/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/popl20-more/parray-copy.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 07:16:37,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 07:16:37,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 07:16:37,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 07:16:37,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 07:16:37,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 07:16:37,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 07:16:37,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 07:16:37,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 07:16:37,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 07:16:37,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 07:16:37,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 07:16:37,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 07:16:37,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 07:16:37,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 07:16:37,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 07:16:37,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 07:16:37,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 07:16:37,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 07:16:37,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 07:16:37,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 07:16:37,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 07:16:37,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 07:16:37,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 07:16:37,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 07:16:37,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 07:16:37,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 07:16:37,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 07:16:37,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 07:16:37,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 07:16:37,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 07:16:37,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 07:16:37,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 07:16:37,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 07:16:37,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 07:16:37,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 07:16:37,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 07:16:37,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 07:16:37,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 07:16:37,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 07:16:37,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 07:16:37,175 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 07:16:37,197 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 07:16:37,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 07:16:37,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 07:16:37,198 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 07:16:37,199 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 07:16:37,199 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 07:16:37,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 07:16:37,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 07:16:37,199 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 07:16:37,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 07:16:37,200 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 07:16:37,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 07:16:37,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 07:16:37,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 07:16:37,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 07:16:37,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 07:16:37,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 07:16:37,200 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 07:16:37,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 07:16:37,200 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 07:16:37,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 07:16:37,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 07:16:37,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 07:16:37,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 07:16:37,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 07:16:37,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 07:16:37,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 07:16:37,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 07:16:37,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 07:16:37,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 07:16:37,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 07:16:37,202 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 07:16:37,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 07:16:37,202 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 07:16:37,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 07:16:37,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 07:16:37,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 07:16:37,385 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 07:16:37,386 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 07:16:37,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/parray-copy.wvr.bpl [2022-01-18 07:16:37,387 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/parray-copy.wvr.bpl' [2022-01-18 07:16:37,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 07:16:37,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 07:16:37,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 07:16:37,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 07:16:37,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 07:16:37,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:16:37" (1/1) ... [2022-01-18 07:16:37,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:16:37" (1/1) ... [2022-01-18 07:16:37,432 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 07:16:37,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 07:16:37,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 07:16:37,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 07:16:37,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 07:16:37,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:16:37" (1/1) ... [2022-01-18 07:16:37,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:16:37" (1/1) ... [2022-01-18 07:16:37,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:16:37" (1/1) ... [2022-01-18 07:16:37,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:16:37" (1/1) ... [2022-01-18 07:16:37,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:16:37" (1/1) ... [2022-01-18 07:16:37,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:16:37" (1/1) ... [2022-01-18 07:16:37,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:16:37" (1/1) ... [2022-01-18 07:16:37,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 07:16:37,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 07:16:37,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 07:16:37,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 07:16:37,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:16:37" (1/1) ... [2022-01-18 07:16:37,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 07:16:37,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:37,464 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 07:16:37,466 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 07:16:37,491 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 07:16:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 07:16:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 07:16:37,491 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 07:16:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 07:16:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 07:16:37,491 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 07:16:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 07:16:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 07:16:37,492 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 07:16:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 07:16:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 07:16:37,493 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 07:16:37,524 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 07:16:37,525 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 07:16:37,583 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 07:16:37,592 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 07:16:37,592 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 07:16:37,594 INFO L202 PluginConnector]: Adding new model parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 07:16:37 BoogieIcfgContainer [2022-01-18 07:16:37,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 07:16:37,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 07:16:37,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 07:16:37,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 07:16:37,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:16:37" (1/2) ... [2022-01-18 07:16:37,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546a508 and model type parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 07:16:37, skipping insertion in model container [2022-01-18 07:16:37,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 07:16:37" (2/2) ... [2022-01-18 07:16:37,615 INFO L111 eAbstractionObserver]: Analyzing ICFG parray-copy.wvr.bpl [2022-01-18 07:16:37,618 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 07:16:37,619 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 07:16:37,619 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 07:16:37,619 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 07:16:37,641 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 07:16:37,667 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 07:16:37,672 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 07:16:37,672 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 07:16:37,678 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 31 transitions, 86 flow [2022-01-18 07:16:37,720 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 114 states, 113 states have (on average 2.7787610619469025) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 113 states have (on average 2.7787610619469025) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:37,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 07:16:37,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:37,732 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] [2022-01-18 07:16:37,733 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:37,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:37,736 INFO L85 PathProgramCache]: Analyzing trace with hash 599746223, now seen corresponding path program 1 times [2022-01-18 07:16:37,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:37,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771667411] [2022-01-18 07:16:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:37,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:37,865 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 07:16:37,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:37,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771667411] [2022-01-18 07:16:37,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771667411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 07:16:37,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 07:16:37,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 07:16:37,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723500227] [2022-01-18 07:16:37,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:16:37,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 07:16:37,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:37,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 07:16:37,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 07:16:37,888 INFO L87 Difference]: Start difference. First operand has 114 states, 113 states have (on average 2.7787610619469025) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 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 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:37,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:37,945 INFO L93 Difference]: Finished difference Result 156 states and 438 transitions. [2022-01-18 07:16:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 07:16:37,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 07:16:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:37,953 INFO L225 Difference]: With dead ends: 156 [2022-01-18 07:16:37,954 INFO L226 Difference]: Without dead ends: 156 [2022-01-18 07:16:37,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 07:16:37,957 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 81 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:37,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 14 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 07:16:37,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-01-18 07:16:38,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 135. [2022-01-18 07:16:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 2.8059701492537314) internal successors, (376), 134 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 376 transitions. [2022-01-18 07:16:38,022 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 376 transitions. Word has length 20 [2022-01-18 07:16:38,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:38,023 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 376 transitions. [2022-01-18 07:16:38,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:38,023 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 376 transitions. [2022-01-18 07:16:38,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-18 07:16:38,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:38,025 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, 1] [2022-01-18 07:16:38,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 07:16:38,025 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:38,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:38,026 INFO L85 PathProgramCache]: Analyzing trace with hash -530635729, now seen corresponding path program 1 times [2022-01-18 07:16:38,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:38,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032096810] [2022-01-18 07:16:38,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:38,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:38,083 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 07:16:38,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:38,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032096810] [2022-01-18 07:16:38,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032096810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 07:16:38,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 07:16:38,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 07:16:38,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278932765] [2022-01-18 07:16:38,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:16:38,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 07:16:38,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:38,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 07:16:38,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 07:16:38,086 INFO L87 Difference]: Start difference. First operand 135 states and 376 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:38,148 INFO L93 Difference]: Finished difference Result 160 states and 450 transitions. [2022-01-18 07:16:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 07:16:38,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-18 07:16:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:38,151 INFO L225 Difference]: With dead ends: 160 [2022-01-18 07:16:38,151 INFO L226 Difference]: Without dead ends: 160 [2022-01-18 07:16:38,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 07:16:38,152 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 43 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:38,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 16 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 07:16:38,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-01-18 07:16:38,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-01-18 07:16:38,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 2.830188679245283) internal successors, (450), 159 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:38,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 450 transitions. [2022-01-18 07:16:38,163 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 450 transitions. Word has length 22 [2022-01-18 07:16:38,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:38,163 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 450 transitions. [2022-01-18 07:16:38,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:38,163 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 450 transitions. [2022-01-18 07:16:38,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:16:38,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:38,164 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, 1, 1, 1] [2022-01-18 07:16:38,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 07:16:38,165 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:38,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:38,165 INFO L85 PathProgramCache]: Analyzing trace with hash 247610633, now seen corresponding path program 1 times [2022-01-18 07:16:38,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:38,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13925654] [2022-01-18 07:16:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:38,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:38,416 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 07:16:38,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:38,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13925654] [2022-01-18 07:16:38,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13925654] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:16:38,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601945698] [2022-01-18 07:16:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:38,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:38,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:38,419 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 07:16:38,420 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 07:16:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:38,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 07:16:38,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:16:38,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:16:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:38,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:16:38,842 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 07:16:38,842 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 12 [2022-01-18 07:16:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:39,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601945698] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:16:39,078 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:16:39,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 24 [2022-01-18 07:16:39,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797041102] [2022-01-18 07:16:39,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:16:39,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:16:39,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:39,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:16:39,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:16:39,080 INFO L87 Difference]: Start difference. First operand 160 states and 450 transitions. Second operand has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 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 07:16:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:39,658 INFO L93 Difference]: Finished difference Result 480 states and 1349 transitions. [2022-01-18 07:16:39,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 07:16:39,659 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 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 24 [2022-01-18 07:16:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:39,661 INFO L225 Difference]: With dead ends: 480 [2022-01-18 07:16:39,661 INFO L226 Difference]: Without dead ends: 312 [2022-01-18 07:16:39,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=262, Invalid=1144, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 07:16:39,662 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 335 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:39,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 121 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:16:39,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-01-18 07:16:39,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 194. [2022-01-18 07:16:39,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.8911917098445596) internal successors, (558), 193 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:39,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 558 transitions. [2022-01-18 07:16:39,693 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 558 transitions. Word has length 24 [2022-01-18 07:16:39,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:39,693 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 558 transitions. [2022-01-18 07:16:39,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 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 07:16:39,693 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 558 transitions. [2022-01-18 07:16:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:16:39,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:39,694 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, 1, 1, 1] [2022-01-18 07:16:39,713 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 07:16:39,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:39,896 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:39,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:39,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1205438725, now seen corresponding path program 2 times [2022-01-18 07:16:39,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:39,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492446398] [2022-01-18 07:16:39,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:39,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:40,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:40,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492446398] [2022-01-18 07:16:40,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492446398] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:16:40,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869038064] [2022-01-18 07:16:40,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:16:40,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:40,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:40,091 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 07:16:40,092 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 07:16:40,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:16:40,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:16:40,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 07:16:40,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:16:40,336 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:16:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:40,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:16:40,480 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 07:16:40,480 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 12 [2022-01-18 07:16:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:40,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869038064] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:16:40,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:16:40,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 24 [2022-01-18 07:16:40,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798364459] [2022-01-18 07:16:40,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:16:40,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:16:40,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:40,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:16:40,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:16:40,691 INFO L87 Difference]: Start difference. First operand 194 states and 558 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:41,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:41,589 INFO L93 Difference]: Finished difference Result 598 states and 1797 transitions. [2022-01-18 07:16:41,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 07:16:41,589 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:16:41,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:41,592 INFO L225 Difference]: With dead ends: 598 [2022-01-18 07:16:41,592 INFO L226 Difference]: Without dead ends: 571 [2022-01-18 07:16:41,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=460, Invalid=1990, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 07:16:41,594 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 307 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:41,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 219 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 477 Invalid, 0 Unknown, 101 Unchecked, 0.2s Time] [2022-01-18 07:16:41,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-01-18 07:16:41,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 287. [2022-01-18 07:16:41,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 2.944055944055944) internal successors, (842), 286 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:41,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 842 transitions. [2022-01-18 07:16:41,605 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 842 transitions. Word has length 24 [2022-01-18 07:16:41,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:41,605 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 842 transitions. [2022-01-18 07:16:41,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:41,605 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 842 transitions. [2022-01-18 07:16:41,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:16:41,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:41,607 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, 1, 1, 1] [2022-01-18 07:16:41,629 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 07:16:41,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-18 07:16:41,827 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:41,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:41,827 INFO L85 PathProgramCache]: Analyzing trace with hash -695052013, now seen corresponding path program 3 times [2022-01-18 07:16:41,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:41,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545333365] [2022-01-18 07:16:41,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:41,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:41,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:41,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:41,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545333365] [2022-01-18 07:16:41,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545333365] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:16:41,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171326031] [2022-01-18 07:16:41,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:16:41,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:41,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:41,993 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 07:16:41,993 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 07:16:42,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:16:42,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:16:42,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 07:16:42,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:16:42,163 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:16:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:42,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:16:42,319 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 07:16:42,319 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 12 [2022-01-18 07:16:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:42,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171326031] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:16:42,490 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:16:42,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 24 [2022-01-18 07:16:42,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573578365] [2022-01-18 07:16:42,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:16:42,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:16:42,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:42,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:16:42,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:16:42,492 INFO L87 Difference]: Start difference. First operand 287 states and 842 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:44,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:44,116 INFO L93 Difference]: Finished difference Result 935 states and 2785 transitions. [2022-01-18 07:16:44,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 07:16:44,116 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:16:44,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:44,120 INFO L225 Difference]: With dead ends: 935 [2022-01-18 07:16:44,120 INFO L226 Difference]: Without dead ends: 832 [2022-01-18 07:16:44,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=817, Invalid=3875, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 07:16:44,122 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 429 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 453 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:44,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 299 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 606 Invalid, 0 Unknown, 453 Unchecked, 0.3s Time] [2022-01-18 07:16:44,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-01-18 07:16:44,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 321. [2022-01-18 07:16:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 3.003125) internal successors, (961), 320 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:44,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 961 transitions. [2022-01-18 07:16:44,141 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 961 transitions. Word has length 24 [2022-01-18 07:16:44,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:44,141 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 961 transitions. [2022-01-18 07:16:44,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:44,141 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 961 transitions. [2022-01-18 07:16:44,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:16:44,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:44,142 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, 1, 1, 1] [2022-01-18 07:16:44,159 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 07:16:44,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:44,343 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:44,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:44,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1991715119, now seen corresponding path program 4 times [2022-01-18 07:16:44,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:44,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118392402] [2022-01-18 07:16:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:44,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:44,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:44,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118392402] [2022-01-18 07:16:44,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118392402] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:16:44,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488310257] [2022-01-18 07:16:44,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:16:44,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:44,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:44,466 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 07:16:44,467 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 07:16:44,498 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:16:44,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:16:44,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 07:16:44,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:16:44,671 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:16:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:44,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:16:44,719 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 07:16:44,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 12 [2022-01-18 07:16:44,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:44,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488310257] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:16:44,886 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:16:44,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-18 07:16:44,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271928638] [2022-01-18 07:16:44,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:16:44,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:16:44,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:44,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:16:44,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:16:44,887 INFO L87 Difference]: Start difference. First operand 321 states and 961 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:45,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:45,404 INFO L93 Difference]: Finished difference Result 517 states and 1513 transitions. [2022-01-18 07:16:45,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 07:16:45,404 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:16:45,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:45,407 INFO L225 Difference]: With dead ends: 517 [2022-01-18 07:16:45,407 INFO L226 Difference]: Without dead ends: 486 [2022-01-18 07:16:45,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=245, Invalid=945, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 07:16:45,408 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 156 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:45,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 228 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:16:45,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-01-18 07:16:45,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 325. [2022-01-18 07:16:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 2.996913580246914) internal successors, (971), 324 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:45,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 971 transitions. [2022-01-18 07:16:45,415 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 971 transitions. Word has length 24 [2022-01-18 07:16:45,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:45,415 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 971 transitions. [2022-01-18 07:16:45,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:45,415 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 971 transitions. [2022-01-18 07:16:45,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:16:45,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:45,416 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, 1, 1, 1] [2022-01-18 07:16:45,437 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 07:16:45,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:45,617 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:45,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:45,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1504212173, now seen corresponding path program 5 times [2022-01-18 07:16:45,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:45,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072050011] [2022-01-18 07:16:45,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:45,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:45,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:45,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072050011] [2022-01-18 07:16:45,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072050011] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:16:45,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698543492] [2022-01-18 07:16:45,744 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:16:45,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:45,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:45,745 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 07:16:45,746 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 07:16:45,774 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:16:45,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:16:45,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 07:16:45,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:16:45,940 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:16:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:45,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:16:46,046 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 07:16:46,046 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 12 [2022-01-18 07:16:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:46,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698543492] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:16:46,205 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:16:46,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-18 07:16:46,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269355759] [2022-01-18 07:16:46,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:16:46,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:16:46,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:46,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:16:46,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:16:46,206 INFO L87 Difference]: Start difference. First operand 325 states and 971 transitions. Second operand has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 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 07:16:46,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:46,888 INFO L93 Difference]: Finished difference Result 556 states and 1609 transitions. [2022-01-18 07:16:46,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 07:16:46,888 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 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 24 [2022-01-18 07:16:46,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:46,890 INFO L225 Difference]: With dead ends: 556 [2022-01-18 07:16:46,890 INFO L226 Difference]: Without dead ends: 510 [2022-01-18 07:16:46,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=266, Invalid=1216, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 07:16:46,891 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 148 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:46,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 265 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 718 Invalid, 0 Unknown, 78 Unchecked, 0.3s Time] [2022-01-18 07:16:46,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-01-18 07:16:46,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 327. [2022-01-18 07:16:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 2.9938650306748467) internal successors, (976), 326 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 976 transitions. [2022-01-18 07:16:46,898 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 976 transitions. Word has length 24 [2022-01-18 07:16:46,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:46,898 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 976 transitions. [2022-01-18 07:16:46,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 25 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 07:16:46,898 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 976 transitions. [2022-01-18 07:16:46,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:16:46,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:46,901 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, 1, 1, 1] [2022-01-18 07:16:46,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 07:16:47,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:47,111 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:47,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:47,112 INFO L85 PathProgramCache]: Analyzing trace with hash 206371921, now seen corresponding path program 6 times [2022-01-18 07:16:47,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:47,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450227429] [2022-01-18 07:16:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:47,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:47,206 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 07:16:47,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:47,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450227429] [2022-01-18 07:16:47,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450227429] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:16:47,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280995183] [2022-01-18 07:16:47,207 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:16:47,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:47,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:47,208 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 07:16:47,209 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 07:16:47,231 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:16:47,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:16:47,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 07:16:47,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:16:47,395 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:16:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:47,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:16:47,531 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 07:16:47,531 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 12 [2022-01-18 07:16:47,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:47,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280995183] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:16:47,674 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:16:47,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 22 [2022-01-18 07:16:47,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446143910] [2022-01-18 07:16:47,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:16:47,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:16:47,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:47,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:16:47,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:16:47,675 INFO L87 Difference]: Start difference. First operand 327 states and 976 transitions. Second operand has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:48,995 INFO L93 Difference]: Finished difference Result 827 states and 2341 transitions. [2022-01-18 07:16:48,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 07:16:48,995 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:16:48,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:48,999 INFO L225 Difference]: With dead ends: 827 [2022-01-18 07:16:48,999 INFO L226 Difference]: Without dead ends: 785 [2022-01-18 07:16:49,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=585, Invalid=2495, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 07:16:49,000 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 287 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 313 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:49,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 313 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 737 Invalid, 0 Unknown, 313 Unchecked, 0.4s Time] [2022-01-18 07:16:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-01-18 07:16:49,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 353. [2022-01-18 07:16:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 3.022727272727273) internal successors, (1064), 352 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:49,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 1064 transitions. [2022-01-18 07:16:49,029 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 1064 transitions. Word has length 24 [2022-01-18 07:16:49,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:49,029 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 1064 transitions. [2022-01-18 07:16:49,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:49,030 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 1064 transitions. [2022-01-18 07:16:49,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:16:49,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:49,031 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:16:49,046 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 07:16:49,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:49,245 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:49,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:49,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1282993899, now seen corresponding path program 7 times [2022-01-18 07:16:49,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:49,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296214716] [2022-01-18 07:16:49,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:49,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:49,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:49,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296214716] [2022-01-18 07:16:49,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296214716] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:16:49,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449787722] [2022-01-18 07:16:49,298 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:16:49,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:49,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:49,310 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 07:16:49,315 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 07:16:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:49,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:16:49,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:16:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:49,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:16:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:49,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449787722] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:16:49,550 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:16:49,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 07:16:49,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611211883] [2022-01-18 07:16:49,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:16:49,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:16:49,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:49,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:16:49,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:16:49,556 INFO L87 Difference]: Start difference. First operand 353 states and 1064 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 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 07:16:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:51,206 INFO L93 Difference]: Finished difference Result 2020 states and 5811 transitions. [2022-01-18 07:16:51,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 07:16:51,206 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 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 26 [2022-01-18 07:16:51,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:51,214 INFO L225 Difference]: With dead ends: 2020 [2022-01-18 07:16:51,214 INFO L226 Difference]: Without dead ends: 2020 [2022-01-18 07:16:51,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4273 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2378, Invalid=8752, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 07:16:51,217 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 434 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:51,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 389 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:16:51,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2022-01-18 07:16:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 426. [2022-01-18 07:16:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 3.2188235294117646) internal successors, (1368), 425 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1368 transitions. [2022-01-18 07:16:51,235 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1368 transitions. Word has length 26 [2022-01-18 07:16:51,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:51,235 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 1368 transitions. [2022-01-18 07:16:51,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 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 07:16:51,235 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1368 transitions. [2022-01-18 07:16:51,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:16:51,236 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:51,236 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:16:51,255 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 07:16:51,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:51,452 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:51,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:51,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1524378449, now seen corresponding path program 8 times [2022-01-18 07:16:51,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:51,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026217458] [2022-01-18 07:16:51,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:51,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:51,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026217458] [2022-01-18 07:16:51,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026217458] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:16:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409980309] [2022-01-18 07:16:51,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:16:51,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:51,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:51,497 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 07:16:51,498 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 07:16:51,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:16:51,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:16:51,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:16:51,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:16:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:51,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:16:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:51,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409980309] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:16:51,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:16:51,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 07:16:51,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481938679] [2022-01-18 07:16:51,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:16:51,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:16:51,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:51,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:16:51,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:16:51,681 INFO L87 Difference]: Start difference. First operand 426 states and 1368 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:52,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:52,354 INFO L93 Difference]: Finished difference Result 1467 states and 4213 transitions. [2022-01-18 07:16:52,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 07:16:52,354 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:16:52,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:52,359 INFO L225 Difference]: With dead ends: 1467 [2022-01-18 07:16:52,359 INFO L226 Difference]: Without dead ends: 1467 [2022-01-18 07:16:52,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=714, Invalid=2148, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 07:16:52,360 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 344 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:52,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 186 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:16:52,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2022-01-18 07:16:52,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 438. [2022-01-18 07:16:52,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 3.2128146453089244) internal successors, (1404), 437 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1404 transitions. [2022-01-18 07:16:52,373 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1404 transitions. Word has length 26 [2022-01-18 07:16:52,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:52,373 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 1404 transitions. [2022-01-18 07:16:52,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:52,373 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1404 transitions. [2022-01-18 07:16:52,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:16:52,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:52,374 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:16:52,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 07:16:52,587 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,SelfDestructingSolverStorable9 [2022-01-18 07:16:52,588 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:52,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:52,588 INFO L85 PathProgramCache]: Analyzing trace with hash 673708591, now seen corresponding path program 9 times [2022-01-18 07:16:52,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:52,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205472388] [2022-01-18 07:16:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:52,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:52,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:52,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205472388] [2022-01-18 07:16:52,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205472388] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:16:52,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5738942] [2022-01-18 07:16:52,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:16:52,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:52,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:52,627 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 07:16:52,628 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 07:16:52,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:16:52,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:16:52,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:16:52,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:16:52,810 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:16:52,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:16:52,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:16:53,042 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 07:16:53,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 12 [2022-01-18 07:16:53,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:16:53,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5738942] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:16:53,216 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:16:53,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 27 [2022-01-18 07:16:53,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006638004] [2022-01-18 07:16:53,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:16:53,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 07:16:53,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:53,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 07:16:53,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:16:53,217 INFO L87 Difference]: Start difference. First operand 438 states and 1404 transitions. Second operand has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 27 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:54,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:54,565 INFO L93 Difference]: Finished difference Result 1576 states and 4704 transitions. [2022-01-18 07:16:54,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 07:16:54,566 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 27 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have 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 07:16:54,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:54,571 INFO L225 Difference]: With dead ends: 1576 [2022-01-18 07:16:54,571 INFO L226 Difference]: Without dead ends: 1576 [2022-01-18 07:16:54,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2258 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1436, Invalid=5704, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 07:16:54,573 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 550 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 513 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:54,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 418 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 871 Invalid, 0 Unknown, 513 Unchecked, 0.4s Time] [2022-01-18 07:16:54,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2022-01-18 07:16:54,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 431. [2022-01-18 07:16:54,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 3.2093023255813953) internal successors, (1380), 430 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:54,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1380 transitions. [2022-01-18 07:16:54,587 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1380 transitions. Word has length 26 [2022-01-18 07:16:54,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:54,587 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 1380 transitions. [2022-01-18 07:16:54,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 27 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:54,587 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1380 transitions. [2022-01-18 07:16:54,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:16:54,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:54,588 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:16:54,607 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 07:16:54,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:54,804 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:54,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:54,804 INFO L85 PathProgramCache]: Analyzing trace with hash -48760871, now seen corresponding path program 10 times [2022-01-18 07:16:54,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:54,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210666742] [2022-01-18 07:16:54,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:54,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:54,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:54,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:54,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210666742] [2022-01-18 07:16:54,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210666742] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:16:54,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583500390] [2022-01-18 07:16:54,841 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:16:54,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:54,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:54,842 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 07:16:54,842 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 07:16:54,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:16:54,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:16:54,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:16:54,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:16:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:54,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:16:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:55,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583500390] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:16:55,019 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:16:55,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 07:16:55,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023831037] [2022-01-18 07:16:55,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:16:55,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:16:55,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:55,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:16:55,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:16:55,021 INFO L87 Difference]: Start difference. First operand 431 states and 1380 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:55,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:55,451 INFO L93 Difference]: Finished difference Result 1470 states and 4175 transitions. [2022-01-18 07:16:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 07:16:55,451 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:16:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:55,456 INFO L225 Difference]: With dead ends: 1470 [2022-01-18 07:16:55,456 INFO L226 Difference]: Without dead ends: 1470 [2022-01-18 07:16:55,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 07:16:55,457 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 276 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:55,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 174 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:16:55,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2022-01-18 07:16:55,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 443. [2022-01-18 07:16:55,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 3.2036199095022626) internal successors, (1416), 442 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1416 transitions. [2022-01-18 07:16:55,470 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1416 transitions. Word has length 26 [2022-01-18 07:16:55,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:55,470 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 1416 transitions. [2022-01-18 07:16:55,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:55,471 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1416 transitions. [2022-01-18 07:16:55,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:16:55,472 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:55,472 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:16:55,489 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 07:16:55,675 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,SelfDestructingSolverStorable11 [2022-01-18 07:16:55,675 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:55,676 INFO L85 PathProgramCache]: Analyzing trace with hash 483145443, now seen corresponding path program 11 times [2022-01-18 07:16:55,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:55,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655316081] [2022-01-18 07:16:55,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:55,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:55,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:55,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:55,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655316081] [2022-01-18 07:16:55,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655316081] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:16:55,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947061155] [2022-01-18 07:16:55,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:16:55,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:55,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:55,715 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 07:16:55,720 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 07:16:55,740 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:16:55,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:16:55,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:16:55,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:16:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:55,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:16:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:55,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947061155] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:16:55,875 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:16:55,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 07:16:55,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159035044] [2022-01-18 07:16:55,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:16:55,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:16:55,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:55,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:16:55,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:16:55,876 INFO L87 Difference]: Start difference. First operand 443 states and 1416 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:56,320 INFO L93 Difference]: Finished difference Result 1271 states and 3742 transitions. [2022-01-18 07:16:56,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 07:16:56,320 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:16:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:56,325 INFO L225 Difference]: With dead ends: 1271 [2022-01-18 07:16:56,325 INFO L226 Difference]: Without dead ends: 1267 [2022-01-18 07:16:56,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 07:16:56,326 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 283 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:56,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 164 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:16:56,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-01-18 07:16:56,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 491. [2022-01-18 07:16:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 490 states have (on average 3.1714285714285713) internal successors, (1554), 490 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 1554 transitions. [2022-01-18 07:16:56,337 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 1554 transitions. Word has length 26 [2022-01-18 07:16:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:56,338 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 1554 transitions. [2022-01-18 07:16:56,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:56,338 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 1554 transitions. [2022-01-18 07:16:56,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:16:56,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:56,339 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:16:56,355 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 07:16:56,554 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,SelfDestructingSolverStorable12 [2022-01-18 07:16:56,554 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:56,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1461702887, now seen corresponding path program 12 times [2022-01-18 07:16:56,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:56,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254598891] [2022-01-18 07:16:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:56,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:56,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:56,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:56,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254598891] [2022-01-18 07:16:56,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254598891] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:16:56,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595226473] [2022-01-18 07:16:56,588 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:16:56,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:56,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:56,589 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 07:16:56,590 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 07:16:56,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:16:56,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:16:56,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:16:56,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:16:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:56,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:16:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:56,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595226473] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:16:56,748 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:16:56,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 07:16:56,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42237401] [2022-01-18 07:16:56,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:16:56,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:16:56,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:56,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:16:56,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:16:56,749 INFO L87 Difference]: Start difference. First operand 491 states and 1554 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:57,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:57,278 INFO L93 Difference]: Finished difference Result 1396 states and 4042 transitions. [2022-01-18 07:16:57,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 07:16:57,278 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:16:57,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:57,283 INFO L225 Difference]: With dead ends: 1396 [2022-01-18 07:16:57,283 INFO L226 Difference]: Without dead ends: 1396 [2022-01-18 07:16:57,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=584, Invalid=2068, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 07:16:57,284 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 269 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:57,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 197 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:16:57,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2022-01-18 07:16:57,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 485. [2022-01-18 07:16:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 3.1714876033057853) internal successors, (1535), 484 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:57,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1535 transitions. [2022-01-18 07:16:57,296 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1535 transitions. Word has length 26 [2022-01-18 07:16:57,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:57,296 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 1535 transitions. [2022-01-18 07:16:57,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:57,296 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1535 transitions. [2022-01-18 07:16:57,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:16:57,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:57,297 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:16:57,312 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 07:16:57,512 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,SelfDestructingSolverStorable13 [2022-01-18 07:16:57,512 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:57,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1976268135, now seen corresponding path program 13 times [2022-01-18 07:16:57,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:57,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764687528] [2022-01-18 07:16:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:57,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:57,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:57,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764687528] [2022-01-18 07:16:57,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764687528] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:16:57,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684924089] [2022-01-18 07:16:57,552 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:16:57,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:57,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:57,553 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 07:16:57,554 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 07:16:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:57,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:16:57,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:16:57,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:57,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:16:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:57,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684924089] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:16:57,746 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:16:57,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 07:16:57,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498210936] [2022-01-18 07:16:57,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:16:57,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:16:57,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:57,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:16:57,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:16:57,748 INFO L87 Difference]: Start difference. First operand 485 states and 1535 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:58,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:58,544 INFO L93 Difference]: Finished difference Result 2177 states and 6037 transitions. [2022-01-18 07:16:58,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 07:16:58,544 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:16:58,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:58,551 INFO L225 Difference]: With dead ends: 2177 [2022-01-18 07:16:58,551 INFO L226 Difference]: Without dead ends: 2177 [2022-01-18 07:16:58,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1571 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1091, Invalid=3199, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 07:16:58,553 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 427 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:58,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 306 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:16:58,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2022-01-18 07:16:58,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 509. [2022-01-18 07:16:58,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 3.22244094488189) internal successors, (1637), 508 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:58,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 1637 transitions. [2022-01-18 07:16:58,570 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 1637 transitions. Word has length 26 [2022-01-18 07:16:58,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:58,570 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 1637 transitions. [2022-01-18 07:16:58,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:58,570 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 1637 transitions. [2022-01-18 07:16:58,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:16:58,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:58,571 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, 1, 1, 1, 1, 1] [2022-01-18 07:16:58,586 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 07:16:58,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 07:16:58,786 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:58,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:58,787 INFO L85 PathProgramCache]: Analyzing trace with hash 845077903, now seen corresponding path program 1 times [2022-01-18 07:16:58,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:58,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803365507] [2022-01-18 07:16:58,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:58,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:16:58,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:58,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803365507] [2022-01-18 07:16:58,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803365507] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:16:58,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618801821] [2022-01-18 07:16:58,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:58,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:58,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:58,813 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 07:16:58,814 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 07:16:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:58,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 07:16:58,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:16:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:16:58,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:16:58,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:16:58,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618801821] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:16:58,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:16:58,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-01-18 07:16:58,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297433738] [2022-01-18 07:16:58,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:16:58,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 07:16:58,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:58,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 07:16:58,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-18 07:16:58,955 INFO L87 Difference]: Start difference. First operand 509 states and 1637 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:59,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:59,053 INFO L93 Difference]: Finished difference Result 734 states and 2247 transitions. [2022-01-18 07:16:59,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 07:16:59,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:16:59,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:59,056 INFO L225 Difference]: With dead ends: 734 [2022-01-18 07:16:59,056 INFO L226 Difference]: Without dead ends: 734 [2022-01-18 07:16:59,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:16:59,057 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 99 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:59,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 52 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:16:59,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-01-18 07:16:59,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 529. [2022-01-18 07:16:59,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 3.234848484848485) internal successors, (1708), 528 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 1708 transitions. [2022-01-18 07:16:59,065 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 1708 transitions. Word has length 26 [2022-01-18 07:16:59,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:59,066 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 1708 transitions. [2022-01-18 07:16:59,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:59,066 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 1708 transitions. [2022-01-18 07:16:59,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:16:59,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:59,067 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:16:59,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 07:16:59,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:59,284 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:16:59,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:16:59,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1808051533, now seen corresponding path program 14 times [2022-01-18 07:16:59,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:16:59,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890604617] [2022-01-18 07:16:59,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:16:59,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:16:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:16:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:59,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:16:59,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890604617] [2022-01-18 07:16:59,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890604617] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:16:59,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264584427] [2022-01-18 07:16:59,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:16:59,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:16:59,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:16:59,317 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 07:16:59,318 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 07:16:59,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:16:59,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:16:59,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:16:59,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:16:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:59,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:16:59,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:16:59,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264584427] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:16:59,449 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:16:59,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-01-18 07:16:59,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357397319] [2022-01-18 07:16:59,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:16:59,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 07:16:59,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:16:59,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 07:16:59,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:16:59,450 INFO L87 Difference]: Start difference. First operand 529 states and 1708 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:59,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:16:59,759 INFO L93 Difference]: Finished difference Result 1299 states and 3870 transitions. [2022-01-18 07:16:59,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 07:16:59,760 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:16:59,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:16:59,763 INFO L225 Difference]: With dead ends: 1299 [2022-01-18 07:16:59,763 INFO L226 Difference]: Without dead ends: 1299 [2022-01-18 07:16:59,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 07:16:59,764 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 190 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:16:59,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 160 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:16:59,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2022-01-18 07:16:59,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 559. [2022-01-18 07:16:59,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 558 states have (on average 3.227598566308244) internal successors, (1801), 558 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1801 transitions. [2022-01-18 07:16:59,774 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1801 transitions. Word has length 26 [2022-01-18 07:16:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:16:59,775 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 1801 transitions. [2022-01-18 07:16:59,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:16:59,775 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1801 transitions. [2022-01-18 07:16:59,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:16:59,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:16:59,776 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:16:59,802 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 07:17:00,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 07:17:00,001 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:00,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:00,001 INFO L85 PathProgramCache]: Analyzing trace with hash -957947885, now seen corresponding path program 15 times [2022-01-18 07:17:00,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:00,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443028912] [2022-01-18 07:17:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:00,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:00,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:00,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443028912] [2022-01-18 07:17:00,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443028912] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:00,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706315129] [2022-01-18 07:17:00,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:17:00,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:00,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:00,043 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 07:17:00,043 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 07:17:00,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:17:00,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:00,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:17:00,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:00,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:00,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:00,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706315129] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:00,244 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:00,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 07:17:00,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476984178] [2022-01-18 07:17:00,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:00,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:17:00,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:00,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:17:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:17:00,245 INFO L87 Difference]: Start difference. First operand 559 states and 1801 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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 07:17:00,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:00,828 INFO L93 Difference]: Finished difference Result 2205 states and 6353 transitions. [2022-01-18 07:17:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 07:17:00,828 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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 26 [2022-01-18 07:17:00,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:00,833 INFO L225 Difference]: With dead ends: 2205 [2022-01-18 07:17:00,834 INFO L226 Difference]: Without dead ends: 2205 [2022-01-18 07:17:00,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=678, Invalid=1772, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 07:17:00,835 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 472 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:00,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 247 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:17:00,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2022-01-18 07:17:00,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 652. [2022-01-18 07:17:00,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 3.3179723502304146) internal successors, (2160), 651 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:00,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2160 transitions. [2022-01-18 07:17:00,864 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2160 transitions. Word has length 26 [2022-01-18 07:17:00,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:00,864 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 2160 transitions. [2022-01-18 07:17:00,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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 07:17:00,864 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2160 transitions. [2022-01-18 07:17:00,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:17:00,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:00,866 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, 1, 1, 1, 1, 1] [2022-01-18 07:17:00,881 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 07:17:01,079 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,SelfDestructingSolverStorable17 [2022-01-18 07:17:01,079 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:01,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:01,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2007423219, now seen corresponding path program 2 times [2022-01-18 07:17:01,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:01,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136022400] [2022-01-18 07:17:01,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:01,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:17:01,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:01,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136022400] [2022-01-18 07:17:01,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136022400] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:01,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040318515] [2022-01-18 07:17:01,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:17:01,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:01,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:01,105 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 07:17:01,106 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 07:17:01,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:17:01,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:01,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 07:17:01,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:17:01,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:17:01,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040318515] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:01,288 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:01,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-01-18 07:17:01,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520353017] [2022-01-18 07:17:01,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:01,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 07:17:01,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:01,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 07:17:01,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-18 07:17:01,290 INFO L87 Difference]: Start difference. First operand 652 states and 2160 transitions. Second operand has 10 states, 10 states have (on average 5.4) 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 07:17:01,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:01,411 INFO L93 Difference]: Finished difference Result 1170 states and 3661 transitions. [2022-01-18 07:17:01,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 07:17:01,411 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) 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 26 [2022-01-18 07:17:01,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:01,414 INFO L225 Difference]: With dead ends: 1170 [2022-01-18 07:17:01,414 INFO L226 Difference]: Without dead ends: 1146 [2022-01-18 07:17:01,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=143, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:17:01,414 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 167 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:01,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 58 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:17:01,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-01-18 07:17:01,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 757. [2022-01-18 07:17:01,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 756 states have (on average 3.3465608465608465) internal successors, (2530), 756 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:01,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 2530 transitions. [2022-01-18 07:17:01,427 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 2530 transitions. Word has length 26 [2022-01-18 07:17:01,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:01,427 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 2530 transitions. [2022-01-18 07:17:01,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) 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 07:17:01,428 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 2530 transitions. [2022-01-18 07:17:01,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:17:01,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:01,429 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:01,444 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 07:17:01,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:01,645 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:01,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:01,645 INFO L85 PathProgramCache]: Analyzing trace with hash -370202563, now seen corresponding path program 16 times [2022-01-18 07:17:01,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:01,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125060031] [2022-01-18 07:17:01,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:01,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:01,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:01,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:01,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125060031] [2022-01-18 07:17:01,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125060031] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:01,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927900760] [2022-01-18 07:17:01,685 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:17:01,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:01,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:01,686 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 07:17:01,688 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 07:17:01,708 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:17:01,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:01,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:17:01,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:01,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:01,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927900760] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:01,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:01,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 07:17:01,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860479849] [2022-01-18 07:17:01,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:01,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:17:01,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:01,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:17:01,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:17:01,879 INFO L87 Difference]: Start difference. First operand 757 states and 2530 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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 07:17:02,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:02,638 INFO L93 Difference]: Finished difference Result 2137 states and 6442 transitions. [2022-01-18 07:17:02,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 07:17:02,639 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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 26 [2022-01-18 07:17:02,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:02,642 INFO L225 Difference]: With dead ends: 2137 [2022-01-18 07:17:02,642 INFO L226 Difference]: Without dead ends: 2129 [2022-01-18 07:17:02,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1213 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=880, Invalid=2780, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 07:17:02,644 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 312 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:02,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 223 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:17:02,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2022-01-18 07:17:02,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 804. [2022-01-18 07:17:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 3.415940224159402) internal successors, (2743), 803 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:02,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 2743 transitions. [2022-01-18 07:17:02,663 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 2743 transitions. Word has length 26 [2022-01-18 07:17:02,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:02,664 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 2743 transitions. [2022-01-18 07:17:02,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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 07:17:02,664 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 2743 transitions. [2022-01-18 07:17:02,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:17:02,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:02,666 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:02,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-01-18 07:17:02,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:02,872 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:02,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1473534255, now seen corresponding path program 17 times [2022-01-18 07:17:02,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:02,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888457560] [2022-01-18 07:17:02,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:02,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:02,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:02,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888457560] [2022-01-18 07:17:02,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888457560] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:02,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772612626] [2022-01-18 07:17:02,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:17:02,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:02,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:02,921 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 07:17:02,935 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 07:17:02,947 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:17:02,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:02,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:17:02,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:03,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:17:03,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772612626] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:03,109 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:03,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 07:17:03,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221800186] [2022-01-18 07:17:03,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:03,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:17:03,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:03,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:17:03,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:17:03,113 INFO L87 Difference]: Start difference. First operand 804 states and 2743 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:03,787 INFO L93 Difference]: Finished difference Result 2884 states and 8879 transitions. [2022-01-18 07:17:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 07:17:03,788 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:17:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:03,793 INFO L225 Difference]: With dead ends: 2884 [2022-01-18 07:17:03,793 INFO L226 Difference]: Without dead ends: 2884 [2022-01-18 07:17:03,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=860, Invalid=2220, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 07:17:03,794 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 362 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:03,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 223 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:17:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2022-01-18 07:17:03,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 926. [2022-01-18 07:17:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 3.5945945945945947) internal successors, (3325), 925 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 3325 transitions. [2022-01-18 07:17:03,820 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 3325 transitions. Word has length 26 [2022-01-18 07:17:03,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:03,820 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 3325 transitions. [2022-01-18 07:17:03,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:03,820 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 3325 transitions. [2022-01-18 07:17:03,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:17:03,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:03,821 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:03,839 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 07:17:04,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:04,035 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:04,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:04,036 INFO L85 PathProgramCache]: Analyzing trace with hash 465961067, now seen corresponding path program 18 times [2022-01-18 07:17:04,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:04,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411335393] [2022-01-18 07:17:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:04,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:04,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:04,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:04,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411335393] [2022-01-18 07:17:04,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411335393] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:04,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853586668] [2022-01-18 07:17:04,069 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:17:04,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:04,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:04,070 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 07:17:04,071 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 07:17:04,094 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:17:04,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:04,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:17:04,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:04,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:04,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:17:04,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853586668] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:04,266 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:04,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 07:17:04,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638588660] [2022-01-18 07:17:04,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:04,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:17:04,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:04,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:17:04,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:17:04,267 INFO L87 Difference]: Start difference. First operand 926 states and 3325 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 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 07:17:05,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:05,032 INFO L93 Difference]: Finished difference Result 3162 states and 9670 transitions. [2022-01-18 07:17:05,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 07:17:05,032 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 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 26 [2022-01-18 07:17:05,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:05,040 INFO L225 Difference]: With dead ends: 3162 [2022-01-18 07:17:05,040 INFO L226 Difference]: Without dead ends: 3162 [2022-01-18 07:17:05,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=926, Invalid=2734, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 07:17:05,041 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 412 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:05,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 241 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:17:05,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2022-01-18 07:17:05,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 923. [2022-01-18 07:17:05,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 922 states have (on average 3.5911062906724514) internal successors, (3311), 922 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 3311 transitions. [2022-01-18 07:17:05,070 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 3311 transitions. Word has length 26 [2022-01-18 07:17:05,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:05,070 INFO L470 AbstractCegarLoop]: Abstraction has 923 states and 3311 transitions. [2022-01-18 07:17:05,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 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 07:17:05,070 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 3311 transitions. [2022-01-18 07:17:05,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:17:05,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:05,072 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:05,095 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 07:17:05,287 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,SelfDestructingSolverStorable21 [2022-01-18 07:17:05,287 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:05,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:05,288 INFO L85 PathProgramCache]: Analyzing trace with hash -654035971, now seen corresponding path program 19 times [2022-01-18 07:17:05,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:05,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860618480] [2022-01-18 07:17:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:05,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:05,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:05,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860618480] [2022-01-18 07:17:05,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860618480] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:05,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166911410] [2022-01-18 07:17:05,326 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:17:05,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:05,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:05,336 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 07:17:05,337 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 07:17:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:05,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:17:05,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:05,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:05,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166911410] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:05,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:05,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2022-01-18 07:17:05,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872359003] [2022-01-18 07:17:05,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:05,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:17:05,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:05,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:17:05,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:17:05,508 INFO L87 Difference]: Start difference. First operand 923 states and 3311 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:06,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:06,059 INFO L93 Difference]: Finished difference Result 2838 states and 8728 transitions. [2022-01-18 07:17:06,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 07:17:06,059 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:17:06,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:06,065 INFO L225 Difference]: With dead ends: 2838 [2022-01-18 07:17:06,065 INFO L226 Difference]: Without dead ends: 2834 [2022-01-18 07:17:06,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=514, Invalid=1466, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 07:17:06,066 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 327 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:06,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 198 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:17:06,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2022-01-18 07:17:06,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 929. [2022-01-18 07:17:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 3.5905172413793105) internal successors, (3332), 928 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 3332 transitions. [2022-01-18 07:17:06,121 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 3332 transitions. Word has length 26 [2022-01-18 07:17:06,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:06,122 INFO L470 AbstractCegarLoop]: Abstraction has 929 states and 3332 transitions. [2022-01-18 07:17:06,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:06,122 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 3332 transitions. [2022-01-18 07:17:06,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:17:06,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:06,125 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:06,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 07:17:06,335 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,SelfDestructingSolverStorable22 [2022-01-18 07:17:06,335 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:06,336 INFO L85 PathProgramCache]: Analyzing trace with hash -383526279, now seen corresponding path program 20 times [2022-01-18 07:17:06,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:06,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934074839] [2022-01-18 07:17:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:06,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:06,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:06,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934074839] [2022-01-18 07:17:06,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934074839] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:06,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641228058] [2022-01-18 07:17:06,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:17:06,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:06,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:06,369 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 07:17:06,370 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 07:17:06,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:17:06,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:06,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:17:06,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:06,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:06,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:06,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641228058] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:06,532 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:06,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2022-01-18 07:17:06,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636072403] [2022-01-18 07:17:06,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:06,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:17:06,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:06,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:17:06,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:17:06,533 INFO L87 Difference]: Start difference. First operand 929 states and 3332 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:07,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:07,118 INFO L93 Difference]: Finished difference Result 3029 states and 9169 transitions. [2022-01-18 07:17:07,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 07:17:07,118 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:17:07,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:07,125 INFO L225 Difference]: With dead ends: 3029 [2022-01-18 07:17:07,125 INFO L226 Difference]: Without dead ends: 3029 [2022-01-18 07:17:07,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=666, Invalid=1986, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 07:17:07,126 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 440 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:07,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 223 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:17:07,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2022-01-18 07:17:07,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 925. [2022-01-18 07:17:07,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 924 states have (on average 3.593073593073593) internal successors, (3320), 924 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:07,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 3320 transitions. [2022-01-18 07:17:07,160 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 3320 transitions. Word has length 26 [2022-01-18 07:17:07,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:07,160 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 3320 transitions. [2022-01-18 07:17:07,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:07,161 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 3320 transitions. [2022-01-18 07:17:07,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:17:07,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:07,162 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:07,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 07:17:07,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:07,369 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:07,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:07,369 INFO L85 PathProgramCache]: Analyzing trace with hash 201501907, now seen corresponding path program 21 times [2022-01-18 07:17:07,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:07,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631551106] [2022-01-18 07:17:07,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:07,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:07,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:07,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631551106] [2022-01-18 07:17:07,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631551106] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:07,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158740576] [2022-01-18 07:17:07,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:17:07,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:07,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:07,410 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 07:17:07,411 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 07:17:07,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:17:07,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:07,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:17:07,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:07,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:07,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158740576] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:07,567 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:07,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 07:17:07,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126677029] [2022-01-18 07:17:07,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:07,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:17:07,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:07,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:17:07,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:17:07,568 INFO L87 Difference]: Start difference. First operand 925 states and 3320 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:08,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:08,112 INFO L93 Difference]: Finished difference Result 2778 states and 8527 transitions. [2022-01-18 07:17:08,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 07:17:08,113 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:17:08,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:08,118 INFO L225 Difference]: With dead ends: 2778 [2022-01-18 07:17:08,118 INFO L226 Difference]: Without dead ends: 2766 [2022-01-18 07:17:08,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=508, Invalid=1748, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 07:17:08,119 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 274 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:08,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 206 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:17:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2022-01-18 07:17:08,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 943. [2022-01-18 07:17:08,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 942 states have (on average 3.58067940552017) internal successors, (3373), 942 states have internal predecessors, (3373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 3373 transitions. [2022-01-18 07:17:08,142 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 3373 transitions. Word has length 26 [2022-01-18 07:17:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:08,142 INFO L470 AbstractCegarLoop]: Abstraction has 943 states and 3373 transitions. [2022-01-18 07:17:08,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:08,143 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 3373 transitions. [2022-01-18 07:17:08,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:17:08,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:08,144 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:08,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 07:17:08,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:08,362 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:08,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:08,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1290502825, now seen corresponding path program 22 times [2022-01-18 07:17:08,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:08,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719363539] [2022-01-18 07:17:08,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:08,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:08,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:08,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719363539] [2022-01-18 07:17:08,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719363539] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:08,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883212608] [2022-01-18 07:17:08,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:17:08,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:08,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:08,394 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 07:17:08,395 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 07:17:08,419 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:17:08,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:08,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:17:08,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:08,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:08,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:08,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:08,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883212608] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:08,551 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:08,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 07:17:08,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313984997] [2022-01-18 07:17:08,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:08,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:17:08,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:08,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:17:08,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:17:08,552 INFO L87 Difference]: Start difference. First operand 943 states and 3373 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:09,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:09,008 INFO L93 Difference]: Finished difference Result 2518 states and 7974 transitions. [2022-01-18 07:17:09,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 07:17:09,009 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:17:09,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:09,013 INFO L225 Difference]: With dead ends: 2518 [2022-01-18 07:17:09,013 INFO L226 Difference]: Without dead ends: 2514 [2022-01-18 07:17:09,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=457, Invalid=1435, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 07:17:09,014 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 309 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:09,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 147 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:17:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2022-01-18 07:17:09,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 993. [2022-01-18 07:17:09,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 3.5524193548387095) internal successors, (3524), 992 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:09,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 3524 transitions. [2022-01-18 07:17:09,037 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 3524 transitions. Word has length 26 [2022-01-18 07:17:09,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:09,037 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 3524 transitions. [2022-01-18 07:17:09,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:09,037 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 3524 transitions. [2022-01-18 07:17:09,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:17:09,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:09,038 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:09,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-01-18 07:17:09,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 07:17:09,239 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:09,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:09,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1019993133, now seen corresponding path program 23 times [2022-01-18 07:17:09,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:09,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717763891] [2022-01-18 07:17:09,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:09,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:09,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:09,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717763891] [2022-01-18 07:17:09,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717763891] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:09,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938853899] [2022-01-18 07:17:09,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:17:09,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:09,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:09,276 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 07:17:09,276 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 07:17:09,300 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:17:09,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:09,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:17:09,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:09,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:09,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938853899] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:09,424 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:09,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 07:17:09,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374706662] [2022-01-18 07:17:09,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:09,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:17:09,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:17:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:17:09,424 INFO L87 Difference]: Start difference. First operand 993 states and 3524 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:09,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:09,975 INFO L93 Difference]: Finished difference Result 2664 states and 8331 transitions. [2022-01-18 07:17:09,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 07:17:09,975 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:17:09,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:09,981 INFO L225 Difference]: With dead ends: 2664 [2022-01-18 07:17:09,981 INFO L226 Difference]: Without dead ends: 2664 [2022-01-18 07:17:09,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=699, Invalid=2271, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 07:17:09,982 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 297 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:09,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 164 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:17:09,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-01-18 07:17:10,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 983. [2022-01-18 07:17:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 982 states have (on average 3.5570264765784114) internal successors, (3493), 982 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 3493 transitions. [2022-01-18 07:17:10,007 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 3493 transitions. Word has length 26 [2022-01-18 07:17:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:10,007 INFO L470 AbstractCegarLoop]: Abstraction has 983 states and 3493 transitions. [2022-01-18 07:17:10,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:10,007 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 3493 transitions. [2022-01-18 07:17:10,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:17:10,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:10,009 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:10,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 07:17:10,222 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,SelfDestructingSolverStorable26 [2022-01-18 07:17:10,223 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:10,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:10,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1735381837, now seen corresponding path program 24 times [2022-01-18 07:17:10,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:10,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051985928] [2022-01-18 07:17:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:10,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:10,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:10,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051985928] [2022-01-18 07:17:10,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051985928] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:10,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433190110] [2022-01-18 07:17:10,260 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:17:10,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:10,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:10,261 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 07:17:10,261 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 07:17:10,285 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:17:10,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:10,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:17:10,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:10,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:10,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:10,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433190110] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:10,439 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:10,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 07:17:10,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949970345] [2022-01-18 07:17:10,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:10,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:17:10,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:10,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:17:10,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:17:10,440 INFO L87 Difference]: Start difference. First operand 983 states and 3493 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:10,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:10,973 INFO L93 Difference]: Finished difference Result 2141 states and 6857 transitions. [2022-01-18 07:17:10,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 07:17:10,979 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:17:10,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:10,983 INFO L225 Difference]: With dead ends: 2141 [2022-01-18 07:17:10,983 INFO L226 Difference]: Without dead ends: 2133 [2022-01-18 07:17:10,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=558, Invalid=1794, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 07:17:10,984 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 263 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:10,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 178 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:17:10,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2022-01-18 07:17:11,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 984. [2022-01-18 07:17:11,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 983 states have (on average 3.5595116988809767) internal successors, (3499), 983 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 3499 transitions. [2022-01-18 07:17:11,003 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 3499 transitions. Word has length 26 [2022-01-18 07:17:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:11,003 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 3499 transitions. [2022-01-18 07:17:11,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:11,003 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 3499 transitions. [2022-01-18 07:17:11,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:17:11,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:11,005 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:11,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 07:17:11,211 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,SelfDestructingSolverStorable27 [2022-01-18 07:17:11,211 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:11,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:11,211 INFO L85 PathProgramCache]: Analyzing trace with hash -619306999, now seen corresponding path program 3 times [2022-01-18 07:17:11,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:11,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301703776] [2022-01-18 07:17:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:11,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:11,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:11,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301703776] [2022-01-18 07:17:11,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301703776] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:11,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402143960] [2022-01-18 07:17:11,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:17:11,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:11,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:11,448 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 07:17:11,449 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 07:17:11,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 07:17:11,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:11,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 07:17:11,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:11,603 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:17:11,706 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:17:11,707 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:17:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 07:17:11,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:11,923 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:17:11,924 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:17:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 07:17:12,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402143960] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:12,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:12,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 27 [2022-01-18 07:17:12,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382435930] [2022-01-18 07:17:12,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:12,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 07:17:12,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:12,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 07:17:12,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:17:12,099 INFO L87 Difference]: Start difference. First operand 984 states and 3499 transitions. Second operand has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 27 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:13,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:13,368 INFO L93 Difference]: Finished difference Result 2741 states and 8807 transitions. [2022-01-18 07:17:13,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 07:17:13,368 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 27 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:17:13,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:13,373 INFO L225 Difference]: With dead ends: 2741 [2022-01-18 07:17:13,374 INFO L226 Difference]: Without dead ends: 2584 [2022-01-18 07:17:13,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1498 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=821, Invalid=4149, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 07:17:13,378 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 560 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 495 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:13,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 367 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 722 Invalid, 0 Unknown, 495 Unchecked, 0.3s Time] [2022-01-18 07:17:13,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2022-01-18 07:17:13,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1171. [2022-01-18 07:17:13,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 3.4752136752136753) internal successors, (4066), 1170 states have internal predecessors, (4066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 4066 transitions. [2022-01-18 07:17:13,403 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 4066 transitions. Word has length 28 [2022-01-18 07:17:13,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:13,403 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 4066 transitions. [2022-01-18 07:17:13,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 27 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:13,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 4066 transitions. [2022-01-18 07:17:13,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:17:13,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:13,405 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:13,423 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 07:17:13,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 07:17:13,611 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:13,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:13,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1096873097, now seen corresponding path program 4 times [2022-01-18 07:17:13,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:13,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201215619] [2022-01-18 07:17:13,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:13,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:13,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:13,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201215619] [2022-01-18 07:17:13,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201215619] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:13,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372385996] [2022-01-18 07:17:13,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:17:13,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:13,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:13,870 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 07:17:13,871 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 07:17:13,895 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:17:13,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:13,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 07:17:13,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:14,127 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:17:14,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:17:14,190 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:17:14,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:14,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:14,305 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:17:14,306 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:17:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:14,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372385996] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:14,605 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:14,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-01-18 07:17:14,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581992956] [2022-01-18 07:17:14,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:14,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 07:17:14,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:14,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 07:17:14,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2022-01-18 07:17:14,606 INFO L87 Difference]: Start difference. First operand 1171 states and 4066 transitions. Second operand has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:16,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:16,128 INFO L93 Difference]: Finished difference Result 2434 states and 7660 transitions. [2022-01-18 07:17:16,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 07:17:16,128 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:17:16,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:16,150 INFO L225 Difference]: With dead ends: 2434 [2022-01-18 07:17:16,150 INFO L226 Difference]: Without dead ends: 2420 [2022-01-18 07:17:16,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1291 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=783, Invalid=3249, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 07:17:16,151 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 531 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:16,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 278 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 550 Invalid, 0 Unknown, 135 Unchecked, 0.3s Time] [2022-01-18 07:17:16,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2022-01-18 07:17:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 1228. [2022-01-18 07:17:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1227 states have (on average 3.493072534637327) internal successors, (4286), 1227 states have internal predecessors, (4286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:16,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 4286 transitions. [2022-01-18 07:17:16,172 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 4286 transitions. Word has length 28 [2022-01-18 07:17:16,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:16,173 INFO L470 AbstractCegarLoop]: Abstraction has 1228 states and 4286 transitions. [2022-01-18 07:17:16,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:16,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 4286 transitions. [2022-01-18 07:17:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:17:16,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:16,175 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:16,191 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 07:17:16,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:16,375 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:16,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:16,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1118800371, now seen corresponding path program 5 times [2022-01-18 07:17:16,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:16,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971781132] [2022-01-18 07:17:16,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:16,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:16,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:16,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:16,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971781132] [2022-01-18 07:17:16,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971781132] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:16,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943492026] [2022-01-18 07:17:16,597 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:17:16,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:16,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:16,598 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 07:17:16,598 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 07:17:16,624 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:17:16,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:16,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 07:17:16,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:16,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:17:16,840 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:17:16,840 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:17:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:16,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:17,010 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:17:17,010 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:17:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:17,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943492026] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:17,220 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:17,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 32 [2022-01-18 07:17:17,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406150297] [2022-01-18 07:17:17,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:17,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 07:17:17,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:17,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 07:17:17,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2022-01-18 07:17:17,221 INFO L87 Difference]: Start difference. First operand 1228 states and 4286 transitions. Second operand has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:20,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:20,262 INFO L93 Difference]: Finished difference Result 3044 states and 9116 transitions. [2022-01-18 07:17:20,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-18 07:17:20,262 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:17:20,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:20,268 INFO L225 Difference]: With dead ends: 3044 [2022-01-18 07:17:20,268 INFO L226 Difference]: Without dead ends: 3010 [2022-01-18 07:17:20,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5332 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2250, Invalid=11556, Unknown=0, NotChecked=0, Total=13806 [2022-01-18 07:17:20,270 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 806 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 732 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:20,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 531 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 870 Invalid, 0 Unknown, 732 Unchecked, 0.4s Time] [2022-01-18 07:17:20,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2022-01-18 07:17:20,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1385. [2022-01-18 07:17:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1384 states have (on average 3.538294797687861) internal successors, (4897), 1384 states have internal predecessors, (4897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 4897 transitions. [2022-01-18 07:17:20,302 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 4897 transitions. Word has length 28 [2022-01-18 07:17:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:20,302 INFO L470 AbstractCegarLoop]: Abstraction has 1385 states and 4897 transitions. [2022-01-18 07:17:20,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:20,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 4897 transitions. [2022-01-18 07:17:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:17:20,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:20,304 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:20,322 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 07:17:20,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:20,515 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:20,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:20,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1056275707, now seen corresponding path program 25 times [2022-01-18 07:17:20,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:20,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366642563] [2022-01-18 07:17:20,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:20,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:20,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:20,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366642563] [2022-01-18 07:17:20,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366642563] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:20,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579369485] [2022-01-18 07:17:20,791 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:17:20,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:20,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:20,793 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 07:17:20,793 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 07:17:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:20,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 07:17:20,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:21,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-18 07:17:21,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:17:21,135 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:17:21,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:21,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:21,238 INFO L353 Elim1Store]: treesize reduction 20, result has 31.0 percent of original size [2022-01-18 07:17:21,238 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 22 [2022-01-18 07:17:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:21,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579369485] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:21,489 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:21,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 34 [2022-01-18 07:17:21,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113114417] [2022-01-18 07:17:21,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:21,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 07:17:21,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:21,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 07:17:21,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 07:17:21,490 INFO L87 Difference]: Start difference. First operand 1385 states and 4897 transitions. Second operand has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 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 07:17:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:25,322 INFO L93 Difference]: Finished difference Result 2663 states and 8706 transitions. [2022-01-18 07:17:25,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 07:17:25,323 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 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 28 [2022-01-18 07:17:25,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:25,328 INFO L225 Difference]: With dead ends: 2663 [2022-01-18 07:17:25,328 INFO L226 Difference]: Without dead ends: 2636 [2022-01-18 07:17:25,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4309 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1806, Invalid=11304, Unknown=0, NotChecked=0, Total=13110 [2022-01-18 07:17:25,331 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 564 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 2128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:25,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 419 Invalid, 2128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1923 Invalid, 0 Unknown, 68 Unchecked, 0.8s Time] [2022-01-18 07:17:25,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2022-01-18 07:17:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 1620. [2022-01-18 07:17:25,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1619 states have (on average 3.449042618900556) internal successors, (5584), 1619 states have internal predecessors, (5584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:25,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 5584 transitions. [2022-01-18 07:17:25,362 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 5584 transitions. Word has length 28 [2022-01-18 07:17:25,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:25,362 INFO L470 AbstractCegarLoop]: Abstraction has 1620 states and 5584 transitions. [2022-01-18 07:17:25,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 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 07:17:25,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 5584 transitions. [2022-01-18 07:17:25,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:17:25,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:25,364 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:25,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 07:17:25,580 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,SelfDestructingSolverStorable31 [2022-01-18 07:17:25,580 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:25,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:25,580 INFO L85 PathProgramCache]: Analyzing trace with hash -418897327, now seen corresponding path program 6 times [2022-01-18 07:17:25,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:25,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081715336] [2022-01-18 07:17:25,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:25,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:25,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:25,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081715336] [2022-01-18 07:17:25,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081715336] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:25,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630211099] [2022-01-18 07:17:25,884 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:17:25,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:25,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:25,885 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 07:17:25,885 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 07:17:25,912 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:17:25,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:25,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 07:17:25,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:26,041 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:17:26,122 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:17:26,122 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:17:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 07:17:26,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:26,297 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:17:26,298 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:17:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 07:17:26,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630211099] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:26,454 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:26,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 28 [2022-01-18 07:17:26,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408643441] [2022-01-18 07:17:26,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:26,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 07:17:26,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:26,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 07:17:26,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2022-01-18 07:17:26,455 INFO L87 Difference]: Start difference. First operand 1620 states and 5584 transitions. Second operand has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:27,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:27,780 INFO L93 Difference]: Finished difference Result 2371 states and 7702 transitions. [2022-01-18 07:17:27,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 07:17:27,781 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:17:27,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:27,785 INFO L225 Difference]: With dead ends: 2371 [2022-01-18 07:17:27,785 INFO L226 Difference]: Without dead ends: 2357 [2022-01-18 07:17:27,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=576, Invalid=2846, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 07:17:27,786 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 375 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 530 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:27,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 353 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 609 Invalid, 0 Unknown, 530 Unchecked, 0.3s Time] [2022-01-18 07:17:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2022-01-18 07:17:27,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 1669. [2022-01-18 07:17:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1668 states have (on average 3.4502398081534773) internal successors, (5755), 1668 states have internal predecessors, (5755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:27,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 5755 transitions. [2022-01-18 07:17:27,811 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 5755 transitions. Word has length 28 [2022-01-18 07:17:27,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:27,811 INFO L470 AbstractCegarLoop]: Abstraction has 1669 states and 5755 transitions. [2022-01-18 07:17:27,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:27,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 5755 transitions. [2022-01-18 07:17:27,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:17:27,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:27,814 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:27,832 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 07:17:28,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:28,027 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:28,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:28,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1851738833, now seen corresponding path program 26 times [2022-01-18 07:17:28,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:28,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459955311] [2022-01-18 07:17:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:28,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:28,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:28,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459955311] [2022-01-18 07:17:28,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459955311] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:28,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530466627] [2022-01-18 07:17:28,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:17:28,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:28,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:28,266 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 07:17:28,266 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 07:17:28,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:17:28,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:28,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 07:17:28,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:28,429 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:17:28,499 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:17:28,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:17:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 07:17:28,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:28,821 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:17:28,821 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:17:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 07:17:29,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530466627] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:29,016 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:29,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 27 [2022-01-18 07:17:29,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010382704] [2022-01-18 07:17:29,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:29,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 07:17:29,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:29,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 07:17:29,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:17:29,017 INFO L87 Difference]: Start difference. First operand 1669 states and 5755 transitions. Second operand has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 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 07:17:39,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:39,298 INFO L93 Difference]: Finished difference Result 5759 states and 17999 transitions. [2022-01-18 07:17:39,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2022-01-18 07:17:39,299 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 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 28 [2022-01-18 07:17:39,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:39,309 INFO L225 Difference]: With dead ends: 5759 [2022-01-18 07:17:39,309 INFO L226 Difference]: Without dead ends: 5521 [2022-01-18 07:17:39,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24477 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=6244, Invalid=49688, Unknown=0, NotChecked=0, Total=55932 [2022-01-18 07:17:39,313 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 891 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 5007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3320 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:39,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [891 Valid, 919 Invalid, 5007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1475 Invalid, 0 Unknown, 3320 Unchecked, 0.8s Time] [2022-01-18 07:17:39,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5521 states. [2022-01-18 07:17:39,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5521 to 2289. [2022-01-18 07:17:39,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2288 states have (on average 3.513986013986014) internal successors, (8040), 2288 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:39,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 8040 transitions. [2022-01-18 07:17:39,378 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 8040 transitions. Word has length 28 [2022-01-18 07:17:39,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:39,378 INFO L470 AbstractCegarLoop]: Abstraction has 2289 states and 8040 transitions. [2022-01-18 07:17:39,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 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 07:17:39,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 8040 transitions. [2022-01-18 07:17:39,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:17:39,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:39,382 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:39,398 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 07:17:39,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:39,595 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:39,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:39,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1976681611, now seen corresponding path program 7 times [2022-01-18 07:17:39,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:39,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303970761] [2022-01-18 07:17:39,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:39,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:39,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:39,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:39,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303970761] [2022-01-18 07:17:39,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303970761] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:39,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524822861] [2022-01-18 07:17:39,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:17:39,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:39,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:39,861 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 07:17:39,862 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 07:17:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:39,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 07:17:39,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:40,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:17:40,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:17:40,199 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:17:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:40,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:40,302 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:17:40,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:17:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:40,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524822861] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:40,589 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:40,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-01-18 07:17:40,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698964057] [2022-01-18 07:17:40,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:40,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 07:17:40,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:40,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 07:17:40,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2022-01-18 07:17:40,590 INFO L87 Difference]: Start difference. First operand 2289 states and 8040 transitions. Second operand has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:42,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:42,273 INFO L93 Difference]: Finished difference Result 4514 states and 14306 transitions. [2022-01-18 07:17:42,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 07:17:42,274 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:17:42,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:42,280 INFO L225 Difference]: With dead ends: 4514 [2022-01-18 07:17:42,280 INFO L226 Difference]: Without dead ends: 3964 [2022-01-18 07:17:42,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=802, Invalid=3358, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 07:17:42,281 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 542 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 328 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:42,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 291 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 794 Invalid, 0 Unknown, 328 Unchecked, 0.4s Time] [2022-01-18 07:17:42,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3964 states. [2022-01-18 07:17:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3964 to 2294. [2022-01-18 07:17:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 2293 states have (on average 3.4888791975577846) internal successors, (8000), 2293 states have internal predecessors, (8000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:42,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 8000 transitions. [2022-01-18 07:17:42,321 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 8000 transitions. Word has length 28 [2022-01-18 07:17:42,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:42,321 INFO L470 AbstractCegarLoop]: Abstraction has 2294 states and 8000 transitions. [2022-01-18 07:17:42,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 8000 transitions. [2022-01-18 07:17:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:17:42,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:42,325 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:42,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-01-18 07:17:42,525 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,SelfDestructingSolverStorable34 [2022-01-18 07:17:42,525 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:42,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:42,525 INFO L85 PathProgramCache]: Analyzing trace with hash 114975881, now seen corresponding path program 8 times [2022-01-18 07:17:42,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:42,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782854041] [2022-01-18 07:17:42,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:42,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:42,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:42,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782854041] [2022-01-18 07:17:42,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782854041] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:42,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209046242] [2022-01-18 07:17:42,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:17:42,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:42,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:42,791 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 07:17:42,791 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 07:17:42,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:17:42,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:42,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 07:17:42,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:42,941 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:17:43,029 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:17:43,029 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:17:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 07:17:43,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:43,208 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:17:43,208 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:17:43,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 07:17:43,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209046242] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:43,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:43,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 28 [2022-01-18 07:17:43,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637472535] [2022-01-18 07:17:43,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:43,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 07:17:43,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:43,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 07:17:43,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2022-01-18 07:17:43,361 INFO L87 Difference]: Start difference. First operand 2294 states and 8000 transitions. Second operand has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:44,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:44,702 INFO L93 Difference]: Finished difference Result 3130 states and 10228 transitions. [2022-01-18 07:17:44,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 07:17:44,702 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:17:44,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:44,708 INFO L225 Difference]: With dead ends: 3130 [2022-01-18 07:17:44,708 INFO L226 Difference]: Without dead ends: 3112 [2022-01-18 07:17:44,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=586, Invalid=2954, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 07:17:44,708 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 408 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 552 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:44,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 354 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 582 Invalid, 0 Unknown, 552 Unchecked, 0.3s Time] [2022-01-18 07:17:44,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2022-01-18 07:17:44,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 2324. [2022-01-18 07:17:44,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2324 states, 2323 states have (on average 3.484287559190702) internal successors, (8094), 2323 states have internal predecessors, (8094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 8094 transitions. [2022-01-18 07:17:44,744 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 8094 transitions. Word has length 28 [2022-01-18 07:17:44,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:44,744 INFO L470 AbstractCegarLoop]: Abstraction has 2324 states and 8094 transitions. [2022-01-18 07:17:44,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:44,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 8094 transitions. [2022-01-18 07:17:44,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:17:44,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:44,748 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:44,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-01-18 07:17:44,963 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,SelfDestructingSolverStorable35 [2022-01-18 07:17:44,963 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:44,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:44,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1675136757, now seen corresponding path program 9 times [2022-01-18 07:17:44,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:44,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963578789] [2022-01-18 07:17:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:44,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:45,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:45,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963578789] [2022-01-18 07:17:45,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963578789] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:45,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707021139] [2022-01-18 07:17:45,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:17:45,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:45,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:45,203 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 07:17:45,204 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 07:17:45,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 07:17:45,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:45,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 07:17:45,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:45,351 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:17:45,444 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:17:45,444 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:17:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 07:17:45,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:45,698 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:17:45,698 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:17:45,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 07:17:45,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707021139] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:45,850 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:45,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 27 [2022-01-18 07:17:45,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668340720] [2022-01-18 07:17:45,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:45,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 07:17:45,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:45,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 07:17:45,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:17:45,851 INFO L87 Difference]: Start difference. First operand 2324 states and 8094 transitions. Second operand has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 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 07:17:47,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:47,280 INFO L93 Difference]: Finished difference Result 3157 states and 10316 transitions. [2022-01-18 07:17:47,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 07:17:47,280 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 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 28 [2022-01-18 07:17:47,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:47,285 INFO L225 Difference]: With dead ends: 3157 [2022-01-18 07:17:47,285 INFO L226 Difference]: Without dead ends: 3121 [2022-01-18 07:17:47,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=540, Invalid=2766, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 07:17:47,286 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 389 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 947 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:47,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 359 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 595 Invalid, 0 Unknown, 947 Unchecked, 0.3s Time] [2022-01-18 07:17:47,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2022-01-18 07:17:47,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 2355. [2022-01-18 07:17:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2354 states have (on average 3.4766355140186915) internal successors, (8184), 2354 states have internal predecessors, (8184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:47,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 8184 transitions. [2022-01-18 07:17:47,324 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 8184 transitions. Word has length 28 [2022-01-18 07:17:47,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:47,324 INFO L470 AbstractCegarLoop]: Abstraction has 2355 states and 8184 transitions. [2022-01-18 07:17:47,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 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 07:17:47,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 8184 transitions. [2022-01-18 07:17:47,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:17:47,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:47,328 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:47,345 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 07:17:47,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 07:17:47,535 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:47,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:47,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1315804659, now seen corresponding path program 10 times [2022-01-18 07:17:47,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:47,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862595896] [2022-01-18 07:17:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:47,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:47,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:47,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:47,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862595896] [2022-01-18 07:17:47,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862595896] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:47,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139805716] [2022-01-18 07:17:47,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:17:47,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:47,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:47,778 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 07:17:47,779 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 07:17:47,809 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:17:47,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:47,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 07:17:47,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:48,019 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:17:48,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:17:48,078 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:17:48,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:48,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:48,238 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:17:48,238 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:17:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:48,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139805716] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:48,513 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:48,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-01-18 07:17:48,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795946276] [2022-01-18 07:17:48,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:48,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 07:17:48,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:48,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 07:17:48,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=812, Unknown=0, NotChecked=0, Total=992 [2022-01-18 07:17:48,514 INFO L87 Difference]: Start difference. First operand 2355 states and 8184 transitions. Second operand has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:50,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:50,660 INFO L93 Difference]: Finished difference Result 5240 states and 16371 transitions. [2022-01-18 07:17:50,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 07:17:50,661 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:17:50,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:50,669 INFO L225 Difference]: With dead ends: 5240 [2022-01-18 07:17:50,669 INFO L226 Difference]: Without dead ends: 5044 [2022-01-18 07:17:50,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1726 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1015, Invalid=4241, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 07:17:50,671 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 707 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:50,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 309 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 888 Invalid, 0 Unknown, 171 Unchecked, 0.5s Time] [2022-01-18 07:17:50,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5044 states. [2022-01-18 07:17:50,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5044 to 2447. [2022-01-18 07:17:50,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2446 states have (on average 3.4603434178250203) internal successors, (8464), 2446 states have internal predecessors, (8464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 8464 transitions. [2022-01-18 07:17:50,731 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 8464 transitions. Word has length 28 [2022-01-18 07:17:50,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:50,731 INFO L470 AbstractCegarLoop]: Abstraction has 2447 states and 8464 transitions. [2022-01-18 07:17:50,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:50,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 8464 transitions. [2022-01-18 07:17:50,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:17:50,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:50,735 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:50,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 07:17:50,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:50,936 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:50,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:50,936 INFO L85 PathProgramCache]: Analyzing trace with hash 114198423, now seen corresponding path program 11 times [2022-01-18 07:17:50,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:50,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361281579] [2022-01-18 07:17:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:50,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:51,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:51,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361281579] [2022-01-18 07:17:51,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361281579] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:51,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299115701] [2022-01-18 07:17:51,180 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:17:51,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:51,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:51,181 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:17:51,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 07:17:51,209 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:17:51,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:51,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 07:17:51,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:51,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:17:51,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:17:51,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:17:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:51,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:51,618 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:17:51,619 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:17:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:51,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299115701] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:51,924 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:51,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 34 [2022-01-18 07:17:51,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117922390] [2022-01-18 07:17:51,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:51,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 07:17:51,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:51,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 07:17:51,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 07:17:51,925 INFO L87 Difference]: Start difference. First operand 2447 states and 8464 transitions. Second operand has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:54,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:54,545 INFO L93 Difference]: Finished difference Result 4592 states and 14339 transitions. [2022-01-18 07:17:54,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 07:17:54,545 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:17:54,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:54,552 INFO L225 Difference]: With dead ends: 4592 [2022-01-18 07:17:54,552 INFO L226 Difference]: Without dead ends: 3982 [2022-01-18 07:17:54,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2599 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1266, Invalid=7290, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 07:17:54,553 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 539 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:54,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 450 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1311 Invalid, 0 Unknown, 105 Unchecked, 0.6s Time] [2022-01-18 07:17:54,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2022-01-18 07:17:54,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 2437. [2022-01-18 07:17:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2436 states have (on average 3.4564860426929394) internal successors, (8420), 2436 states have internal predecessors, (8420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:54,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 8420 transitions. [2022-01-18 07:17:54,593 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 8420 transitions. Word has length 28 [2022-01-18 07:17:54,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:54,594 INFO L470 AbstractCegarLoop]: Abstraction has 2437 states and 8420 transitions. [2022-01-18 07:17:54,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:54,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 8420 transitions. [2022-01-18 07:17:54,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:17:54,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:54,597 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:54,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-01-18 07:17:54,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 07:17:54,798 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:54,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:54,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1910068349, now seen corresponding path program 12 times [2022-01-18 07:17:54,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:54,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426035049] [2022-01-18 07:17:54,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:54,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:55,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:55,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:55,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426035049] [2022-01-18 07:17:55,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426035049] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:55,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527614705] [2022-01-18 07:17:55,128 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:17:55,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:55,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:55,129 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:17:55,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 07:17:55,158 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:17:55,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:17:55,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 07:17:55,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:55,290 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:17:55,346 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:17:55,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:17:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 07:17:55,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:55,565 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:17:55,565 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:17:55,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 07:17:55,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527614705] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:55,704 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:55,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 28 [2022-01-18 07:17:55,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731254841] [2022-01-18 07:17:55,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:55,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 07:17:55,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:55,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 07:17:55,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2022-01-18 07:17:55,704 INFO L87 Difference]: Start difference. First operand 2437 states and 8420 transitions. Second operand has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:57,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:17:57,654 INFO L93 Difference]: Finished difference Result 5107 states and 16349 transitions. [2022-01-18 07:17:57,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 07:17:57,655 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:17:57,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:17:57,683 INFO L225 Difference]: With dead ends: 5107 [2022-01-18 07:17:57,683 INFO L226 Difference]: Without dead ends: 5003 [2022-01-18 07:17:57,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=898, Invalid=4214, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 07:17:57,684 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 535 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:17:57,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 291 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1254 Invalid, 0 Unknown, 213 Unchecked, 0.6s Time] [2022-01-18 07:17:57,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5003 states. [2022-01-18 07:17:57,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5003 to 2590. [2022-01-18 07:17:57,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 2589 states have (on average 3.467361915797605) internal successors, (8977), 2589 states have internal predecessors, (8977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 8977 transitions. [2022-01-18 07:17:57,727 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 8977 transitions. Word has length 28 [2022-01-18 07:17:57,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:17:57,727 INFO L470 AbstractCegarLoop]: Abstraction has 2590 states and 8977 transitions. [2022-01-18 07:17:57,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:17:57,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 8977 transitions. [2022-01-18 07:17:57,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:17:57,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:17:57,732 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:17:57,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-18 07:17:57,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 07:17:57,947 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:17:57,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:17:57,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1658751993, now seen corresponding path program 13 times [2022-01-18 07:17:57,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:17:57,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696845861] [2022-01-18 07:17:57,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:17:57,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:17:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:58,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:17:58,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696845861] [2022-01-18 07:17:58,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696845861] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:17:58,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656551230] [2022-01-18 07:17:58,178 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:17:58,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:17:58,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:17:58,179 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:17:58,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 07:17:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:17:58,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 07:17:58,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:17:58,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:17:58,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:17:58,489 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:17:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:58,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:17:58,635 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:17:58,635 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:17:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:17:58,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656551230] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:17:58,907 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:17:58,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-01-18 07:17:58,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565407351] [2022-01-18 07:17:58,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:17:58,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 07:17:58,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:17:58,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 07:17:58,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-01-18 07:17:58,907 INFO L87 Difference]: Start difference. First operand 2590 states and 8977 transitions. Second operand has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:03,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:18:03,011 INFO L93 Difference]: Finished difference Result 7272 states and 22400 transitions. [2022-01-18 07:18:03,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 07:18:03,011 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:18:03,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:18:03,021 INFO L225 Difference]: With dead ends: 7272 [2022-01-18 07:18:03,022 INFO L226 Difference]: Without dead ends: 6253 [2022-01-18 07:18:03,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 35 SyntacticMatches, 7 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4695 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2043, Invalid=9729, Unknown=0, NotChecked=0, Total=11772 [2022-01-18 07:18:03,022 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 751 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 437 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:18:03,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 590 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1320 Invalid, 0 Unknown, 437 Unchecked, 0.6s Time] [2022-01-18 07:18:03,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2022-01-18 07:18:03,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 2336. [2022-01-18 07:18:03,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 2335 states have (on average 3.5190578158458243) internal successors, (8217), 2335 states have internal predecessors, (8217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:03,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 8217 transitions. [2022-01-18 07:18:03,074 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 8217 transitions. Word has length 28 [2022-01-18 07:18:03,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:18:03,074 INFO L470 AbstractCegarLoop]: Abstraction has 2336 states and 8217 transitions. [2022-01-18 07:18:03,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:03,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 8217 transitions. [2022-01-18 07:18:03,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:18:03,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:18:03,078 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:18:03,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 07:18:03,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:03,279 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:18:03,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:18:03,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1985955337, now seen corresponding path program 14 times [2022-01-18 07:18:03,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:18:03,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78570001] [2022-01-18 07:18:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:18:03,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:18:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:03,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:18:03,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78570001] [2022-01-18 07:18:03,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78570001] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:18:03,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112876204] [2022-01-18 07:18:03,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:18:03,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:03,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:18:03,450 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:18:03,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 07:18:03,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:18:03,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:18:03,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 07:18:03,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:18:03,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:18:03,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:18:03,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:18:03,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:03,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:18:03,919 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:18:03,919 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:18:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:04,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112876204] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:18:04,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:18:04,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 30 [2022-01-18 07:18:04,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429460882] [2022-01-18 07:18:04,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:18:04,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 07:18:04,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:18:04,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 07:18:04,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2022-01-18 07:18:04,187 INFO L87 Difference]: Start difference. First operand 2336 states and 8217 transitions. Second operand has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 30 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:08,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:18:08,720 INFO L93 Difference]: Finished difference Result 6744 states and 20808 transitions. [2022-01-18 07:18:08,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 07:18:08,720 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 30 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:18:08,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:18:08,730 INFO L225 Difference]: With dead ends: 6744 [2022-01-18 07:18:08,730 INFO L226 Difference]: Without dead ends: 6046 [2022-01-18 07:18:08,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3961 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1746, Invalid=10026, Unknown=0, NotChecked=0, Total=11772 [2022-01-18 07:18:08,731 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 707 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 2316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:18:08,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 501 Invalid, 2316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1947 Invalid, 0 Unknown, 215 Unchecked, 0.9s Time] [2022-01-18 07:18:08,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2022-01-18 07:18:08,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 2663. [2022-01-18 07:18:08,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 3.477460555972953) internal successors, (9257), 2662 states have internal predecessors, (9257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:08,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 9257 transitions. [2022-01-18 07:18:08,796 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 9257 transitions. Word has length 28 [2022-01-18 07:18:08,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:18:08,796 INFO L470 AbstractCegarLoop]: Abstraction has 2663 states and 9257 transitions. [2022-01-18 07:18:08,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 30 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:08,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 9257 transitions. [2022-01-18 07:18:08,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:18:08,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:18:08,800 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:18:08,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-18 07:18:09,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-01-18 07:18:09,016 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:18:09,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:18:09,016 INFO L85 PathProgramCache]: Analyzing trace with hash 343870545, now seen corresponding path program 15 times [2022-01-18 07:18:09,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:18:09,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191826564] [2022-01-18 07:18:09,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:18:09,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:18:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:09,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:18:09,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191826564] [2022-01-18 07:18:09,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191826564] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:18:09,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364421329] [2022-01-18 07:18:09,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:18:09,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:09,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:18:09,357 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:18:09,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 07:18:09,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:18:09,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:18:09,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 07:18:09,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:18:09,507 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:18:09,562 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-18 07:18:09,562 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-01-18 07:18:09,655 INFO L353 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-01-18 07:18:09,655 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2022-01-18 07:18:09,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:09,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:18:09,919 INFO L353 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2022-01-18 07:18:09,920 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 34 [2022-01-18 07:18:09,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:18:09,926 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 94 [2022-01-18 07:18:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:10,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364421329] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:18:10,168 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:18:10,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2022-01-18 07:18:10,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907958252] [2022-01-18 07:18:10,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:18:10,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 07:18:10,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:18:10,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 07:18:10,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2022-01-18 07:18:10,169 INFO L87 Difference]: Start difference. First operand 2663 states and 9257 transitions. Second operand has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:13,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:18:13,011 INFO L93 Difference]: Finished difference Result 5559 states and 18294 transitions. [2022-01-18 07:18:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 07:18:13,012 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:18:13,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:18:13,021 INFO L225 Difference]: With dead ends: 5559 [2022-01-18 07:18:13,021 INFO L226 Difference]: Without dead ends: 5190 [2022-01-18 07:18:13,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=721, Invalid=4681, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 07:18:13,022 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 492 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 1698 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 2319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 512 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:18:13,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 526 Invalid, 2319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1698 Invalid, 0 Unknown, 512 Unchecked, 0.8s Time] [2022-01-18 07:18:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5190 states. [2022-01-18 07:18:13,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5190 to 3152. [2022-01-18 07:18:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3152 states, 3151 states have (on average 3.502697556331323) internal successors, (11037), 3151 states have internal predecessors, (11037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:13,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3152 states to 3152 states and 11037 transitions. [2022-01-18 07:18:13,079 INFO L78 Accepts]: Start accepts. Automaton has 3152 states and 11037 transitions. Word has length 28 [2022-01-18 07:18:13,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:18:13,079 INFO L470 AbstractCegarLoop]: Abstraction has 3152 states and 11037 transitions. [2022-01-18 07:18:13,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3152 states and 11037 transitions. [2022-01-18 07:18:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:18:13,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:18:13,085 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:18:13,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-01-18 07:18:13,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:13,285 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:18:13,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:18:13,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1015948307, now seen corresponding path program 16 times [2022-01-18 07:18:13,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:18:13,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138336331] [2022-01-18 07:18:13,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:18:13,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:18:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:13,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:13,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:18:13,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138336331] [2022-01-18 07:18:13,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138336331] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:18:13,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184402538] [2022-01-18 07:18:13,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:18:13,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:13,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:18:13,562 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:18:13,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 07:18:13,592 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:18:13,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:18:13,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 07:18:13,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:18:13,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:18:13,813 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:18:13,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:18:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:18:13,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:18:13,928 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:18:13,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:18:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:18:14,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184402538] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:18:14,103 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:18:14,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2022-01-18 07:18:14,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068331529] [2022-01-18 07:18:14,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:18:14,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 07:18:14,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:18:14,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 07:18:14,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:18:14,104 INFO L87 Difference]: Start difference. First operand 3152 states and 11037 transitions. Second operand has 26 states, 26 states have (on average 2.8461538461538463) internal successors, (74), 26 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 07:18:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:18:14,756 INFO L93 Difference]: Finished difference Result 6285 states and 20866 transitions. [2022-01-18 07:18:14,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 07:18:14,756 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8461538461538463) internal successors, (74), 26 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 28 [2022-01-18 07:18:14,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:18:14,766 INFO L225 Difference]: With dead ends: 6285 [2022-01-18 07:18:14,766 INFO L226 Difference]: Without dead ends: 6055 [2022-01-18 07:18:14,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=316, Invalid=1576, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 07:18:14,767 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 323 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 558 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:18:14,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 257 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 463 Invalid, 0 Unknown, 558 Unchecked, 0.2s Time] [2022-01-18 07:18:14,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6055 states. [2022-01-18 07:18:14,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6055 to 3620. [2022-01-18 07:18:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 3.4995855208621167) internal successors, (12665), 3619 states have internal predecessors, (12665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:14,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12665 transitions. [2022-01-18 07:18:14,839 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12665 transitions. Word has length 28 [2022-01-18 07:18:14,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:18:14,839 INFO L470 AbstractCegarLoop]: Abstraction has 3620 states and 12665 transitions. [2022-01-18 07:18:14,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8461538461538463) internal successors, (74), 26 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 07:18:14,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12665 transitions. [2022-01-18 07:18:14,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:18:14,845 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:18:14,846 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:18:14,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-01-18 07:18:15,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:15,055 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:18:15,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:18:15,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1605273733, now seen corresponding path program 17 times [2022-01-18 07:18:15,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:18:15,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605028090] [2022-01-18 07:18:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:18:15,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:18:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:15,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:15,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:18:15,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605028090] [2022-01-18 07:18:15,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605028090] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:18:15,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30050031] [2022-01-18 07:18:15,325 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:18:15,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:15,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:18:15,326 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:18:15,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 07:18:15,357 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:18:15,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:18:15,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 07:18:15,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:18:15,507 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:18:15,577 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:18:15,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:18:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:18:15,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:18:15,696 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:18:15,696 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:18:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:18:15,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30050031] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:18:15,854 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:18:15,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2022-01-18 07:18:15,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534694143] [2022-01-18 07:18:15,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:18:15,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 07:18:15,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:18:15,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 07:18:15,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:18:15,855 INFO L87 Difference]: Start difference. First operand 3620 states and 12665 transitions. Second operand has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 26 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:16,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:18:16,570 INFO L93 Difference]: Finished difference Result 6620 states and 22064 transitions. [2022-01-18 07:18:16,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 07:18:16,570 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 26 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:18:16,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:18:16,582 INFO L225 Difference]: With dead ends: 6620 [2022-01-18 07:18:16,582 INFO L226 Difference]: Without dead ends: 6238 [2022-01-18 07:18:16,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=347, Invalid=1723, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 07:18:16,582 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 296 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 408 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:18:16,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 338 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 563 Invalid, 0 Unknown, 408 Unchecked, 0.2s Time] [2022-01-18 07:18:16,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2022-01-18 07:18:16,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 3748. [2022-01-18 07:18:16,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3748 states, 3747 states have (on average 3.493461435815319) internal successors, (13090), 3747 states have internal predecessors, (13090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:16,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3748 states to 3748 states and 13090 transitions. [2022-01-18 07:18:16,652 INFO L78 Accepts]: Start accepts. Automaton has 3748 states and 13090 transitions. Word has length 28 [2022-01-18 07:18:16,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:18:16,652 INFO L470 AbstractCegarLoop]: Abstraction has 3748 states and 13090 transitions. [2022-01-18 07:18:16,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 26 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:16,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3748 states and 13090 transitions. [2022-01-18 07:18:16,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:18:16,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:18:16,659 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:18:16,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-01-18 07:18:16,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-01-18 07:18:16,863 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:18:16,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:18:16,863 INFO L85 PathProgramCache]: Analyzing trace with hash 931718669, now seen corresponding path program 18 times [2022-01-18 07:18:16,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:18:16,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13044286] [2022-01-18 07:18:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:18:16,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:18:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:17,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:17,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:18:17,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13044286] [2022-01-18 07:18:17,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13044286] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:18:17,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516950683] [2022-01-18 07:18:17,112 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:18:17,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:17,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:18:17,113 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:18:17,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 07:18:17,157 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:18:17,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:18:17,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 07:18:17,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:18:17,290 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:18:17,335 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:18:17,335 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:18:17,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:18:17,444 INFO L353 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-01-18 07:18:17,444 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:18:17,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:17,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:18:17,720 INFO L353 Elim1Store]: treesize reduction 15, result has 69.4 percent of original size [2022-01-18 07:18:17,721 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 48 [2022-01-18 07:18:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:18,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516950683] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:18:18,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:18:18,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 34 [2022-01-18 07:18:18,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062823843] [2022-01-18 07:18:18,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:18:18,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 07:18:18,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:18:18,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 07:18:18,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 07:18:18,028 INFO L87 Difference]: Start difference. First operand 3748 states and 13090 transitions. Second operand has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:22,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:18:22,551 INFO L93 Difference]: Finished difference Result 7139 states and 22944 transitions. [2022-01-18 07:18:22,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 07:18:22,551 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:18:22,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:18:22,563 INFO L225 Difference]: With dead ends: 7139 [2022-01-18 07:18:22,563 INFO L226 Difference]: Without dead ends: 6600 [2022-01-18 07:18:22,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5129 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2276, Invalid=12244, Unknown=0, NotChecked=0, Total=14520 [2022-01-18 07:18:22,564 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 573 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1051 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:18:22,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 660 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1713 Invalid, 0 Unknown, 1051 Unchecked, 0.8s Time] [2022-01-18 07:18:22,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6600 states. [2022-01-18 07:18:22,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6600 to 3868. [2022-01-18 07:18:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 3867 states have (on average 3.507887251099043) internal successors, (13565), 3867 states have internal predecessors, (13565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:22,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 13565 transitions. [2022-01-18 07:18:22,633 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 13565 transitions. Word has length 28 [2022-01-18 07:18:22,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:18:22,634 INFO L470 AbstractCegarLoop]: Abstraction has 3868 states and 13565 transitions. [2022-01-18 07:18:22,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:22,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 13565 transitions. [2022-01-18 07:18:22,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:18:22,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:18:22,640 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:18:22,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 07:18:22,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-01-18 07:18:22,840 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:18:22,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:18:22,841 INFO L85 PathProgramCache]: Analyzing trace with hash 246162663, now seen corresponding path program 19 times [2022-01-18 07:18:22,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:18:22,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976415381] [2022-01-18 07:18:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:18:22,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:18:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:22,907 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:22,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:18:22,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976415381] [2022-01-18 07:18:22,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976415381] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:18:22,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866256081] [2022-01-18 07:18:22,907 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:18:22,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:22,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:18:22,908 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:18:22,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 07:18:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:22,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:18:22,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:18:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:23,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:18:23,183 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:23,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866256081] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:18:23,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:18:23,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-01-18 07:18:23,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732434442] [2022-01-18 07:18:23,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:18:23,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 07:18:23,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:18:23,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 07:18:23,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:18:23,184 INFO L87 Difference]: Start difference. First operand 3868 states and 13565 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 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 07:18:28,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:18:28,226 INFO L93 Difference]: Finished difference Result 16600 states and 52297 transitions. [2022-01-18 07:18:28,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2022-01-18 07:18:28,227 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 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 30 [2022-01-18 07:18:28,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:18:28,306 INFO L225 Difference]: With dead ends: 16600 [2022-01-18 07:18:28,306 INFO L226 Difference]: Without dead ends: 16600 [2022-01-18 07:18:28,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33128 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=12100, Invalid=60530, Unknown=0, NotChecked=0, Total=72630 [2022-01-18 07:18:28,308 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 1105 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 2747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:18:28,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 748 Invalid, 2747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 07:18:28,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16600 states. [2022-01-18 07:18:28,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16600 to 4468. [2022-01-18 07:18:28,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4467 states have (on average 3.640250727557645) internal successors, (16261), 4467 states have internal predecessors, (16261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:28,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 16261 transitions. [2022-01-18 07:18:28,466 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 16261 transitions. Word has length 30 [2022-01-18 07:18:28,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:18:28,466 INFO L470 AbstractCegarLoop]: Abstraction has 4468 states and 16261 transitions. [2022-01-18 07:18:28,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 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 07:18:28,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 16261 transitions. [2022-01-18 07:18:28,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:18:28,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:18:28,473 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:18:28,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-01-18 07:18:28,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 07:18:28,674 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:18:28,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:18:28,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1683112665, now seen corresponding path program 20 times [2022-01-18 07:18:28,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:18:28,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478446526] [2022-01-18 07:18:28,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:18:28,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:18:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:28,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:18:28,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478446526] [2022-01-18 07:18:28,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478446526] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:18:28,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71017584] [2022-01-18 07:18:28,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:18:28,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:28,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:18:28,728 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:18:28,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 07:18:28,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:18:28,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:18:28,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:18:28,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:18:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:28,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:18:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:29,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71017584] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:18:29,003 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:18:29,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-01-18 07:18:29,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991272605] [2022-01-18 07:18:29,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:18:29,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 07:18:29,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:18:29,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 07:18:29,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:18:29,003 INFO L87 Difference]: Start difference. First operand 4468 states and 16261 transitions. Second operand has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:33,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:18:33,537 INFO L93 Difference]: Finished difference Result 16854 states and 52503 transitions. [2022-01-18 07:18:33,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2022-01-18 07:18:33,537 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:18:33,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:18:33,610 INFO L225 Difference]: With dead ends: 16854 [2022-01-18 07:18:33,610 INFO L226 Difference]: Without dead ends: 16854 [2022-01-18 07:18:33,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27212 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=10717, Invalid=49063, Unknown=0, NotChecked=0, Total=59780 [2022-01-18 07:18:33,612 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 1209 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 2447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 07:18:33,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 766 Invalid, 2447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 07:18:33,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16854 states. [2022-01-18 07:18:33,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16854 to 4392. [2022-01-18 07:18:33,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4391 states have (on average 3.6178547028011843) internal successors, (15886), 4391 states have internal predecessors, (15886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:33,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 15886 transitions. [2022-01-18 07:18:33,762 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 15886 transitions. Word has length 30 [2022-01-18 07:18:33,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:18:33,762 INFO L470 AbstractCegarLoop]: Abstraction has 4392 states and 15886 transitions. [2022-01-18 07:18:33,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:33,762 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 15886 transitions. [2022-01-18 07:18:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:18:33,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:18:33,769 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:18:33,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-01-18 07:18:33,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:33,970 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:18:33,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:18:33,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1395922129, now seen corresponding path program 21 times [2022-01-18 07:18:33,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:18:33,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127798492] [2022-01-18 07:18:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:18:33,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:18:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:34,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:18:34,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127798492] [2022-01-18 07:18:34,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127798492] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:18:34,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217148878] [2022-01-18 07:18:34,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:18:34,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:34,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:18:34,031 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:18:34,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 07:18:34,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:18:34,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:18:34,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:18:34,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:18:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:34,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:18:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:34,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217148878] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:18:34,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:18:34,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-01-18 07:18:34,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777392738] [2022-01-18 07:18:34,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:18:34,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:18:34,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:18:34,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:18:34,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:18:34,269 INFO L87 Difference]: Start difference. First operand 4392 states and 15886 transitions. Second operand has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 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 07:18:36,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:18:36,934 INFO L93 Difference]: Finished difference Result 12242 states and 38213 transitions. [2022-01-18 07:18:36,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-01-18 07:18:36,935 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 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 30 [2022-01-18 07:18:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:18:36,958 INFO L225 Difference]: With dead ends: 12242 [2022-01-18 07:18:36,958 INFO L226 Difference]: Without dead ends: 12242 [2022-01-18 07:18:36,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11117 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4782, Invalid=21300, Unknown=0, NotChecked=0, Total=26082 [2022-01-18 07:18:36,961 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 719 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:18:36,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 644 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1951 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:18:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12242 states. [2022-01-18 07:18:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12242 to 4346. [2022-01-18 07:18:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4346 states, 4345 states have (on average 3.614729574223245) internal successors, (15706), 4345 states have internal predecessors, (15706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4346 states to 4346 states and 15706 transitions. [2022-01-18 07:18:37,110 INFO L78 Accepts]: Start accepts. Automaton has 4346 states and 15706 transitions. Word has length 30 [2022-01-18 07:18:37,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:18:37,111 INFO L470 AbstractCegarLoop]: Abstraction has 4346 states and 15706 transitions. [2022-01-18 07:18:37,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 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 07:18:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 4346 states and 15706 transitions. [2022-01-18 07:18:37,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:18:37,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:18:37,117 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:18:37,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-01-18 07:18:37,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-01-18 07:18:37,318 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:18:37,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:18:37,318 INFO L85 PathProgramCache]: Analyzing trace with hash -616619543, now seen corresponding path program 22 times [2022-01-18 07:18:37,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:18:37,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427350590] [2022-01-18 07:18:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:18:37,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:18:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:37,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:18:37,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427350590] [2022-01-18 07:18:37,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427350590] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:18:37,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053566388] [2022-01-18 07:18:37,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:18:37,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:37,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:18:37,371 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:18:37,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 07:18:37,402 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:18:37,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:18:37,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:18:37,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:18:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:37,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:18:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:37,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053566388] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:18:37,634 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:18:37,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-01-18 07:18:37,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840533052] [2022-01-18 07:18:37,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:18:37,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:18:37,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:18:37,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:18:37,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:18:37,635 INFO L87 Difference]: Start difference. First operand 4346 states and 15706 transitions. Second operand has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:40,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:18:40,138 INFO L93 Difference]: Finished difference Result 11838 states and 37015 transitions. [2022-01-18 07:18:40,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-01-18 07:18:40,139 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:18:40,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:18:40,161 INFO L225 Difference]: With dead ends: 11838 [2022-01-18 07:18:40,162 INFO L226 Difference]: Without dead ends: 11838 [2022-01-18 07:18:40,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10116 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4362, Invalid=20444, Unknown=0, NotChecked=0, Total=24806 [2022-01-18 07:18:40,163 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 714 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:18:40,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 635 Invalid, 2043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:18:40,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11838 states. [2022-01-18 07:18:40,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11838 to 4362. [2022-01-18 07:18:40,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 4361 states have (on average 3.60651226782848) internal successors, (15728), 4361 states have internal predecessors, (15728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:40,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 15728 transitions. [2022-01-18 07:18:40,277 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 15728 transitions. Word has length 30 [2022-01-18 07:18:40,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:18:40,278 INFO L470 AbstractCegarLoop]: Abstraction has 4362 states and 15728 transitions. [2022-01-18 07:18:40,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:40,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 15728 transitions. [2022-01-18 07:18:40,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:18:40,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:18:40,284 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:18:40,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-01-18 07:18:40,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-01-18 07:18:40,484 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:18:40,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:18:40,485 INFO L85 PathProgramCache]: Analyzing trace with hash -278477675, now seen corresponding path program 23 times [2022-01-18 07:18:40,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:18:40,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373438645] [2022-01-18 07:18:40,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:18:40,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:18:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:40,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:18:40,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373438645] [2022-01-18 07:18:40,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373438645] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:18:40,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857784106] [2022-01-18 07:18:40,528 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:18:40,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:40,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:18:40,529 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:18:40,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 07:18:40,565 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 07:18:40,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:18:40,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:18:40,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:18:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:40,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:18:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:40,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857784106] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:18:40,804 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:18:40,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 17 [2022-01-18 07:18:40,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391899674] [2022-01-18 07:18:40,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:18:40,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:18:40,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:18:40,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:18:40,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:18:40,805 INFO L87 Difference]: Start difference. First operand 4362 states and 15728 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:41,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:18:41,996 INFO L93 Difference]: Finished difference Result 10713 states and 33937 transitions. [2022-01-18 07:18:41,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 07:18:41,997 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:18:41,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:18:42,017 INFO L225 Difference]: With dead ends: 10713 [2022-01-18 07:18:42,018 INFO L226 Difference]: Without dead ends: 10713 [2022-01-18 07:18:42,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3054 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1779, Invalid=6231, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 07:18:42,019 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 435 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:18:42,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 438 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:18:42,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10713 states. [2022-01-18 07:18:42,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10713 to 4397. [2022-01-18 07:18:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4397 states, 4396 states have (on average 3.6139672429481347) internal successors, (15887), 4396 states have internal predecessors, (15887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:42,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 15887 transitions. [2022-01-18 07:18:42,140 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 15887 transitions. Word has length 30 [2022-01-18 07:18:42,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:18:42,140 INFO L470 AbstractCegarLoop]: Abstraction has 4397 states and 15887 transitions. [2022-01-18 07:18:42,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:42,140 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 15887 transitions. [2022-01-18 07:18:42,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:18:42,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:18:42,147 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:18:42,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 07:18:42,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:42,347 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:18:42,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:18:42,347 INFO L85 PathProgramCache]: Analyzing trace with hash 253428639, now seen corresponding path program 24 times [2022-01-18 07:18:42,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:18:42,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635795143] [2022-01-18 07:18:42,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:18:42,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:18:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:42,386 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:42,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:18:42,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635795143] [2022-01-18 07:18:42,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635795143] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:18:42,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148016861] [2022-01-18 07:18:42,387 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:18:42,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:42,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:18:42,388 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:18:42,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 07:18:42,424 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:18:42,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:18:42,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 07:18:42,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:18:42,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:18:42,613 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:18:42,613 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:18:42,744 INFO L353 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2022-01-18 07:18:42,744 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:18:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 07:18:42,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:18:42,986 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:18:42,986 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:18:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 07:18:43,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148016861] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:18:43,136 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:18:43,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 24 [2022-01-18 07:18:43,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375025711] [2022-01-18 07:18:43,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:18:43,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:18:43,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:18:43,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:18:43,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:18:43,137 INFO L87 Difference]: Start difference. First operand 4397 states and 15887 transitions. Second operand has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:48,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:18:48,105 INFO L93 Difference]: Finished difference Result 10822 states and 34699 transitions. [2022-01-18 07:18:48,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2022-01-18 07:18:48,105 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:18:48,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:18:48,125 INFO L225 Difference]: With dead ends: 10822 [2022-01-18 07:18:48,125 INFO L226 Difference]: Without dead ends: 10443 [2022-01-18 07:18:48,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21050 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5773, Invalid=45529, Unknown=0, NotChecked=0, Total=51302 [2022-01-18 07:18:48,129 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 719 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 770 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 07:18:48,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 1175 Invalid, 3388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2471 Invalid, 0 Unknown, 770 Unchecked, 1.0s Time] [2022-01-18 07:18:48,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10443 states. [2022-01-18 07:18:48,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10443 to 4539. [2022-01-18 07:18:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4539 states, 4538 states have (on average 3.626707800793301) internal successors, (16458), 4538 states have internal predecessors, (16458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4539 states to 4539 states and 16458 transitions. [2022-01-18 07:18:48,269 INFO L78 Accepts]: Start accepts. Automaton has 4539 states and 16458 transitions. Word has length 30 [2022-01-18 07:18:48,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:18:48,269 INFO L470 AbstractCegarLoop]: Abstraction has 4539 states and 16458 transitions. [2022-01-18 07:18:48,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:48,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4539 states and 16458 transitions. [2022-01-18 07:18:48,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:18:48,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:18:48,276 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:18:48,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-01-18 07:18:48,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-01-18 07:18:48,483 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:18:48,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:18:48,483 INFO L85 PathProgramCache]: Analyzing trace with hash -26538439, now seen corresponding path program 25 times [2022-01-18 07:18:48,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:18:48,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422415969] [2022-01-18 07:18:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:18:48,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:18:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:48,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:18:48,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422415969] [2022-01-18 07:18:48,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422415969] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:18:48,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788469687] [2022-01-18 07:18:48,534 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:18:48,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:48,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:18:48,535 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:18:48,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 07:18:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:48,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:18:48,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:18:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:48,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:18:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:48,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788469687] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:18:48,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:18:48,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 19 [2022-01-18 07:18:48,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076649682] [2022-01-18 07:18:48,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:18:48,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:18:48,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:18:48,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:18:48,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:18:48,784 INFO L87 Difference]: Start difference. First operand 4539 states and 16458 transitions. Second operand has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:50,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:18:50,696 INFO L93 Difference]: Finished difference Result 11273 states and 35289 transitions. [2022-01-18 07:18:50,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-18 07:18:50,696 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:18:50,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:18:50,718 INFO L225 Difference]: With dead ends: 11273 [2022-01-18 07:18:50,718 INFO L226 Difference]: Without dead ends: 11273 [2022-01-18 07:18:50,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7163 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3292, Invalid=14264, Unknown=0, NotChecked=0, Total=17556 [2022-01-18 07:18:50,720 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 583 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:18:50,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 566 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:18:50,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11273 states. [2022-01-18 07:18:50,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11273 to 4555. [2022-01-18 07:18:50,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4555 states, 4554 states have (on average 3.6280193236714977) internal successors, (16522), 4554 states have internal predecessors, (16522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:50,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4555 states to 4555 states and 16522 transitions. [2022-01-18 07:18:50,892 INFO L78 Accepts]: Start accepts. Automaton has 4555 states and 16522 transitions. Word has length 30 [2022-01-18 07:18:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:18:50,892 INFO L470 AbstractCegarLoop]: Abstraction has 4555 states and 16522 transitions. [2022-01-18 07:18:50,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4555 states and 16522 transitions. [2022-01-18 07:18:50,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:18:50,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:18:50,899 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:18:50,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-01-18 07:18:51,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:51,099 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:18:51,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:18:51,100 INFO L85 PathProgramCache]: Analyzing trace with hash 832947317, now seen corresponding path program 26 times [2022-01-18 07:18:51,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:18:51,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465008828] [2022-01-18 07:18:51,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:18:51,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:18:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:51,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:18:51,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465008828] [2022-01-18 07:18:51,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465008828] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:18:51,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741370633] [2022-01-18 07:18:51,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:18:51,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:51,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:18:51,156 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:18:51,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 07:18:51,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:18:51,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:18:51,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:18:51,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:18:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:51,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:18:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:51,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741370633] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:18:51,439 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:18:51,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2022-01-18 07:18:51,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939275477] [2022-01-18 07:18:51,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:18:51,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:18:51,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:18:51,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:18:51,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:18:51,440 INFO L87 Difference]: Start difference. First operand 4555 states and 16522 transitions. Second operand has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 07:18:54,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:18:54,351 INFO L93 Difference]: Finished difference Result 12074 states and 37513 transitions. [2022-01-18 07:18:54,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-01-18 07:18:54,352 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 30 [2022-01-18 07:18:54,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:18:54,375 INFO L225 Difference]: With dead ends: 12074 [2022-01-18 07:18:54,375 INFO L226 Difference]: Without dead ends: 12074 [2022-01-18 07:18:54,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15940 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5934, Invalid=30356, Unknown=0, NotChecked=0, Total=36290 [2022-01-18 07:18:54,378 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 710 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:18:54,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 660 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:18:54,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12074 states. [2022-01-18 07:18:54,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12074 to 4635. [2022-01-18 07:18:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4635 states, 4634 states have (on average 3.622356495468278) internal successors, (16786), 4634 states have internal predecessors, (16786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:54,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4635 states to 4635 states and 16786 transitions. [2022-01-18 07:18:54,524 INFO L78 Accepts]: Start accepts. Automaton has 4635 states and 16786 transitions. Word has length 30 [2022-01-18 07:18:54,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:18:54,524 INFO L470 AbstractCegarLoop]: Abstraction has 4635 states and 16786 transitions. [2022-01-18 07:18:54,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 07:18:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 4635 states and 16786 transitions. [2022-01-18 07:18:54,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:18:54,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:18:54,531 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:18:54,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-01-18 07:18:54,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-01-18 07:18:54,731 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:18:54,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:18:54,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1958548217, now seen corresponding path program 27 times [2022-01-18 07:18:54,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:18:54,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246400679] [2022-01-18 07:18:54,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:18:54,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:18:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:54,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:18:54,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246400679] [2022-01-18 07:18:54,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246400679] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:18:54,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144280305] [2022-01-18 07:18:54,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:18:54,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:54,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:18:54,775 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:18:54,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 07:18:54,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 07:18:54,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:18:54,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:18:54,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:18:54,970 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:54,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:18:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:55,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144280305] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:18:55,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:18:55,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2022-01-18 07:18:55,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863641572] [2022-01-18 07:18:55,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:18:55,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:18:55,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:18:55,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:18:55,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:18:55,077 INFO L87 Difference]: Start difference. First operand 4635 states and 16786 transitions. Second operand has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 07:18:57,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:18:57,296 INFO L93 Difference]: Finished difference Result 11138 states and 35112 transitions. [2022-01-18 07:18:57,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-01-18 07:18:57,297 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 30 [2022-01-18 07:18:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:18:57,317 INFO L225 Difference]: With dead ends: 11138 [2022-01-18 07:18:57,317 INFO L226 Difference]: Without dead ends: 11130 [2022-01-18 07:18:57,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9403 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4289, Invalid=18361, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 07:18:57,320 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 622 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:18:57,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 606 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:18:57,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11130 states. [2022-01-18 07:18:57,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11130 to 4567. [2022-01-18 07:18:57,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4567 states, 4566 states have (on average 3.6151992991677617) internal successors, (16507), 4566 states have internal predecessors, (16507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:18:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4567 states to 4567 states and 16507 transitions. [2022-01-18 07:18:57,444 INFO L78 Accepts]: Start accepts. Automaton has 4567 states and 16507 transitions. Word has length 30 [2022-01-18 07:18:57,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:18:57,444 INFO L470 AbstractCegarLoop]: Abstraction has 4567 states and 16507 transitions. [2022-01-18 07:18:57,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 07:18:57,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4567 states and 16507 transitions. [2022-01-18 07:18:57,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:18:57,451 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:18:57,451 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:18:57,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-01-18 07:18:57,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-01-18 07:18:57,666 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:18:57,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:18:57,666 INFO L85 PathProgramCache]: Analyzing trace with hash -713124495, now seen corresponding path program 28 times [2022-01-18 07:18:57,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:18:57,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257729585] [2022-01-18 07:18:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:18:57,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:18:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:18:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:57,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:18:57,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257729585] [2022-01-18 07:18:57,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257729585] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:18:57,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743215345] [2022-01-18 07:18:57,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:18:57,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:18:57,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:18:57,726 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:18:57,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 07:18:57,761 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:18:57,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:18:57,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:18:57,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:18:57,944 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:57,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:18:58,053 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:18:58,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743215345] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:18:58,053 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:18:58,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2022-01-18 07:18:58,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175568660] [2022-01-18 07:18:58,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:18:58,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:18:58,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:18:58,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:18:58,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:18:58,054 INFO L87 Difference]: Start difference. First operand 4567 states and 16507 transitions. Second operand has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 07:19:00,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:00,089 INFO L93 Difference]: Finished difference Result 12349 states and 38953 transitions. [2022-01-18 07:19:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-01-18 07:19:00,090 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 30 [2022-01-18 07:19:00,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:00,113 INFO L225 Difference]: With dead ends: 12349 [2022-01-18 07:19:00,113 INFO L226 Difference]: Without dead ends: 12349 [2022-01-18 07:19:00,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8011 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=4044, Invalid=15138, Unknown=0, NotChecked=0, Total=19182 [2022-01-18 07:19:00,116 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 768 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:00,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 519 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:19:00,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12349 states. [2022-01-18 07:19:00,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12349 to 4699. [2022-01-18 07:19:00,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4699 states, 4698 states have (on average 3.62281822051937) internal successors, (17020), 4698 states have internal predecessors, (17020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:00,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4699 states to 4699 states and 17020 transitions. [2022-01-18 07:19:00,259 INFO L78 Accepts]: Start accepts. Automaton has 4699 states and 17020 transitions. Word has length 30 [2022-01-18 07:19:00,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:00,259 INFO L470 AbstractCegarLoop]: Abstraction has 4699 states and 17020 transitions. [2022-01-18 07:19:00,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 07:19:00,259 INFO L276 IsEmpty]: Start isEmpty. Operand 4699 states and 17020 transitions. [2022-01-18 07:19:00,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:00,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:00,266 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:00,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-01-18 07:19:00,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:00,481 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:00,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:00,481 INFO L85 PathProgramCache]: Analyzing trace with hash 412476405, now seen corresponding path program 29 times [2022-01-18 07:19:00,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:00,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052862820] [2022-01-18 07:19:00,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:00,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:00,543 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:00,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:00,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052862820] [2022-01-18 07:19:00,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052862820] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:00,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792797479] [2022-01-18 07:19:00,543 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:19:00,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:00,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:00,544 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:00,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 07:19:00,597 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 07:19:00,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:00,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:00,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:00,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:00,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792797479] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:00,826 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:00,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2022-01-18 07:19:00,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691332714] [2022-01-18 07:19:00,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:00,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:19:00,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:00,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:19:00,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:19:00,827 INFO L87 Difference]: Start difference. First operand 4699 states and 17020 transitions. Second operand has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 07:19:03,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:03,239 INFO L93 Difference]: Finished difference Result 12269 states and 38987 transitions. [2022-01-18 07:19:03,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-18 07:19:03,239 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 30 [2022-01-18 07:19:03,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:03,263 INFO L225 Difference]: With dead ends: 12269 [2022-01-18 07:19:03,263 INFO L226 Difference]: Without dead ends: 12257 [2022-01-18 07:19:03,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10010 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4896, Invalid=19284, Unknown=0, NotChecked=0, Total=24180 [2022-01-18 07:19:03,266 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 713 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:03,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 516 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1847 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:19:03,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12257 states. [2022-01-18 07:19:03,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12257 to 4581. [2022-01-18 07:19:03,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4581 states, 4580 states have (on average 3.622052401746725) internal successors, (16589), 4580 states have internal predecessors, (16589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 16589 transitions. [2022-01-18 07:19:03,442 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 16589 transitions. Word has length 30 [2022-01-18 07:19:03,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:03,442 INFO L470 AbstractCegarLoop]: Abstraction has 4581 states and 16589 transitions. [2022-01-18 07:19:03,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 07:19:03,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 16589 transitions. [2022-01-18 07:19:03,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:03,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:03,449 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:03,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-01-18 07:19:03,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:03,651 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:03,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:03,652 INFO L85 PathProgramCache]: Analyzing trace with hash -917258635, now seen corresponding path program 30 times [2022-01-18 07:19:03,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:03,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018804624] [2022-01-18 07:19:03,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:03,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:03,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:03,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018804624] [2022-01-18 07:19:03,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018804624] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:03,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223302078] [2022-01-18 07:19:03,705 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:19:03,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:03,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:03,706 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:03,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 07:19:03,742 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:19:03,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:03,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:03,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:03,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:03,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223302078] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:03,955 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:03,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2022-01-18 07:19:03,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634469581] [2022-01-18 07:19:03,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:03,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:19:03,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:03,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:19:03,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:19:03,956 INFO L87 Difference]: Start difference. First operand 4581 states and 16589 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:06,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:06,131 INFO L93 Difference]: Finished difference Result 13308 states and 42483 transitions. [2022-01-18 07:19:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-01-18 07:19:06,131 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:19:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:06,159 INFO L225 Difference]: With dead ends: 13308 [2022-01-18 07:19:06,159 INFO L226 Difference]: Without dead ends: 13308 [2022-01-18 07:19:06,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10097 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4756, Invalid=18500, Unknown=0, NotChecked=0, Total=23256 [2022-01-18 07:19:06,162 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 927 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:06,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 513 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:19:06,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13308 states. [2022-01-18 07:19:06,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13308 to 4586. [2022-01-18 07:19:06,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4586 states, 4585 states have (on average 3.6272628135223557) internal successors, (16631), 4585 states have internal predecessors, (16631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4586 states to 4586 states and 16631 transitions. [2022-01-18 07:19:06,332 INFO L78 Accepts]: Start accepts. Automaton has 4586 states and 16631 transitions. Word has length 30 [2022-01-18 07:19:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:06,332 INFO L470 AbstractCegarLoop]: Abstraction has 4586 states and 16631 transitions. [2022-01-18 07:19:06,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:06,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4586 states and 16631 transitions. [2022-01-18 07:19:06,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:06,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:06,339 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:06,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-01-18 07:19:06,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:06,555 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:06,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:06,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1035516469, now seen corresponding path program 31 times [2022-01-18 07:19:06,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:06,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042047895] [2022-01-18 07:19:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:06,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:06,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:06,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042047895] [2022-01-18 07:19:06,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042047895] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:06,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136394751] [2022-01-18 07:19:06,589 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:19:06,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:06,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:06,590 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:06,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 07:19:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:06,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:06,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:06,740 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:06,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:06,870 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:06,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136394751] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:06,870 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:06,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2022-01-18 07:19:06,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843105023] [2022-01-18 07:19:06,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:06,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:19:06,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:06,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:19:06,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:19:06,871 INFO L87 Difference]: Start difference. First operand 4586 states and 16631 transitions. Second operand has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 07:19:09,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:09,678 INFO L93 Difference]: Finished difference Result 14837 states and 46985 transitions. [2022-01-18 07:19:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2022-01-18 07:19:09,679 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 30 [2022-01-18 07:19:09,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:09,709 INFO L225 Difference]: With dead ends: 14837 [2022-01-18 07:19:09,709 INFO L226 Difference]: Without dead ends: 14837 [2022-01-18 07:19:09,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14666 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=6595, Invalid=26347, Unknown=0, NotChecked=0, Total=32942 [2022-01-18 07:19:09,711 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 856 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:09,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 509 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:19:09,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14837 states. [2022-01-18 07:19:09,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14837 to 4565. [2022-01-18 07:19:09,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4565 states, 4564 states have (on average 3.618755477651183) internal successors, (16516), 4564 states have internal predecessors, (16516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 16516 transitions. [2022-01-18 07:19:09,871 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 16516 transitions. Word has length 30 [2022-01-18 07:19:09,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:09,871 INFO L470 AbstractCegarLoop]: Abstraction has 4565 states and 16516 transitions. [2022-01-18 07:19:09,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 07:19:09,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 16516 transitions. [2022-01-18 07:19:09,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:09,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:09,878 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:09,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-01-18 07:19:10,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-01-18 07:19:10,079 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:10,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:10,079 INFO L85 PathProgramCache]: Analyzing trace with hash -863850567, now seen corresponding path program 32 times [2022-01-18 07:19:10,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:10,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687929986] [2022-01-18 07:19:10,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:10,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:10,118 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:10,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:10,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687929986] [2022-01-18 07:19:10,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687929986] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:10,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359384797] [2022-01-18 07:19:10,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:19:10,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:10,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:10,120 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:10,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 07:19:10,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:19:10,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:10,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:10,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:10,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:10,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359384797] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:10,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:10,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 19 [2022-01-18 07:19:10,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037039887] [2022-01-18 07:19:10,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:10,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:19:10,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:19:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:19:10,341 INFO L87 Difference]: Start difference. First operand 4565 states and 16516 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:11,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:11,844 INFO L93 Difference]: Finished difference Result 12793 states and 40356 transitions. [2022-01-18 07:19:11,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-01-18 07:19:11,844 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:19:11,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:11,867 INFO L225 Difference]: With dead ends: 12793 [2022-01-18 07:19:11,867 INFO L226 Difference]: Without dead ends: 12785 [2022-01-18 07:19:11,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4715 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2810, Invalid=9180, Unknown=0, NotChecked=0, Total=11990 [2022-01-18 07:19:11,868 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 690 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:11,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 375 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:19:11,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12785 states. [2022-01-18 07:19:11,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12785 to 4571. [2022-01-18 07:19:11,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4571 states, 4570 states have (on average 3.6185995623632383) internal successors, (16537), 4570 states have internal predecessors, (16537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:11,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4571 states to 4571 states and 16537 transitions. [2022-01-18 07:19:11,995 INFO L78 Accepts]: Start accepts. Automaton has 4571 states and 16537 transitions. Word has length 30 [2022-01-18 07:19:11,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:11,995 INFO L470 AbstractCegarLoop]: Abstraction has 4571 states and 16537 transitions. [2022-01-18 07:19:11,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:11,996 INFO L276 IsEmpty]: Start isEmpty. Operand 4571 states and 16537 transitions. [2022-01-18 07:19:12,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:12,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:12,002 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:12,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-01-18 07:19:12,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-18 07:19:12,202 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:12,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:12,203 INFO L85 PathProgramCache]: Analyzing trace with hash -593340875, now seen corresponding path program 33 times [2022-01-18 07:19:12,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:12,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630497427] [2022-01-18 07:19:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:12,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:12,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:12,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630497427] [2022-01-18 07:19:12,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630497427] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:12,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360662948] [2022-01-18 07:19:12,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:19:12,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:12,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:12,244 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:12,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 07:19:12,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 07:19:12,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:12,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:12,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:12,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:12,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360662948] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:12,476 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:12,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 19 [2022-01-18 07:19:12,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574722073] [2022-01-18 07:19:12,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:12,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:19:12,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:12,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:19:12,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:19:12,477 INFO L87 Difference]: Start difference. First operand 4571 states and 16537 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:14,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:14,122 INFO L93 Difference]: Finished difference Result 13274 states and 41550 transitions. [2022-01-18 07:19:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-18 07:19:14,122 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:19:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:14,149 INFO L225 Difference]: With dead ends: 13274 [2022-01-18 07:19:14,149 INFO L226 Difference]: Without dead ends: 13274 [2022-01-18 07:19:14,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5819 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3140, Invalid=10666, Unknown=0, NotChecked=0, Total=13806 [2022-01-18 07:19:14,151 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 683 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:14,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 552 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:19:14,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13274 states. [2022-01-18 07:19:14,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13274 to 4399. [2022-01-18 07:19:14,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4399 states, 4398 states have (on average 3.575943610732151) internal successors, (15727), 4398 states have internal predecessors, (15727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:14,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 15727 transitions. [2022-01-18 07:19:14,314 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 15727 transitions. Word has length 30 [2022-01-18 07:19:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:14,314 INFO L470 AbstractCegarLoop]: Abstraction has 4399 states and 15727 transitions. [2022-01-18 07:19:14,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:14,314 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 15727 transitions. [2022-01-18 07:19:14,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:14,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:14,320 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:14,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-01-18 07:19:14,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:14,520 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:14,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:14,521 INFO L85 PathProgramCache]: Analyzing trace with hash -789534161, now seen corresponding path program 34 times [2022-01-18 07:19:14,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:14,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111931333] [2022-01-18 07:19:14,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:14,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 07:19:14,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:14,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111931333] [2022-01-18 07:19:14,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111931333] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:14,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173654639] [2022-01-18 07:19:14,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:19:14,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:14,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:14,550 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:14,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 07:19:14,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:19:14,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:14,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:19:14,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 07:19:14,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:19:14,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173654639] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:14,741 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:14,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 8] total 13 [2022-01-18 07:19:14,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716964821] [2022-01-18 07:19:14,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:14,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:19:14,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:14,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:19:14,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:19:14,741 INFO L87 Difference]: Start difference. First operand 4399 states and 15727 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:15,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:15,006 INFO L93 Difference]: Finished difference Result 6449 states and 21322 transitions. [2022-01-18 07:19:15,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 07:19:15,006 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:19:15,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:15,018 INFO L225 Difference]: With dead ends: 6449 [2022-01-18 07:19:15,019 INFO L226 Difference]: Without dead ends: 6449 [2022-01-18 07:19:15,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=483, Unknown=0, NotChecked=0, Total=756 [2022-01-18 07:19:15,019 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 302 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:15,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 84 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:19:15,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6449 states. [2022-01-18 07:19:15,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6449 to 4316. [2022-01-18 07:19:15,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4316 states, 4315 states have (on average 3.5606025492468136) internal successors, (15364), 4315 states have internal predecessors, (15364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:15,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4316 states to 4316 states and 15364 transitions. [2022-01-18 07:19:15,093 INFO L78 Accepts]: Start accepts. Automaton has 4316 states and 15364 transitions. Word has length 30 [2022-01-18 07:19:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:15,093 INFO L470 AbstractCegarLoop]: Abstraction has 4316 states and 15364 transitions. [2022-01-18 07:19:15,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 4316 states and 15364 transitions. [2022-01-18 07:19:15,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:15,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:15,099 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:15,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-01-18 07:19:15,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:15,300 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:15,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:15,300 INFO L85 PathProgramCache]: Analyzing trace with hash -530738837, now seen corresponding path program 35 times [2022-01-18 07:19:15,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:15,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150355] [2022-01-18 07:19:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:15,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:19:15,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:15,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150355] [2022-01-18 07:19:15,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150355] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:15,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285750237] [2022-01-18 07:19:15,340 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:19:15,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:15,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:15,341 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:15,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 07:19:15,380 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:19:15,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:15,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:19:15,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:15,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:15,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285750237] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:15,611 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:15,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 17 [2022-01-18 07:19:15,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394184724] [2022-01-18 07:19:15,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:15,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:19:15,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:15,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:19:15,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:19:15,612 INFO L87 Difference]: Start difference. First operand 4316 states and 15364 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:17,530 INFO L93 Difference]: Finished difference Result 9281 states and 29662 transitions. [2022-01-18 07:19:17,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 07:19:17,530 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:19:17,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:17,546 INFO L225 Difference]: With dead ends: 9281 [2022-01-18 07:19:17,546 INFO L226 Difference]: Without dead ends: 9227 [2022-01-18 07:19:17,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4351 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2944, Invalid=8612, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 07:19:17,547 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 551 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:17,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 353 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:19:17,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9227 states. [2022-01-18 07:19:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9227 to 4444. [2022-01-18 07:19:17,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4444 states, 4443 states have (on average 3.5941931127616473) internal successors, (15969), 4443 states have internal predecessors, (15969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:17,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4444 states to 4444 states and 15969 transitions. [2022-01-18 07:19:17,642 INFO L78 Accepts]: Start accepts. Automaton has 4444 states and 15969 transitions. Word has length 30 [2022-01-18 07:19:17,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:17,642 INFO L470 AbstractCegarLoop]: Abstraction has 4444 states and 15969 transitions. [2022-01-18 07:19:17,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:17,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4444 states and 15969 transitions. [2022-01-18 07:19:17,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:17,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:17,649 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:17,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-01-18 07:19:17,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:17,851 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:17,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash 379456291, now seen corresponding path program 36 times [2022-01-18 07:19:17,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:17,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975423552] [2022-01-18 07:19:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:17,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:17,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:17,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975423552] [2022-01-18 07:19:17,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975423552] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:17,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153793559] [2022-01-18 07:19:17,893 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:19:17,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:17,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:17,894 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:17,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 07:19:17,932 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:19:17,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:17,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 07:19:17,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:18,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:19:18,154 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:19:18,154 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:19:18,218 INFO L353 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2022-01-18 07:19:18,218 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:19:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:19:18,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:18,731 INFO L353 Elim1Store]: treesize reduction 15, result has 69.4 percent of original size [2022-01-18 07:19:18,731 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 48 [2022-01-18 07:19:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:19:19,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153793559] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:19,056 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:19,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 33 [2022-01-18 07:19:19,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780305057] [2022-01-18 07:19:19,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:19,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 07:19:19,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:19,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 07:19:19,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=907, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 07:19:19,057 INFO L87 Difference]: Start difference. First operand 4444 states and 15969 transitions. Second operand has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:28,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:28,226 INFO L93 Difference]: Finished difference Result 14335 states and 45796 transitions. [2022-01-18 07:19:28,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2022-01-18 07:19:28,226 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:19:28,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:28,254 INFO L225 Difference]: With dead ends: 14335 [2022-01-18 07:19:28,255 INFO L226 Difference]: Without dead ends: 13974 [2022-01-18 07:19:28,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 63 SyntacticMatches, 7 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27978 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=7316, Invalid=60024, Unknown=0, NotChecked=0, Total=67340 [2022-01-18 07:19:28,259 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 1151 mSDsluCounter, 2735 mSDsCounter, 0 mSdLazyCounter, 3142 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 5235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 3142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1764 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:28,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 1573 Invalid, 5235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 3142 Invalid, 0 Unknown, 1764 Unchecked, 1.4s Time] [2022-01-18 07:19:28,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13974 states. [2022-01-18 07:19:28,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13974 to 5310. [2022-01-18 07:19:28,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5310 states, 5309 states have (on average 3.643435675268412) internal successors, (19343), 5309 states have internal predecessors, (19343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5310 states to 5310 states and 19343 transitions. [2022-01-18 07:19:28,434 INFO L78 Accepts]: Start accepts. Automaton has 5310 states and 19343 transitions. Word has length 30 [2022-01-18 07:19:28,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:28,434 INFO L470 AbstractCegarLoop]: Abstraction has 5310 states and 19343 transitions. [2022-01-18 07:19:28,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand 5310 states and 19343 transitions. [2022-01-18 07:19:28,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:28,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:28,442 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:28,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-01-18 07:19:28,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:28,643 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:28,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:28,643 INFO L85 PathProgramCache]: Analyzing trace with hash 733452651, now seen corresponding path program 37 times [2022-01-18 07:19:28,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:28,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320052826] [2022-01-18 07:19:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:28,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:28,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:28,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320052826] [2022-01-18 07:19:28,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320052826] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:28,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587532237] [2022-01-18 07:19:28,675 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:19:28,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:28,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:28,679 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:28,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 07:19:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:28,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:19:28,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:28,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:28,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587532237] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:28,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:28,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-01-18 07:19:28,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260176559] [2022-01-18 07:19:28,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:28,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:19:28,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:28,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:19:28,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:19:28,885 INFO L87 Difference]: Start difference. First operand 5310 states and 19343 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:29,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:29,089 INFO L93 Difference]: Finished difference Result 7739 states and 26954 transitions. [2022-01-18 07:19:29,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 07:19:29,089 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:19:29,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:29,103 INFO L225 Difference]: With dead ends: 7739 [2022-01-18 07:19:29,103 INFO L226 Difference]: Without dead ends: 7413 [2022-01-18 07:19:29,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:19:29,104 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 266 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:29,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 64 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:19:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7413 states. [2022-01-18 07:19:29,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 5670. [2022-01-18 07:19:29,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5670 states, 5669 states have (on average 3.7110601517022404) internal successors, (21038), 5669 states have internal predecessors, (21038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:29,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 21038 transitions. [2022-01-18 07:19:29,206 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 21038 transitions. Word has length 30 [2022-01-18 07:19:29,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:29,206 INFO L470 AbstractCegarLoop]: Abstraction has 5670 states and 21038 transitions. [2022-01-18 07:19:29,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:29,206 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 21038 transitions. [2022-01-18 07:19:29,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:29,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:29,215 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:29,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-01-18 07:19:29,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-01-18 07:19:29,415 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:29,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:29,416 INFO L85 PathProgramCache]: Analyzing trace with hash -556252441, now seen corresponding path program 38 times [2022-01-18 07:19:29,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:29,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431626185] [2022-01-18 07:19:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:29,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:19:29,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:29,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431626185] [2022-01-18 07:19:29,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431626185] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:29,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050071549] [2022-01-18 07:19:29,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:19:29,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:29,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:29,453 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:29,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 07:19:29,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:19:29,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:29,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:19:29,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:29,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:29,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 07:19:29,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050071549] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:29,703 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:29,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 17 [2022-01-18 07:19:29,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98976] [2022-01-18 07:19:29,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:29,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:19:29,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:29,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:19:29,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:19:29,704 INFO L87 Difference]: Start difference. First operand 5670 states and 21038 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:30,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:30,620 INFO L93 Difference]: Finished difference Result 9916 states and 33870 transitions. [2022-01-18 07:19:30,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 07:19:30,621 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:19:30,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:30,640 INFO L225 Difference]: With dead ends: 9916 [2022-01-18 07:19:30,640 INFO L226 Difference]: Without dead ends: 9842 [2022-01-18 07:19:30,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1212, Invalid=3210, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 07:19:30,641 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 356 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:30,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 261 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:19:30,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9842 states. [2022-01-18 07:19:30,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9842 to 6192. [2022-01-18 07:19:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 6191 states have (on average 3.7491519948312066) internal successors, (23211), 6191 states have internal predecessors, (23211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:30,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 23211 transitions. [2022-01-18 07:19:30,791 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 23211 transitions. Word has length 30 [2022-01-18 07:19:30,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:30,791 INFO L470 AbstractCegarLoop]: Abstraction has 6192 states and 23211 transitions. [2022-01-18 07:19:30,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:30,791 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 23211 transitions. [2022-01-18 07:19:30,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:30,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:30,802 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:30,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-01-18 07:19:31,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:31,002 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:31,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:31,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1934026897, now seen corresponding path program 39 times [2022-01-18 07:19:31,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:31,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756795972] [2022-01-18 07:19:31,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:31,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:31,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:31,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756795972] [2022-01-18 07:19:31,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756795972] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:31,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761801550] [2022-01-18 07:19:31,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:19:31,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:31,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:31,039 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:31,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 07:19:31,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:19:31,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:31,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:19:31,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:31,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:19:31,308 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:19:31,308 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:19:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 07:19:31,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:31,491 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:19:31,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:19:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 07:19:31,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761801550] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:31,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:31,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-01-18 07:19:31,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870841860] [2022-01-18 07:19:31,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:31,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 07:19:31,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:31,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 07:19:31,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:19:31,640 INFO L87 Difference]: Start difference. First operand 6192 states and 23211 transitions. Second operand has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 23 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:32,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:32,987 INFO L93 Difference]: Finished difference Result 14134 states and 49084 transitions. [2022-01-18 07:19:32,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 07:19:32,988 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 23 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:19:32,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:33,018 INFO L225 Difference]: With dead ends: 14134 [2022-01-18 07:19:33,018 INFO L226 Difference]: Without dead ends: 13763 [2022-01-18 07:19:33,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=924, Invalid=5082, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 07:19:33,019 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 353 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 981 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:33,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 801 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1225 Invalid, 0 Unknown, 981 Unchecked, 0.5s Time] [2022-01-18 07:19:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13763 states. [2022-01-18 07:19:33,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13763 to 8244. [2022-01-18 07:19:33,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8244 states, 8243 states have (on average 3.843018318573335) internal successors, (31678), 8243 states have internal predecessors, (31678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:33,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8244 states to 8244 states and 31678 transitions. [2022-01-18 07:19:33,230 INFO L78 Accepts]: Start accepts. Automaton has 8244 states and 31678 transitions. Word has length 30 [2022-01-18 07:19:33,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:33,231 INFO L470 AbstractCegarLoop]: Abstraction has 8244 states and 31678 transitions. [2022-01-18 07:19:33,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 23 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:33,231 INFO L276 IsEmpty]: Start isEmpty. Operand 8244 states and 31678 transitions. [2022-01-18 07:19:33,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:33,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:33,245 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:33,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-01-18 07:19:33,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-01-18 07:19:33,445 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:33,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:33,446 INFO L85 PathProgramCache]: Analyzing trace with hash 109854575, now seen corresponding path program 40 times [2022-01-18 07:19:33,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:33,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185793938] [2022-01-18 07:19:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:33,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:33,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:33,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185793938] [2022-01-18 07:19:33,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185793938] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:33,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096659333] [2022-01-18 07:19:33,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:19:33,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:33,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:33,492 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:33,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 07:19:33,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:19:33,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:33,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:33,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:19:33,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:33,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096659333] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:33,690 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:33,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 16 [2022-01-18 07:19:33,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776276317] [2022-01-18 07:19:33,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:33,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:19:33,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:33,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:19:33,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:19:33,691 INFO L87 Difference]: Start difference. First operand 8244 states and 31678 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:34,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:34,616 INFO L93 Difference]: Finished difference Result 15792 states and 55324 transitions. [2022-01-18 07:19:34,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 07:19:34,616 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:19:34,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:34,651 INFO L225 Difference]: With dead ends: 15792 [2022-01-18 07:19:34,651 INFO L226 Difference]: Without dead ends: 15792 [2022-01-18 07:19:34,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2049 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1285, Invalid=4117, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 07:19:34,652 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 448 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:34,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 391 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:19:34,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15792 states. [2022-01-18 07:19:34,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15792 to 8160. [2022-01-18 07:19:34,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8160 states, 8159 states have (on average 3.8534134085059444) internal successors, (31440), 8159 states have internal predecessors, (31440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:34,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8160 states to 8160 states and 31440 transitions. [2022-01-18 07:19:34,934 INFO L78 Accepts]: Start accepts. Automaton has 8160 states and 31440 transitions. Word has length 30 [2022-01-18 07:19:34,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:34,935 INFO L470 AbstractCegarLoop]: Abstraction has 8160 states and 31440 transitions. [2022-01-18 07:19:34,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:34,935 INFO L276 IsEmpty]: Start isEmpty. Operand 8160 states and 31440 transitions. [2022-01-18 07:19:34,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:34,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:34,948 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:34,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-01-18 07:19:35,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-01-18 07:19:35,149 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:35,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:35,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1583886883, now seen corresponding path program 41 times [2022-01-18 07:19:35,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:35,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054968319] [2022-01-18 07:19:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:35,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:35,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:35,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054968319] [2022-01-18 07:19:35,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054968319] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:35,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909241560] [2022-01-18 07:19:35,205 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:19:35,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:35,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:35,205 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:35,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 07:19:35,251 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:19:35,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:35,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:35,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:35,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:35,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:35,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909241560] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:35,473 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:35,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 07:19:35,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870453320] [2022-01-18 07:19:35,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:35,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:19:35,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:35,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:19:35,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:19:35,474 INFO L87 Difference]: Start difference. First operand 8160 states and 31440 transitions. Second operand has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 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 07:19:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:37,930 INFO L93 Difference]: Finished difference Result 16864 states and 57485 transitions. [2022-01-18 07:19:37,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-01-18 07:19:37,930 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 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 30 [2022-01-18 07:19:37,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:37,967 INFO L225 Difference]: With dead ends: 16864 [2022-01-18 07:19:37,967 INFO L226 Difference]: Without dead ends: 16864 [2022-01-18 07:19:37,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9186 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3892, Invalid=18458, Unknown=0, NotChecked=0, Total=22350 [2022-01-18 07:19:37,970 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 582 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:37,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 787 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:19:37,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16864 states. [2022-01-18 07:19:38,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16864 to 8404. [2022-01-18 07:19:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8404 states, 8403 states have (on average 3.835534928001904) internal successors, (32230), 8403 states have internal predecessors, (32230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8404 states to 8404 states and 32230 transitions. [2022-01-18 07:19:38,263 INFO L78 Accepts]: Start accepts. Automaton has 8404 states and 32230 transitions. Word has length 30 [2022-01-18 07:19:38,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:38,264 INFO L470 AbstractCegarLoop]: Abstraction has 8404 states and 32230 transitions. [2022-01-18 07:19:38,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 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 07:19:38,264 INFO L276 IsEmpty]: Start isEmpty. Operand 8404 states and 32230 transitions. [2022-01-18 07:19:38,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:38,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:38,277 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:38,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-01-18 07:19:38,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-01-18 07:19:38,478 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:38,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:38,478 INFO L85 PathProgramCache]: Analyzing trace with hash 528509489, now seen corresponding path program 42 times [2022-01-18 07:19:38,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:38,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700057889] [2022-01-18 07:19:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:38,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:19:38,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:38,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700057889] [2022-01-18 07:19:38,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700057889] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:38,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402864613] [2022-01-18 07:19:38,524 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:19:38,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:38,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:38,525 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:38,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 07:19:38,577 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:19:38,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:38,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:38,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:19:38,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:38,800 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:38,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402864613] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:38,800 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:38,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 07:19:38,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174951902] [2022-01-18 07:19:38,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:38,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:19:38,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:38,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:19:38,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:19:38,801 INFO L87 Difference]: Start difference. First operand 8404 states and 32230 transitions. Second operand has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 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 07:19:40,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:40,510 INFO L93 Difference]: Finished difference Result 15651 states and 54475 transitions. [2022-01-18 07:19:40,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-18 07:19:40,511 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 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 30 [2022-01-18 07:19:40,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:40,545 INFO L225 Difference]: With dead ends: 15651 [2022-01-18 07:19:40,545 INFO L226 Difference]: Without dead ends: 15643 [2022-01-18 07:19:40,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5719 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2883, Invalid=11879, Unknown=0, NotChecked=0, Total=14762 [2022-01-18 07:19:40,547 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 603 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:40,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 479 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:19:40,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15643 states. [2022-01-18 07:19:40,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15643 to 8342. [2022-01-18 07:19:40,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8342 states, 8341 states have (on average 3.8394676897254527) internal successors, (32025), 8341 states have internal predecessors, (32025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 32025 transitions. [2022-01-18 07:19:40,782 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 32025 transitions. Word has length 30 [2022-01-18 07:19:40,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:40,782 INFO L470 AbstractCegarLoop]: Abstraction has 8342 states and 32025 transitions. [2022-01-18 07:19:40,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 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 07:19:40,782 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 32025 transitions. [2022-01-18 07:19:40,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:40,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:40,796 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:40,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-01-18 07:19:40,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-18 07:19:40,999 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:40,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:40,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2011644427, now seen corresponding path program 43 times [2022-01-18 07:19:41,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:41,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789355410] [2022-01-18 07:19:41,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:41,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:41,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:41,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789355410] [2022-01-18 07:19:41,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789355410] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:41,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405207716] [2022-01-18 07:19:41,073 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:19:41,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:41,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:41,073 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:41,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 07:19:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:41,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:41,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:41,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:41,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:41,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405207716] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:41,305 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:41,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 20 [2022-01-18 07:19:41,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954247139] [2022-01-18 07:19:41,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:41,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:19:41,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:41,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:19:41,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:19:41,306 INFO L87 Difference]: Start difference. First operand 8342 states and 32025 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:42,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:42,975 INFO L93 Difference]: Finished difference Result 15609 states and 54374 transitions. [2022-01-18 07:19:42,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-18 07:19:42,975 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:19:42,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:43,010 INFO L225 Difference]: With dead ends: 15609 [2022-01-18 07:19:43,010 INFO L226 Difference]: Without dead ends: 15585 [2022-01-18 07:19:43,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5313 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2694, Invalid=11112, Unknown=0, NotChecked=0, Total=13806 [2022-01-18 07:19:43,012 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 526 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:43,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 555 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:19:43,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15585 states. [2022-01-18 07:19:43,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15585 to 8434. [2022-01-18 07:19:43,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8434 states, 8433 states have (on average 3.831495316020396) internal successors, (32311), 8433 states have internal predecessors, (32311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8434 states to 8434 states and 32311 transitions. [2022-01-18 07:19:43,244 INFO L78 Accepts]: Start accepts. Automaton has 8434 states and 32311 transitions. Word has length 30 [2022-01-18 07:19:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:43,245 INFO L470 AbstractCegarLoop]: Abstraction has 8434 states and 32311 transitions. [2022-01-18 07:19:43,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:43,245 INFO L276 IsEmpty]: Start isEmpty. Operand 8434 states and 32311 transitions. [2022-01-18 07:19:43,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:43,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:43,259 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:43,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-01-18 07:19:43,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:43,459 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:43,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:43,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1914992093, now seen corresponding path program 44 times [2022-01-18 07:19:43,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:43,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474248806] [2022-01-18 07:19:43,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:43,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:43,502 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:43,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:43,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474248806] [2022-01-18 07:19:43,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474248806] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:43,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416103662] [2022-01-18 07:19:43,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:19:43,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:43,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:43,503 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:43,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 07:19:43,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:19:43,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:43,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:43,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:43,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:43,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416103662] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:43,768 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:43,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-01-18 07:19:43,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271266147] [2022-01-18 07:19:43,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:43,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:19:43,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:43,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:19:43,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:19:43,769 INFO L87 Difference]: Start difference. First operand 8434 states and 32311 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 07:19:46,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:46,149 INFO L93 Difference]: Finished difference Result 20916 states and 72438 transitions. [2022-01-18 07:19:46,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-01-18 07:19:46,149 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 30 [2022-01-18 07:19:46,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:46,197 INFO L225 Difference]: With dead ends: 20916 [2022-01-18 07:19:46,197 INFO L226 Difference]: Without dead ends: 20916 [2022-01-18 07:19:46,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9937 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4752, Invalid=19428, Unknown=0, NotChecked=0, Total=24180 [2022-01-18 07:19:46,200 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 766 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:46,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 615 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:19:46,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20916 states. [2022-01-18 07:19:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20916 to 10611. [2022-01-18 07:19:46,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10611 states, 10610 states have (on average 3.853722902921772) internal successors, (40888), 10610 states have internal predecessors, (40888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:46,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10611 states to 10611 states and 40888 transitions. [2022-01-18 07:19:46,522 INFO L78 Accepts]: Start accepts. Automaton has 10611 states and 40888 transitions. Word has length 30 [2022-01-18 07:19:46,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:46,522 INFO L470 AbstractCegarLoop]: Abstraction has 10611 states and 40888 transitions. [2022-01-18 07:19:46,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 07:19:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 10611 states and 40888 transitions. [2022-01-18 07:19:46,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:46,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:46,540 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:46,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-01-18 07:19:46,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:46,740 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:46,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:46,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1324597809, now seen corresponding path program 45 times [2022-01-18 07:19:46,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:46,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706798877] [2022-01-18 07:19:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:46,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:46,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:46,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706798877] [2022-01-18 07:19:46,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706798877] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:46,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641457573] [2022-01-18 07:19:46,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:19:46,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:46,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:46,783 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:46,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 07:19:46,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:19:46,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:46,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:46,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:46,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:47,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641457573] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:47,073 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:47,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-01-18 07:19:47,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494488280] [2022-01-18 07:19:47,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:47,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:19:47,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:47,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:19:47,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:19:47,074 INFO L87 Difference]: Start difference. First operand 10611 states and 40888 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 07:19:49,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:49,682 INFO L93 Difference]: Finished difference Result 21405 states and 74782 transitions. [2022-01-18 07:19:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-01-18 07:19:49,682 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 30 [2022-01-18 07:19:49,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:49,731 INFO L225 Difference]: With dead ends: 21405 [2022-01-18 07:19:49,732 INFO L226 Difference]: Without dead ends: 21381 [2022-01-18 07:19:49,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12520 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=5919, Invalid=24881, Unknown=0, NotChecked=0, Total=30800 [2022-01-18 07:19:49,735 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1022 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:49,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1022 Valid, 454 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:19:49,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21381 states. [2022-01-18 07:19:50,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21381 to 10491. [2022-01-18 07:19:50,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10491 states, 10490 states have (on average 3.85815061963775) internal successors, (40472), 10490 states have internal predecessors, (40472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:50,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10491 states to 10491 states and 40472 transitions. [2022-01-18 07:19:50,141 INFO L78 Accepts]: Start accepts. Automaton has 10491 states and 40472 transitions. Word has length 30 [2022-01-18 07:19:50,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:50,141 INFO L470 AbstractCegarLoop]: Abstraction has 10491 states and 40472 transitions. [2022-01-18 07:19:50,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 07:19:50,141 INFO L276 IsEmpty]: Start isEmpty. Operand 10491 states and 40472 transitions. [2022-01-18 07:19:50,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:50,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:50,159 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:50,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-01-18 07:19:50,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:50,359 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:50,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:50,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1487234549, now seen corresponding path program 46 times [2022-01-18 07:19:50,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:50,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889229928] [2022-01-18 07:19:50,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:50,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:50,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:50,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889229928] [2022-01-18 07:19:50,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889229928] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:50,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5569370] [2022-01-18 07:19:50,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:19:50,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:50,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:50,414 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:50,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 07:19:50,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:19:50,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:50,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:50,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:50,558 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:50,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:50,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5569370] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:50,667 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:50,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 20 [2022-01-18 07:19:50,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588371110] [2022-01-18 07:19:50,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:50,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:19:50,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:50,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:19:50,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:19:50,668 INFO L87 Difference]: Start difference. First operand 10491 states and 40472 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:52,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:52,910 INFO L93 Difference]: Finished difference Result 20619 states and 72607 transitions. [2022-01-18 07:19:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-18 07:19:52,910 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:19:52,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:52,958 INFO L225 Difference]: With dead ends: 20619 [2022-01-18 07:19:52,959 INFO L226 Difference]: Without dead ends: 20571 [2022-01-18 07:19:52,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8609 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4296, Invalid=17756, Unknown=0, NotChecked=0, Total=22052 [2022-01-18 07:19:52,961 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 753 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:52,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 425 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:19:52,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20571 states. [2022-01-18 07:19:53,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20571 to 10513. [2022-01-18 07:19:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10513 states, 10512 states have (on average 3.8593036529680367) internal successors, (40569), 10512 states have internal predecessors, (40569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10513 states to 10513 states and 40569 transitions. [2022-01-18 07:19:53,342 INFO L78 Accepts]: Start accepts. Automaton has 10513 states and 40569 transitions. Word has length 30 [2022-01-18 07:19:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:53,342 INFO L470 AbstractCegarLoop]: Abstraction has 10513 states and 40569 transitions. [2022-01-18 07:19:53,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:53,342 INFO L276 IsEmpty]: Start isEmpty. Operand 10513 states and 40569 transitions. [2022-01-18 07:19:53,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:53,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:53,359 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:53,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-01-18 07:19:53,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-01-18 07:19:53,560 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:53,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:53,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1003077941, now seen corresponding path program 47 times [2022-01-18 07:19:53,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:53,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999498488] [2022-01-18 07:19:53,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:53,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:53,608 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:53,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:53,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999498488] [2022-01-18 07:19:53,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999498488] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:53,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538299105] [2022-01-18 07:19:53,608 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:19:53,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:53,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:53,609 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:53,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 07:19:53,649 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 07:19:53,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:53,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:53,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:53,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:53,829 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:53,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538299105] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:53,830 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:53,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2022-01-18 07:19:53,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474929436] [2022-01-18 07:19:53,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:53,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:19:53,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:53,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:19:53,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:19:53,830 INFO L87 Difference]: Start difference. First operand 10513 states and 40569 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 07:19:55,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:55,223 INFO L93 Difference]: Finished difference Result 21294 states and 74335 transitions. [2022-01-18 07:19:55,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-18 07:19:55,223 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 30 [2022-01-18 07:19:55,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:55,277 INFO L225 Difference]: With dead ends: 21294 [2022-01-18 07:19:55,277 INFO L226 Difference]: Without dead ends: 21234 [2022-01-18 07:19:55,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3973 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2362, Invalid=8350, Unknown=0, NotChecked=0, Total=10712 [2022-01-18 07:19:55,279 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 688 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:55,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 362 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:19:55,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21234 states. [2022-01-18 07:19:55,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21234 to 10549. [2022-01-18 07:19:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10549 states, 10548 states have (on average 3.8569397042093287) internal successors, (40683), 10548 states have internal predecessors, (40683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:55,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10549 states to 10549 states and 40683 transitions. [2022-01-18 07:19:55,593 INFO L78 Accepts]: Start accepts. Automaton has 10549 states and 40683 transitions. Word has length 30 [2022-01-18 07:19:55,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:55,593 INFO L470 AbstractCegarLoop]: Abstraction has 10549 states and 40683 transitions. [2022-01-18 07:19:55,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 07:19:55,593 INFO L276 IsEmpty]: Start isEmpty. Operand 10549 states and 40683 transitions. [2022-01-18 07:19:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:55,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:55,610 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:55,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-01-18 07:19:55,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:55,812 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:55,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:55,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1799884623, now seen corresponding path program 48 times [2022-01-18 07:19:55,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:55,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119120030] [2022-01-18 07:19:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:55,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:55,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:55,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119120030] [2022-01-18 07:19:55,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119120030] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:55,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207742447] [2022-01-18 07:19:55,853 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:19:55,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:55,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:55,854 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:55,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 07:19:55,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 07:19:55,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:55,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:55,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:55,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:56,101 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:56,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207742447] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:56,106 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:56,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2022-01-18 07:19:56,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301292303] [2022-01-18 07:19:56,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:56,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:19:56,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:56,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:19:56,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:19:56,106 INFO L87 Difference]: Start difference. First operand 10549 states and 40683 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 07:19:57,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:57,145 INFO L93 Difference]: Finished difference Result 20594 states and 72770 transitions. [2022-01-18 07:19:57,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 07:19:57,146 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 30 [2022-01-18 07:19:57,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:57,196 INFO L225 Difference]: With dead ends: 20594 [2022-01-18 07:19:57,196 INFO L226 Difference]: Without dead ends: 20570 [2022-01-18 07:19:57,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2360 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1571, Invalid=5235, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 07:19:57,197 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 685 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:57,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 291 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:19:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20570 states. [2022-01-18 07:19:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20570 to 10859. [2022-01-18 07:19:57,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10859 states, 10858 states have (on average 3.8277767544667527) internal successors, (41562), 10858 states have internal predecessors, (41562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10859 states to 10859 states and 41562 transitions. [2022-01-18 07:19:57,535 INFO L78 Accepts]: Start accepts. Automaton has 10859 states and 41562 transitions. Word has length 30 [2022-01-18 07:19:57,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:57,535 INFO L470 AbstractCegarLoop]: Abstraction has 10859 states and 41562 transitions. [2022-01-18 07:19:57,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 07:19:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand 10859 states and 41562 transitions. [2022-01-18 07:19:57,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:57,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:57,553 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:57,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-01-18 07:19:57,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:57,754 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:57,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:57,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2070394315, now seen corresponding path program 49 times [2022-01-18 07:19:57,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:57,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118710226] [2022-01-18 07:19:57,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:57,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:57,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:57,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118710226] [2022-01-18 07:19:57,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118710226] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:57,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503511300] [2022-01-18 07:19:57,795 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:19:57,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:57,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:57,796 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:57,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 07:19:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:57,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:57,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:19:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:57,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:19:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:58,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503511300] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:19:58,011 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:19:58,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2022-01-18 07:19:58,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553477048] [2022-01-18 07:19:58,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:19:58,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:19:58,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:19:58,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:19:58,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:19:58,012 INFO L87 Difference]: Start difference. First operand 10859 states and 41562 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 07:19:59,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:19:59,224 INFO L93 Difference]: Finished difference Result 21194 states and 74398 transitions. [2022-01-18 07:19:59,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 07:19:59,224 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 30 [2022-01-18 07:19:59,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:19:59,335 INFO L225 Difference]: With dead ends: 21194 [2022-01-18 07:19:59,335 INFO L226 Difference]: Without dead ends: 21194 [2022-01-18 07:19:59,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3013 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1812, Invalid=6378, Unknown=0, NotChecked=0, Total=8190 [2022-01-18 07:19:59,336 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 531 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:19:59,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 408 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:19:59,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21194 states. [2022-01-18 07:19:59,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21194 to 10615. [2022-01-18 07:19:59,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10615 states, 10614 states have (on average 3.8362540041454682) internal successors, (40718), 10614 states have internal predecessors, (40718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:19:59,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10615 states to 10615 states and 40718 transitions. [2022-01-18 07:19:59,619 INFO L78 Accepts]: Start accepts. Automaton has 10615 states and 40718 transitions. Word has length 30 [2022-01-18 07:19:59,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:19:59,619 INFO L470 AbstractCegarLoop]: Abstraction has 10615 states and 40718 transitions. [2022-01-18 07:19:59,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 07:19:59,619 INFO L276 IsEmpty]: Start isEmpty. Operand 10615 states and 40718 transitions. [2022-01-18 07:19:59,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:19:59,636 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:19:59,636 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:19:59,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-01-18 07:19:59,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-01-18 07:19:59,837 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:19:59,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:19:59,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1709119399, now seen corresponding path program 50 times [2022-01-18 07:19:59,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:19:59,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102067222] [2022-01-18 07:19:59,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:19:59,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:19:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:19:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:19:59,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:19:59,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102067222] [2022-01-18 07:19:59,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102067222] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:19:59,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283621205] [2022-01-18 07:19:59,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:19:59,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:19:59,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:19:59,884 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:19:59,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 07:19:59,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:19:59,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:19:59,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:19:59,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 07:20:00,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:00,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283621205] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:00,085 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:00,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 16 [2022-01-18 07:20:00,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507207254] [2022-01-18 07:20:00,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:00,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:20:00,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:00,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:20:00,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:20:00,085 INFO L87 Difference]: Start difference. First operand 10615 states and 40718 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:00,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:00,765 INFO L93 Difference]: Finished difference Result 18007 states and 64907 transitions. [2022-01-18 07:20:00,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 07:20:00,766 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:00,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:00,809 INFO L225 Difference]: With dead ends: 18007 [2022-01-18 07:20:00,809 INFO L226 Difference]: Without dead ends: 17983 [2022-01-18 07:20:00,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=755, Invalid=2551, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 07:20:00,810 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 500 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:00,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 305 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:20:00,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17983 states. [2022-01-18 07:20:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17983 to 10712. [2022-01-18 07:20:01,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10712 states, 10711 states have (on average 3.8259732984782) internal successors, (40980), 10711 states have internal predecessors, (40980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:01,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10712 states to 10712 states and 40980 transitions. [2022-01-18 07:20:01,153 INFO L78 Accepts]: Start accepts. Automaton has 10712 states and 40980 transitions. Word has length 30 [2022-01-18 07:20:01,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:01,153 INFO L470 AbstractCegarLoop]: Abstraction has 10712 states and 40980 transitions. [2022-01-18 07:20:01,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:01,153 INFO L276 IsEmpty]: Start isEmpty. Operand 10712 states and 40980 transitions. [2022-01-18 07:20:01,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:01,170 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:01,170 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:01,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-01-18 07:20:01,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-01-18 07:20:01,371 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:01,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:01,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1875224879, now seen corresponding path program 51 times [2022-01-18 07:20:01,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:01,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744664195] [2022-01-18 07:20:01,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:01,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:01,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:01,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744664195] [2022-01-18 07:20:01,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744664195] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:01,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587660861] [2022-01-18 07:20:01,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:20:01,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:01,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:01,423 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:01,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 07:20:01,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:20:01,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:01,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 07:20:01,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:01,590 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-18 07:20:01,682 INFO L353 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2022-01-18 07:20:01,683 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:20:01,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:20:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:20:01,766 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:20:01,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-01-18 07:20:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:01,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:02,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:20:02,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:20:02,158 INFO L353 Elim1Store]: treesize reduction 15, result has 59.5 percent of original size [2022-01-18 07:20:02,158 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 38 [2022-01-18 07:20:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:02,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587660861] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:02,330 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:02,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 33 [2022-01-18 07:20:02,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982527581] [2022-01-18 07:20:02,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:02,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 07:20:02,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:02,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 07:20:02,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 07:20:02,330 INFO L87 Difference]: Start difference. First operand 10712 states and 40980 transitions. Second operand has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:13,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:13,835 INFO L93 Difference]: Finished difference Result 22235 states and 76160 transitions. [2022-01-18 07:20:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 315 states. [2022-01-18 07:20:13,836 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:13,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:13,885 INFO L225 Difference]: With dead ends: 22235 [2022-01-18 07:20:13,885 INFO L226 Difference]: Without dead ends: 21879 [2022-01-18 07:20:13,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53870 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=16043, Invalid=97863, Unknown=0, NotChecked=0, Total=113906 [2022-01-18 07:20:13,896 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 1776 mSDsluCounter, 2013 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 4267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1085 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:13,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1776 Valid, 1118 Invalid, 4267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 2795 Invalid, 0 Unknown, 1085 Unchecked, 1.4s Time] [2022-01-18 07:20:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21879 states. [2022-01-18 07:20:14,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21879 to 10551. [2022-01-18 07:20:14,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10551 states, 10550 states have (on average 3.8341232227488153) internal successors, (40450), 10550 states have internal predecessors, (40450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10551 states to 10551 states and 40450 transitions. [2022-01-18 07:20:14,243 INFO L78 Accepts]: Start accepts. Automaton has 10551 states and 40450 transitions. Word has length 30 [2022-01-18 07:20:14,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:14,243 INFO L470 AbstractCegarLoop]: Abstraction has 10551 states and 40450 transitions. [2022-01-18 07:20:14,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:14,244 INFO L276 IsEmpty]: Start isEmpty. Operand 10551 states and 40450 transitions. [2022-01-18 07:20:14,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:14,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:14,261 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:14,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-01-18 07:20:14,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:14,461 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:14,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:14,462 INFO L85 PathProgramCache]: Analyzing trace with hash 898941043, now seen corresponding path program 52 times [2022-01-18 07:20:14,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:14,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590214449] [2022-01-18 07:20:14,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:14,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:14,491 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:14,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:14,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590214449] [2022-01-18 07:20:14,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590214449] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:14,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805907419] [2022-01-18 07:20:14,492 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:20:14,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:14,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:14,493 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:14,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 07:20:14,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:20:14,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:14,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:20:14,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 07:20:14,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:14,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805907419] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:14,704 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:14,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2022-01-18 07:20:14,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54441141] [2022-01-18 07:20:14,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:14,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:20:14,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:14,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:20:14,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:20:14,705 INFO L87 Difference]: Start difference. First operand 10551 states and 40450 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:14,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:14,950 INFO L93 Difference]: Finished difference Result 13750 states and 51008 transitions. [2022-01-18 07:20:14,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 07:20:14,950 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:14,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:14,981 INFO L225 Difference]: With dead ends: 13750 [2022-01-18 07:20:14,981 INFO L226 Difference]: Without dead ends: 13710 [2022-01-18 07:20:14,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=203, Invalid=349, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:20:14,982 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 208 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:14,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 85 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:20:14,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13710 states. [2022-01-18 07:20:15,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13710 to 10277. [2022-01-18 07:20:15,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10277 states, 10276 states have (on average 3.822109770338653) internal successors, (39276), 10276 states have internal predecessors, (39276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:15,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10277 states to 10277 states and 39276 transitions. [2022-01-18 07:20:15,178 INFO L78 Accepts]: Start accepts. Automaton has 10277 states and 39276 transitions. Word has length 30 [2022-01-18 07:20:15,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:15,178 INFO L470 AbstractCegarLoop]: Abstraction has 10277 states and 39276 transitions. [2022-01-18 07:20:15,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:15,178 INFO L276 IsEmpty]: Start isEmpty. Operand 10277 states and 39276 transitions. [2022-01-18 07:20:15,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:15,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:15,195 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:15,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-01-18 07:20:15,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:15,396 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:15,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:15,396 INFO L85 PathProgramCache]: Analyzing trace with hash -243984997, now seen corresponding path program 53 times [2022-01-18 07:20:15,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:15,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970841588] [2022-01-18 07:20:15,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:15,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:15,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:15,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:15,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970841588] [2022-01-18 07:20:15,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970841588] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:15,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241859263] [2022-01-18 07:20:15,426 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:20:15,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:15,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:15,427 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:15,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 07:20:15,469 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:20:15,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:15,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:20:15,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 07:20:15,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:15,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241859263] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:15,638 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:15,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2022-01-18 07:20:15,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125945087] [2022-01-18 07:20:15,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:15,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:20:15,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:15,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:20:15,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:20:15,639 INFO L87 Difference]: Start difference. First operand 10277 states and 39276 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:16,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:16,054 INFO L93 Difference]: Finished difference Result 15943 states and 57174 transitions. [2022-01-18 07:20:16,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 07:20:16,054 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:16,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:16,089 INFO L225 Difference]: With dead ends: 15943 [2022-01-18 07:20:16,089 INFO L226 Difference]: Without dead ends: 15943 [2022-01-18 07:20:16,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=462, Invalid=944, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 07:20:16,090 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 420 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:16,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 122 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:20:16,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15943 states. [2022-01-18 07:20:16,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15943 to 11669. [2022-01-18 07:20:16,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11669 states, 11668 states have (on average 3.842817963661296) internal successors, (44838), 11668 states have internal predecessors, (44838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:16,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11669 states to 11669 states and 44838 transitions. [2022-01-18 07:20:16,376 INFO L78 Accepts]: Start accepts. Automaton has 11669 states and 44838 transitions. Word has length 30 [2022-01-18 07:20:16,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:16,376 INFO L470 AbstractCegarLoop]: Abstraction has 11669 states and 44838 transitions. [2022-01-18 07:20:16,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:16,376 INFO L276 IsEmpty]: Start isEmpty. Operand 11669 states and 44838 transitions. [2022-01-18 07:20:16,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:16,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:16,394 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:16,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-01-18 07:20:16,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:16,595 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:16,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:16,595 INFO L85 PathProgramCache]: Analyzing trace with hash 14810327, now seen corresponding path program 54 times [2022-01-18 07:20:16,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:16,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111996502] [2022-01-18 07:20:16,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:16,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:16,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:16,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111996502] [2022-01-18 07:20:16,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111996502] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:16,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850029310] [2022-01-18 07:20:16,630 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:20:16,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:16,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:16,631 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:16,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 07:20:16,675 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:20:16,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:16,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:20:16,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 07:20:16,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:16,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850029310] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:16,824 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:16,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 13 [2022-01-18 07:20:16,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144801401] [2022-01-18 07:20:16,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:16,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:20:16,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:16,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:20:16,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:20:16,827 INFO L87 Difference]: Start difference. First operand 11669 states and 44838 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:17,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:17,117 INFO L93 Difference]: Finished difference Result 14497 states and 53134 transitions. [2022-01-18 07:20:17,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 07:20:17,117 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:17,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:17,150 INFO L225 Difference]: With dead ends: 14497 [2022-01-18 07:20:17,150 INFO L226 Difference]: Without dead ends: 14497 [2022-01-18 07:20:17,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2022-01-18 07:20:17,150 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 249 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:17,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 93 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:20:17,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14497 states. [2022-01-18 07:20:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14497 to 11861. [2022-01-18 07:20:17,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11861 states, 11860 states have (on average 3.8397133220910624) internal successors, (45539), 11860 states have internal predecessors, (45539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:17,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11861 states to 11861 states and 45539 transitions. [2022-01-18 07:20:17,375 INFO L78 Accepts]: Start accepts. Automaton has 11861 states and 45539 transitions. Word has length 30 [2022-01-18 07:20:17,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:17,375 INFO L470 AbstractCegarLoop]: Abstraction has 11861 states and 45539 transitions. [2022-01-18 07:20:17,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:17,375 INFO L276 IsEmpty]: Start isEmpty. Operand 11861 states and 45539 transitions. [2022-01-18 07:20:17,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:17,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:17,394 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:17,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-01-18 07:20:17,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:17,595 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1974130723, now seen corresponding path program 55 times [2022-01-18 07:20:17,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:17,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957034418] [2022-01-18 07:20:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:17,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:17,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:17,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957034418] [2022-01-18 07:20:17,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957034418] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:17,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914595276] [2022-01-18 07:20:17,633 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:20:17,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:17,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:17,634 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:17,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 07:20:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:17,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:20:17,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:17,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:17,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914595276] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:17,832 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:17,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 16 [2022-01-18 07:20:17,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101235604] [2022-01-18 07:20:17,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:17,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:20:17,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:17,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:20:17,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:20:17,833 INFO L87 Difference]: Start difference. First operand 11861 states and 45539 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:19,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:19,010 INFO L93 Difference]: Finished difference Result 25004 states and 87435 transitions. [2022-01-18 07:20:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 07:20:19,010 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:19,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:19,072 INFO L225 Difference]: With dead ends: 25004 [2022-01-18 07:20:19,072 INFO L226 Difference]: Without dead ends: 25004 [2022-01-18 07:20:19,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3376 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1732, Invalid=6640, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 07:20:19,073 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 619 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:19,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 329 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:20:19,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25004 states. [2022-01-18 07:20:19,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25004 to 13016. [2022-01-18 07:20:19,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13016 states, 13015 states have (on average 3.8539377641183252) internal successors, (50159), 13015 states have internal predecessors, (50159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13016 states to 13016 states and 50159 transitions. [2022-01-18 07:20:19,520 INFO L78 Accepts]: Start accepts. Automaton has 13016 states and 50159 transitions. Word has length 30 [2022-01-18 07:20:19,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:19,520 INFO L470 AbstractCegarLoop]: Abstraction has 13016 states and 50159 transitions. [2022-01-18 07:20:19,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:19,520 INFO L276 IsEmpty]: Start isEmpty. Operand 13016 states and 50159 transitions. [2022-01-18 07:20:19,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:19,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:19,545 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:19,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-01-18 07:20:19,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:19,745 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:19,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:19,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1442224409, now seen corresponding path program 56 times [2022-01-18 07:20:19,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:19,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233374146] [2022-01-18 07:20:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:19,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:19,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:19,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233374146] [2022-01-18 07:20:19,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233374146] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:19,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130388516] [2022-01-18 07:20:19,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:20:19,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:19,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:19,782 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:19,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 07:20:19,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:20:19,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:19,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:20:19,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:19,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:19,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130388516] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:19,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:19,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 15 [2022-01-18 07:20:19,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956473395] [2022-01-18 07:20:19,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:19,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:20:19,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:19,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:20:19,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:20:19,970 INFO L87 Difference]: Start difference. First operand 13016 states and 50159 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:20,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:20,886 INFO L93 Difference]: Finished difference Result 23852 states and 84334 transitions. [2022-01-18 07:20:20,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 07:20:20,887 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:20,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:20,944 INFO L225 Difference]: With dead ends: 23852 [2022-01-18 07:20:20,944 INFO L226 Difference]: Without dead ends: 23840 [2022-01-18 07:20:20,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2356 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1293, Invalid=4869, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 07:20:20,945 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 602 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:20,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 276 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:20:20,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23840 states. [2022-01-18 07:20:21,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23840 to 12938. [2022-01-18 07:20:21,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12938 states, 12937 states have (on average 3.859472829867821) internal successors, (49930), 12937 states have internal predecessors, (49930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:21,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12938 states to 12938 states and 49930 transitions. [2022-01-18 07:20:21,344 INFO L78 Accepts]: Start accepts. Automaton has 12938 states and 49930 transitions. Word has length 30 [2022-01-18 07:20:21,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:21,344 INFO L470 AbstractCegarLoop]: Abstraction has 12938 states and 49930 transitions. [2022-01-18 07:20:21,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:21,345 INFO L276 IsEmpty]: Start isEmpty. Operand 12938 states and 49930 transitions. [2022-01-18 07:20:21,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:21,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:21,369 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:21,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-01-18 07:20:21,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2022-01-18 07:20:21,569 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:21,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:21,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1246161191, now seen corresponding path program 57 times [2022-01-18 07:20:21,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:21,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121289795] [2022-01-18 07:20:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:21,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:21,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:21,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121289795] [2022-01-18 07:20:21,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121289795] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:21,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387981573] [2022-01-18 07:20:21,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:20:21,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:21,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:21,610 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:21,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-01-18 07:20:21,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:20:21,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:21,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:20:21,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:21,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:21,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387981573] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:21,806 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:21,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 16 [2022-01-18 07:20:21,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420087035] [2022-01-18 07:20:21,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:21,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:20:21,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:20:21,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:20:21,806 INFO L87 Difference]: Start difference. First operand 12938 states and 49930 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:22,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:22,620 INFO L93 Difference]: Finished difference Result 22366 states and 80695 transitions. [2022-01-18 07:20:22,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 07:20:22,621 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:22,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:22,673 INFO L225 Difference]: With dead ends: 22366 [2022-01-18 07:20:22,674 INFO L226 Difference]: Without dead ends: 22334 [2022-01-18 07:20:22,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=911, Invalid=3511, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 07:20:22,674 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 470 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:22,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 225 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:20:22,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22334 states. [2022-01-18 07:20:22,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22334 to 12881. [2022-01-18 07:20:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12881 states, 12880 states have (on average 3.864829192546584) internal successors, (49779), 12880 states have internal predecessors, (49779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12881 states to 12881 states and 49779 transitions. [2022-01-18 07:20:23,006 INFO L78 Accepts]: Start accepts. Automaton has 12881 states and 49779 transitions. Word has length 30 [2022-01-18 07:20:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:23,006 INFO L470 AbstractCegarLoop]: Abstraction has 12881 states and 49779 transitions. [2022-01-18 07:20:23,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand 12881 states and 49779 transitions. [2022-01-18 07:20:23,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:23,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:23,029 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:23,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-01-18 07:20:23,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:23,230 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:23,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:23,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1525545573, now seen corresponding path program 58 times [2022-01-18 07:20:23,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:23,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301052845] [2022-01-18 07:20:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:23,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:23,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:23,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301052845] [2022-01-18 07:20:23,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301052845] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:23,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239812159] [2022-01-18 07:20:23,264 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:20:23,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:23,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:23,265 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:23,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-01-18 07:20:23,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:20:23,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:23,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:20:23,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:23,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:23,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239812159] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:23,446 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:23,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-01-18 07:20:23,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946087490] [2022-01-18 07:20:23,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:23,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 07:20:23,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:23,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 07:20:23,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-18 07:20:23,447 INFO L87 Difference]: Start difference. First operand 12881 states and 49779 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:23,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:23,714 INFO L93 Difference]: Finished difference Result 14655 states and 54802 transitions. [2022-01-18 07:20:23,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 07:20:23,714 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:23,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:23,748 INFO L225 Difference]: With dead ends: 14655 [2022-01-18 07:20:23,749 INFO L226 Difference]: Without dead ends: 14655 [2022-01-18 07:20:23,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:20:23,749 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 186 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:23,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 82 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:20:23,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14655 states. [2022-01-18 07:20:23,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14655 to 12646. [2022-01-18 07:20:23,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12646 states, 12645 states have (on average 3.868880980624753) internal successors, (48922), 12645 states have internal predecessors, (48922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:23,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12646 states to 12646 states and 48922 transitions. [2022-01-18 07:20:23,985 INFO L78 Accepts]: Start accepts. Automaton has 12646 states and 48922 transitions. Word has length 30 [2022-01-18 07:20:23,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:23,985 INFO L470 AbstractCegarLoop]: Abstraction has 12646 states and 48922 transitions. [2022-01-18 07:20:23,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:23,985 INFO L276 IsEmpty]: Start isEmpty. Operand 12646 states and 48922 transitions. [2022-01-18 07:20:24,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:24,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:24,008 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:24,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-01-18 07:20:24,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:24,208 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:24,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:24,208 INFO L85 PathProgramCache]: Analyzing trace with hash -435342281, now seen corresponding path program 59 times [2022-01-18 07:20:24,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:24,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181231984] [2022-01-18 07:20:24,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:24,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:24,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:24,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181231984] [2022-01-18 07:20:24,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181231984] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:24,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466974841] [2022-01-18 07:20:24,248 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:20:24,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:24,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:24,248 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:24,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-01-18 07:20:24,292 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:20:24,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:24,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:20:24,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:24,364 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:24,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:24,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466974841] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:24,433 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:24,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2022-01-18 07:20:24,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215528606] [2022-01-18 07:20:24,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:24,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:20:24,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:24,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:20:24,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:20:24,434 INFO L87 Difference]: Start difference. First operand 12646 states and 48922 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:25,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:25,278 INFO L93 Difference]: Finished difference Result 21690 states and 78211 transitions. [2022-01-18 07:20:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 07:20:25,278 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:25,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:25,328 INFO L225 Difference]: With dead ends: 21690 [2022-01-18 07:20:25,329 INFO L226 Difference]: Without dead ends: 21690 [2022-01-18 07:20:25,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=903, Invalid=3129, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 07:20:25,329 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 398 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:25,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 308 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:20:25,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21690 states. [2022-01-18 07:20:25,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21690 to 13376. [2022-01-18 07:20:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13376 states, 13375 states have (on average 3.8450841121495327) internal successors, (51428), 13375 states have internal predecessors, (51428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:25,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13376 states to 13376 states and 51428 transitions. [2022-01-18 07:20:25,664 INFO L78 Accepts]: Start accepts. Automaton has 13376 states and 51428 transitions. Word has length 30 [2022-01-18 07:20:25,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:25,664 INFO L470 AbstractCegarLoop]: Abstraction has 13376 states and 51428 transitions. [2022-01-18 07:20:25,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:25,664 INFO L276 IsEmpty]: Start isEmpty. Operand 13376 states and 51428 transitions. [2022-01-18 07:20:25,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:25,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:25,688 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:25,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-01-18 07:20:25,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:25,888 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:25,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:25,888 INFO L85 PathProgramCache]: Analyzing trace with hash 96564033, now seen corresponding path program 60 times [2022-01-18 07:20:25,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:25,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858512675] [2022-01-18 07:20:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:25,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:25,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:25,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858512675] [2022-01-18 07:20:25,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858512675] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:25,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195932013] [2022-01-18 07:20:25,925 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:20:25,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:25,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:25,926 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:25,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-01-18 07:20:25,971 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 07:20:25,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:25,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:20:25,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:26,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:26,105 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:26,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195932013] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:26,106 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:26,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-01-18 07:20:26,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724290974] [2022-01-18 07:20:26,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:26,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:20:26,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:26,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:20:26,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:20:26,106 INFO L87 Difference]: Start difference. First operand 13376 states and 51428 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:26,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:26,706 INFO L93 Difference]: Finished difference Result 20800 states and 75794 transitions. [2022-01-18 07:20:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 07:20:26,707 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:26,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:26,756 INFO L225 Difference]: With dead ends: 20800 [2022-01-18 07:20:26,757 INFO L226 Difference]: Without dead ends: 20788 [2022-01-18 07:20:26,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=608, Invalid=2044, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 07:20:26,757 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 382 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:26,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 235 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:20:26,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20788 states. [2022-01-18 07:20:27,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20788 to 13222. [2022-01-18 07:20:27,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13222 states, 13221 states have (on average 3.855911050601316) internal successors, (50979), 13221 states have internal predecessors, (50979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13222 states to 13222 states and 50979 transitions. [2022-01-18 07:20:27,070 INFO L78 Accepts]: Start accepts. Automaton has 13222 states and 50979 transitions. Word has length 30 [2022-01-18 07:20:27,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:27,070 INFO L470 AbstractCegarLoop]: Abstraction has 13222 states and 50979 transitions. [2022-01-18 07:20:27,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:27,071 INFO L276 IsEmpty]: Start isEmpty. Operand 13222 states and 50979 transitions. [2022-01-18 07:20:27,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:27,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:27,094 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:27,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-01-18 07:20:27,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:27,294 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:27,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:27,295 INFO L85 PathProgramCache]: Analyzing trace with hash -542841171, now seen corresponding path program 61 times [2022-01-18 07:20:27,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:27,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683817393] [2022-01-18 07:20:27,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:27,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:27,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:27,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683817393] [2022-01-18 07:20:27,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683817393] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:27,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558994027] [2022-01-18 07:20:27,335 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:20:27,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:27,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:27,336 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:27,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-01-18 07:20:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:27,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:20:27,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:27,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:27,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558994027] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:27,522 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:27,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2022-01-18 07:20:27,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240831847] [2022-01-18 07:20:27,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:27,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:20:27,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:27,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:20:27,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:20:27,522 INFO L87 Difference]: Start difference. First operand 13222 states and 50979 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:28,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:28,162 INFO L93 Difference]: Finished difference Result 20946 states and 76381 transitions. [2022-01-18 07:20:28,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 07:20:28,163 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:28,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:28,213 INFO L225 Difference]: With dead ends: 20946 [2022-01-18 07:20:28,213 INFO L226 Difference]: Without dead ends: 20926 [2022-01-18 07:20:28,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=574, Invalid=2182, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 07:20:28,214 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 390 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:28,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 233 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:20:28,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20926 states. [2022-01-18 07:20:28,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20926 to 13408. [2022-01-18 07:20:28,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13408 states, 13407 states have (on average 3.8412769448795405) internal successors, (51500), 13407 states have internal predecessors, (51500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:28,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13408 states to 13408 states and 51500 transitions. [2022-01-18 07:20:28,547 INFO L78 Accepts]: Start accepts. Automaton has 13408 states and 51500 transitions. Word has length 30 [2022-01-18 07:20:28,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:28,547 INFO L470 AbstractCegarLoop]: Abstraction has 13408 states and 51500 transitions. [2022-01-18 07:20:28,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:28,547 INFO L276 IsEmpty]: Start isEmpty. Operand 13408 states and 51500 transitions. [2022-01-18 07:20:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:28,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:28,570 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:28,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-01-18 07:20:28,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:28,771 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:28,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:28,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1968514673, now seen corresponding path program 62 times [2022-01-18 07:20:28,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:28,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819981] [2022-01-18 07:20:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:28,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:28,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:28,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819981] [2022-01-18 07:20:28,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819981] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:28,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451950150] [2022-01-18 07:20:28,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:20:28,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:28,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:28,823 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:28,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-01-18 07:20:28,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:20:28,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:28,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:20:28,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:28,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:29,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451950150] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:29,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:29,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-01-18 07:20:29,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681216243] [2022-01-18 07:20:29,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:29,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:20:29,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:29,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:20:29,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:20:29,077 INFO L87 Difference]: Start difference. First operand 13408 states and 51500 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:30,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:30,767 INFO L93 Difference]: Finished difference Result 19415 states and 69884 transitions. [2022-01-18 07:20:30,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-18 07:20:30,767 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:30,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:30,812 INFO L225 Difference]: With dead ends: 19415 [2022-01-18 07:20:30,813 INFO L226 Difference]: Without dead ends: 19415 [2022-01-18 07:20:30,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4263 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2280, Invalid=9276, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 07:20:30,814 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 492 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:30,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 456 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:20:30,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19415 states. [2022-01-18 07:20:31,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19415 to 14051. [2022-01-18 07:20:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14051 states, 14050 states have (on average 3.817224199288256) internal successors, (53632), 14050 states have internal predecessors, (53632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:31,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14051 states to 14051 states and 53632 transitions. [2022-01-18 07:20:31,194 INFO L78 Accepts]: Start accepts. Automaton has 14051 states and 53632 transitions. Word has length 30 [2022-01-18 07:20:31,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:31,194 INFO L470 AbstractCegarLoop]: Abstraction has 14051 states and 53632 transitions. [2022-01-18 07:20:31,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:31,194 INFO L276 IsEmpty]: Start isEmpty. Operand 14051 states and 53632 transitions. [2022-01-18 07:20:31,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:31,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:31,218 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:31,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-01-18 07:20:31,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-01-18 07:20:31,419 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:31,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:31,419 INFO L85 PathProgramCache]: Analyzing trace with hash -341365967, now seen corresponding path program 63 times [2022-01-18 07:20:31,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:31,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086188421] [2022-01-18 07:20:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:31,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:31,459 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:31,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:31,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086188421] [2022-01-18 07:20:31,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086188421] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:31,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420771809] [2022-01-18 07:20:31,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:20:31,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:31,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:31,460 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:31,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-01-18 07:20:31,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:20:31,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:31,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:20:31,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:31,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:31,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420771809] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:31,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:31,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 21 [2022-01-18 07:20:31,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797499243] [2022-01-18 07:20:31,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:31,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:20:31,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:31,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:20:31,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:20:31,716 INFO L87 Difference]: Start difference. First operand 14051 states and 53632 transitions. Second operand has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 07:20:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:32,951 INFO L93 Difference]: Finished difference Result 18580 states and 67695 transitions. [2022-01-18 07:20:32,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 07:20:32,952 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 30 [2022-01-18 07:20:32,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:32,995 INFO L225 Difference]: With dead ends: 18580 [2022-01-18 07:20:32,995 INFO L226 Difference]: Without dead ends: 18572 [2022-01-18 07:20:32,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1558, Invalid=5582, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 07:20:32,996 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 410 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:32,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 308 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:20:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18572 states. [2022-01-18 07:20:33,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18572 to 13997. [2022-01-18 07:20:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13997 states, 13996 states have (on average 3.819734209774221) internal successors, (53461), 13996 states have internal predecessors, (53461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13997 states to 13997 states and 53461 transitions. [2022-01-18 07:20:33,314 INFO L78 Accepts]: Start accepts. Automaton has 13997 states and 53461 transitions. Word has length 30 [2022-01-18 07:20:33,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:33,314 INFO L470 AbstractCegarLoop]: Abstraction has 13997 states and 53461 transitions. [2022-01-18 07:20:33,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 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 07:20:33,314 INFO L276 IsEmpty]: Start isEmpty. Operand 13997 states and 53461 transitions. [2022-01-18 07:20:33,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:33,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:33,338 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:33,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-01-18 07:20:33,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:33,539 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:33,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:33,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1508609255, now seen corresponding path program 64 times [2022-01-18 07:20:33,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:33,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692367042] [2022-01-18 07:20:33,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:33,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:33,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:33,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692367042] [2022-01-18 07:20:33,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692367042] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:33,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477032613] [2022-01-18 07:20:33,587 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:20:33,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:33,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:33,588 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:33,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-01-18 07:20:33,642 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:20:33,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:33,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:20:33,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:33,745 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:33,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:33,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:33,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477032613] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:33,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:33,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2022-01-18 07:20:33,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732217865] [2022-01-18 07:20:33,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:33,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:20:33,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:33,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:20:33,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:20:33,856 INFO L87 Difference]: Start difference. First operand 13997 states and 53461 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 07:20:35,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:35,466 INFO L93 Difference]: Finished difference Result 20422 states and 72750 transitions. [2022-01-18 07:20:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-18 07:20:35,466 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 30 [2022-01-18 07:20:35,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:35,517 INFO L225 Difference]: With dead ends: 20422 [2022-01-18 07:20:35,518 INFO L226 Difference]: Without dead ends: 20422 [2022-01-18 07:20:35,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4394 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2164, Invalid=8966, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 07:20:35,519 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 572 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:35,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 489 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:20:35,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20422 states. [2022-01-18 07:20:35,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20422 to 14517. [2022-01-18 07:20:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14517 states, 14516 states have (on average 3.8018049049324882) internal successors, (55187), 14516 states have internal predecessors, (55187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14517 states to 14517 states and 55187 transitions. [2022-01-18 07:20:35,901 INFO L78 Accepts]: Start accepts. Automaton has 14517 states and 55187 transitions. Word has length 30 [2022-01-18 07:20:35,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:35,901 INFO L470 AbstractCegarLoop]: Abstraction has 14517 states and 55187 transitions. [2022-01-18 07:20:35,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 07:20:35,901 INFO L276 IsEmpty]: Start isEmpty. Operand 14517 states and 55187 transitions. [2022-01-18 07:20:35,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:35,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:35,927 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:35,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-01-18 07:20:36,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:36,128 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:36,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:36,128 INFO L85 PathProgramCache]: Analyzing trace with hash 453231861, now seen corresponding path program 65 times [2022-01-18 07:20:36,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:36,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138604575] [2022-01-18 07:20:36,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:36,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:36,175 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:36,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:36,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138604575] [2022-01-18 07:20:36,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138604575] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:36,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447998381] [2022-01-18 07:20:36,175 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:20:36,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:36,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:36,176 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:36,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-01-18 07:20:36,223 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:20:36,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:36,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:20:36,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:36,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:36,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447998381] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:36,431 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:36,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2022-01-18 07:20:36,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110227624] [2022-01-18 07:20:36,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:36,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:20:36,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:36,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:20:36,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:20:36,432 INFO L87 Difference]: Start difference. First operand 14517 states and 55187 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 07:20:37,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:37,620 INFO L93 Difference]: Finished difference Result 19474 states and 70379 transitions. [2022-01-18 07:20:37,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 07:20:37,621 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 30 [2022-01-18 07:20:37,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:37,666 INFO L225 Difference]: With dead ends: 19474 [2022-01-18 07:20:37,666 INFO L226 Difference]: Without dead ends: 19466 [2022-01-18 07:20:37,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1617, Invalid=6215, Unknown=0, NotChecked=0, Total=7832 [2022-01-18 07:20:37,667 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 508 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:37,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 323 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:20:37,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19466 states. [2022-01-18 07:20:37,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19466 to 14517. [2022-01-18 07:20:37,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14517 states, 14516 states have (on average 3.8015293469275284) internal successors, (55183), 14516 states have internal predecessors, (55183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14517 states to 14517 states and 55183 transitions. [2022-01-18 07:20:37,999 INFO L78 Accepts]: Start accepts. Automaton has 14517 states and 55183 transitions. Word has length 30 [2022-01-18 07:20:37,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:37,999 INFO L470 AbstractCegarLoop]: Abstraction has 14517 states and 55183 transitions. [2022-01-18 07:20:37,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 07:20:37,999 INFO L276 IsEmpty]: Start isEmpty. Operand 14517 states and 55183 transitions. [2022-01-18 07:20:38,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:38,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:38,024 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:38,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-01-18 07:20:38,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:38,224 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:38,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:38,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1936366799, now seen corresponding path program 66 times [2022-01-18 07:20:38,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:38,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312462640] [2022-01-18 07:20:38,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:38,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:38,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:38,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312462640] [2022-01-18 07:20:38,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312462640] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:38,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641919779] [2022-01-18 07:20:38,314 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:20:38,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:38,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:38,315 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:38,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-01-18 07:20:38,361 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:20:38,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:38,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:20:38,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:38,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:38,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:38,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641919779] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:38,548 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:38,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 20 [2022-01-18 07:20:38,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824422636] [2022-01-18 07:20:38,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:38,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:20:38,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:38,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:20:38,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:20:38,548 INFO L87 Difference]: Start difference. First operand 14517 states and 55183 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:39,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:39,598 INFO L93 Difference]: Finished difference Result 19234 states and 69889 transitions. [2022-01-18 07:20:39,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 07:20:39,598 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:39,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:39,652 INFO L225 Difference]: With dead ends: 19234 [2022-01-18 07:20:39,652 INFO L226 Difference]: Without dead ends: 19210 [2022-01-18 07:20:39,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1170, Invalid=4530, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 07:20:39,653 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 456 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:39,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 320 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:20:39,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19210 states. [2022-01-18 07:20:39,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19210 to 14517. [2022-01-18 07:20:39,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14517 states, 14516 states have (on average 3.8009782309176083) internal successors, (55175), 14516 states have internal predecessors, (55175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:39,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14517 states to 14517 states and 55175 transitions. [2022-01-18 07:20:39,991 INFO L78 Accepts]: Start accepts. Automaton has 14517 states and 55175 transitions. Word has length 30 [2022-01-18 07:20:39,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:39,991 INFO L470 AbstractCegarLoop]: Abstraction has 14517 states and 55175 transitions. [2022-01-18 07:20:39,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:39,991 INFO L276 IsEmpty]: Start isEmpty. Operand 14517 states and 55175 transitions. [2022-01-18 07:20:40,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:40,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:40,017 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:40,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-01-18 07:20:40,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:40,218 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:40,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:40,218 INFO L85 PathProgramCache]: Analyzing trace with hash -812528685, now seen corresponding path program 67 times [2022-01-18 07:20:40,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:40,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981955618] [2022-01-18 07:20:40,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:40,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:40,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:40,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981955618] [2022-01-18 07:20:40,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981955618] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:40,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525445882] [2022-01-18 07:20:40,269 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:20:40,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:40,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:40,270 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:40,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-01-18 07:20:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:40,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:20:40,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:40,403 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:40,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:40,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525445882] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:40,492 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:40,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-01-18 07:20:40,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725087966] [2022-01-18 07:20:40,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:40,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:20:40,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:40,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:20:40,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:20:40,493 INFO L87 Difference]: Start difference. First operand 14517 states and 55175 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 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 07:20:41,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:41,467 INFO L93 Difference]: Finished difference Result 18899 states and 68968 transitions. [2022-01-18 07:20:41,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 07:20:41,468 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 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 30 [2022-01-18 07:20:41,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:41,515 INFO L225 Difference]: With dead ends: 18899 [2022-01-18 07:20:41,515 INFO L226 Difference]: Without dead ends: 18863 [2022-01-18 07:20:41,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1648 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1026, Invalid=3944, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 07:20:41,516 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 300 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:41,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 288 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:20:41,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18863 states. [2022-01-18 07:20:41,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18863 to 14621. [2022-01-18 07:20:41,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14621 states, 14620 states have (on average 3.7988372093023255) internal successors, (55539), 14620 states have internal predecessors, (55539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14621 states to 14621 states and 55539 transitions. [2022-01-18 07:20:41,844 INFO L78 Accepts]: Start accepts. Automaton has 14621 states and 55539 transitions. Word has length 30 [2022-01-18 07:20:41,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:41,844 INFO L470 AbstractCegarLoop]: Abstraction has 14621 states and 55539 transitions. [2022-01-18 07:20:41,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 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 07:20:41,844 INFO L276 IsEmpty]: Start isEmpty. Operand 14621 states and 55539 transitions. [2022-01-18 07:20:41,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:41,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:41,870 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:41,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-01-18 07:20:42,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:42,071 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:42,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:42,071 INFO L85 PathProgramCache]: Analyzing trace with hash 907843979, now seen corresponding path program 68 times [2022-01-18 07:20:42,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:42,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307523402] [2022-01-18 07:20:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:42,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:42,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:42,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307523402] [2022-01-18 07:20:42,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307523402] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:42,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652070308] [2022-01-18 07:20:42,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:20:42,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:42,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:42,131 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:42,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-01-18 07:20:42,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:20:42,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:42,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:20:42,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:42,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:42,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652070308] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:42,450 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:42,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-01-18 07:20:42,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621050160] [2022-01-18 07:20:42,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:42,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:20:42,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:42,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:20:42,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:20:42,453 INFO L87 Difference]: Start difference. First operand 14621 states and 55539 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:45,939 INFO L93 Difference]: Finished difference Result 30029 states and 104622 transitions. [2022-01-18 07:20:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-01-18 07:20:45,939 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:45,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:46,031 INFO L225 Difference]: With dead ends: 30029 [2022-01-18 07:20:46,032 INFO L226 Difference]: Without dead ends: 30029 [2022-01-18 07:20:46,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18427 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=7199, Invalid=34621, Unknown=0, NotChecked=0, Total=41820 [2022-01-18 07:20:46,036 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 821 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 2057 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:46,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [821 Valid, 633 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2057 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 07:20:46,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30029 states. [2022-01-18 07:20:46,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30029 to 16135. [2022-01-18 07:20:46,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16135 states, 16134 states have (on average 3.829738440560307) internal successors, (61789), 16134 states have internal predecessors, (61789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:46,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16135 states to 16135 states and 61789 transitions. [2022-01-18 07:20:46,555 INFO L78 Accepts]: Start accepts. Automaton has 16135 states and 61789 transitions. Word has length 30 [2022-01-18 07:20:46,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:46,556 INFO L470 AbstractCegarLoop]: Abstraction has 16135 states and 61789 transitions. [2022-01-18 07:20:46,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:46,556 INFO L276 IsEmpty]: Start isEmpty. Operand 16135 states and 61789 transitions. [2022-01-18 07:20:46,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:46,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:46,584 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:46,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-01-18 07:20:46,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-01-18 07:20:46,785 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:46,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:46,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1495589301, now seen corresponding path program 69 times [2022-01-18 07:20:46,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:46,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904236104] [2022-01-18 07:20:46,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:46,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:46,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:46,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904236104] [2022-01-18 07:20:46,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904236104] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:46,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399087070] [2022-01-18 07:20:46,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:20:46,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:46,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:46,833 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:46,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-01-18 07:20:46,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:20:46,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:46,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 07:20:46,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:47,024 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:20:47,118 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:20:47,118 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:20:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:47,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:47,464 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:20:47,464 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:20:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:47,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399087070] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:47,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:47,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 31 [2022-01-18 07:20:47,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289133926] [2022-01-18 07:20:47,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:47,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 07:20:47,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:47,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 07:20:47,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2022-01-18 07:20:47,685 INFO L87 Difference]: Start difference. First operand 16135 states and 61789 transitions. Second operand has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:52,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:52,338 INFO L93 Difference]: Finished difference Result 25546 states and 92153 transitions. [2022-01-18 07:20:52,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-01-18 07:20:52,338 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:52,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:52,406 INFO L225 Difference]: With dead ends: 25546 [2022-01-18 07:20:52,406 INFO L226 Difference]: Without dead ends: 25465 [2022-01-18 07:20:52,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 53 SyntacticMatches, 10 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12999 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3381, Invalid=28125, Unknown=0, NotChecked=0, Total=31506 [2022-01-18 07:20:52,410 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 886 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 3651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1389 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:52,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [886 Valid, 1177 Invalid, 3651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 2085 Invalid, 0 Unknown, 1389 Unchecked, 0.8s Time] [2022-01-18 07:20:52,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25465 states. [2022-01-18 07:20:52,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25465 to 16044. [2022-01-18 07:20:52,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16044 states, 16043 states have (on average 3.840304182509506) internal successors, (61610), 16043 states have internal predecessors, (61610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:52,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16044 states to 16044 states and 61610 transitions. [2022-01-18 07:20:52,837 INFO L78 Accepts]: Start accepts. Automaton has 16044 states and 61610 transitions. Word has length 30 [2022-01-18 07:20:52,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:52,838 INFO L470 AbstractCegarLoop]: Abstraction has 16044 states and 61610 transitions. [2022-01-18 07:20:52,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:52,838 INFO L276 IsEmpty]: Start isEmpty. Operand 16044 states and 61610 transitions. [2022-01-18 07:20:52,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:52,919 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:52,919 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:52,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-01-18 07:20:53,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-01-18 07:20:53,120 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:53,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:53,120 INFO L85 PathProgramCache]: Analyzing trace with hash -759533131, now seen corresponding path program 70 times [2022-01-18 07:20:53,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:53,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670375948] [2022-01-18 07:20:53,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:53,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:53,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:53,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670375948] [2022-01-18 07:20:53,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670375948] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:53,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786896459] [2022-01-18 07:20:53,171 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:20:53,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:53,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:53,175 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:53,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-01-18 07:20:53,229 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:20:53,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:53,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:20:53,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:53,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:53,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786896459] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:53,446 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:53,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-01-18 07:20:53,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882308358] [2022-01-18 07:20:53,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:53,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:20:53,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:53,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:20:53,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:20:53,446 INFO L87 Difference]: Start difference. First operand 16044 states and 61610 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:56,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:20:56,777 INFO L93 Difference]: Finished difference Result 39563 states and 138975 transitions. [2022-01-18 07:20:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2022-01-18 07:20:56,777 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:20:56,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:20:56,894 INFO L225 Difference]: With dead ends: 39563 [2022-01-18 07:20:56,895 INFO L226 Difference]: Without dead ends: 39563 [2022-01-18 07:20:56,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16013 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=7311, Invalid=28979, Unknown=0, NotChecked=0, Total=36290 [2022-01-18 07:20:56,899 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 827 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 2162 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:20:56,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 650 Invalid, 2298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2162 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 07:20:56,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39563 states. [2022-01-18 07:20:57,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39563 to 16139. [2022-01-18 07:20:57,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16139 states, 16138 states have (on average 3.849485685958607) internal successors, (62123), 16138 states have internal predecessors, (62123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16139 states to 16139 states and 62123 transitions. [2022-01-18 07:20:57,666 INFO L78 Accepts]: Start accepts. Automaton has 16139 states and 62123 transitions. Word has length 30 [2022-01-18 07:20:57,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:20:57,666 INFO L470 AbstractCegarLoop]: Abstraction has 16139 states and 62123 transitions. [2022-01-18 07:20:57,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:20:57,666 INFO L276 IsEmpty]: Start isEmpty. Operand 16139 states and 62123 transitions. [2022-01-18 07:20:57,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:20:57,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:20:57,694 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:20:57,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-01-18 07:20:57,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:57,895 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:20:57,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:20:57,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1299570705, now seen corresponding path program 71 times [2022-01-18 07:20:57,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:20:57,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606609872] [2022-01-18 07:20:57,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:20:57,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:20:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:20:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:57,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:20:57,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606609872] [2022-01-18 07:20:57,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606609872] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:20:57,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013319748] [2022-01-18 07:20:57,942 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:20:57,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:20:57,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:20:57,943 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:20:57,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-01-18 07:20:57,992 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 07:20:57,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:20:57,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:20:57,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:20:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:20:58,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:20:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:20:58,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013319748] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:20:58,211 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:20:58,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-01-18 07:20:58,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028885634] [2022-01-18 07:20:58,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:20:58,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:20:58,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:20:58,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:20:58,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:20:58,212 INFO L87 Difference]: Start difference. First operand 16139 states and 62123 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:02,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:21:02,183 INFO L93 Difference]: Finished difference Result 39410 states and 139201 transitions. [2022-01-18 07:21:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2022-01-18 07:21:02,183 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:21:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:21:02,302 INFO L225 Difference]: With dead ends: 39410 [2022-01-18 07:21:02,302 INFO L226 Difference]: Without dead ends: 39410 [2022-01-18 07:21:02,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22928 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9003, Invalid=42299, Unknown=0, NotChecked=0, Total=51302 [2022-01-18 07:21:02,308 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 887 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 2013 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 2197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:21:02,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [887 Valid, 656 Invalid, 2197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2013 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 07:21:02,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39410 states. [2022-01-18 07:21:02,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39410 to 15793. [2022-01-18 07:21:02,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15793 states, 15792 states have (on average 3.83314336372847) internal successors, (60533), 15792 states have internal predecessors, (60533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:03,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15793 states to 15793 states and 60533 transitions. [2022-01-18 07:21:03,016 INFO L78 Accepts]: Start accepts. Automaton has 15793 states and 60533 transitions. Word has length 30 [2022-01-18 07:21:03,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:21:03,016 INFO L470 AbstractCegarLoop]: Abstraction has 15793 states and 60533 transitions. [2022-01-18 07:21:03,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:03,016 INFO L276 IsEmpty]: Start isEmpty. Operand 15793 states and 60533 transitions. [2022-01-18 07:21:03,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:21:03,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:21:03,043 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:21:03,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-01-18 07:21:03,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:03,244 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:21:03,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:21:03,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1712540267, now seen corresponding path program 72 times [2022-01-18 07:21:03,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:21:03,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276638982] [2022-01-18 07:21:03,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:21:03,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:21:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:03,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:21:03,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276638982] [2022-01-18 07:21:03,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276638982] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:21:03,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274094714] [2022-01-18 07:21:03,287 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:21:03,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:03,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:21:03,288 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:21:03,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-01-18 07:21:03,336 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:21:03,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:21:03,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:21:03,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:21:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:03,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:21:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:03,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274094714] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:21:03,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:21:03,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-01-18 07:21:03,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461361237] [2022-01-18 07:21:03,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:21:03,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 07:21:03,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:21:03,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 07:21:03,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:21:03,574 INFO L87 Difference]: Start difference. First operand 15793 states and 60533 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 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 07:21:06,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:21:06,074 INFO L93 Difference]: Finished difference Result 32331 states and 115471 transitions. [2022-01-18 07:21:06,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-01-18 07:21:06,074 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 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 30 [2022-01-18 07:21:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:21:06,165 INFO L225 Difference]: With dead ends: 32331 [2022-01-18 07:21:06,165 INFO L226 Difference]: Without dead ends: 32331 [2022-01-18 07:21:06,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10220 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4495, Invalid=19375, Unknown=0, NotChecked=0, Total=23870 [2022-01-18 07:21:06,168 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 845 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:21:06,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 649 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:21:06,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32331 states. [2022-01-18 07:21:06,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32331 to 18359. [2022-01-18 07:21:06,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18359 states, 18358 states have (on average 3.830591567708901) internal successors, (70322), 18358 states have internal predecessors, (70322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18359 states to 18359 states and 70322 transitions. [2022-01-18 07:21:06,812 INFO L78 Accepts]: Start accepts. Automaton has 18359 states and 70322 transitions. Word has length 30 [2022-01-18 07:21:06,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:21:06,812 INFO L470 AbstractCegarLoop]: Abstraction has 18359 states and 70322 transitions. [2022-01-18 07:21:06,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 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 07:21:06,812 INFO L276 IsEmpty]: Start isEmpty. Operand 18359 states and 70322 transitions. [2022-01-18 07:21:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:21:06,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:21:06,844 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:21:06,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-01-18 07:21:07,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-01-18 07:21:07,044 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:21:07,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:21:07,045 INFO L85 PathProgramCache]: Analyzing trace with hash 657162873, now seen corresponding path program 73 times [2022-01-18 07:21:07,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:21:07,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459137875] [2022-01-18 07:21:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:21:07,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:21:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:07,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:21:07,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459137875] [2022-01-18 07:21:07,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459137875] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:21:07,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814716403] [2022-01-18 07:21:07,086 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:21:07,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:07,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:21:07,087 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:21:07,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-01-18 07:21:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:07,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:21:07,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:21:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:07,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:21:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:07,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814716403] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:21:07,358 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:21:07,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-01-18 07:21:07,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110066553] [2022-01-18 07:21:07,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:21:07,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 07:21:07,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:21:07,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 07:21:07,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:21:07,359 INFO L87 Difference]: Start difference. First operand 18359 states and 70322 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 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 07:21:09,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:21:09,710 INFO L93 Difference]: Finished difference Result 33551 states and 121071 transitions. [2022-01-18 07:21:09,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-01-18 07:21:09,710 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 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 30 [2022-01-18 07:21:09,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:21:09,804 INFO L225 Difference]: With dead ends: 33551 [2022-01-18 07:21:09,804 INFO L226 Difference]: Without dead ends: 33539 [2022-01-18 07:21:09,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9441 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4177, Invalid=18473, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 07:21:09,807 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 851 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:21:09,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 523 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:21:09,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33539 states. [2022-01-18 07:21:10,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33539 to 17993. [2022-01-18 07:21:10,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17993 states, 17992 states have (on average 3.842207647843486) internal successors, (69129), 17992 states have internal predecessors, (69129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:10,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17993 states to 17993 states and 69129 transitions. [2022-01-18 07:21:10,461 INFO L78 Accepts]: Start accepts. Automaton has 17993 states and 69129 transitions. Word has length 30 [2022-01-18 07:21:10,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:21:10,461 INFO L470 AbstractCegarLoop]: Abstraction has 17993 states and 69129 transitions. [2022-01-18 07:21:10,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 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 07:21:10,461 INFO L276 IsEmpty]: Start isEmpty. Operand 17993 states and 69129 transitions. [2022-01-18 07:21:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:21:10,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:21:10,492 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:21:10,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-01-18 07:21:10,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:10,693 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:21:10,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:21:10,693 INFO L85 PathProgramCache]: Analyzing trace with hash 2140297811, now seen corresponding path program 74 times [2022-01-18 07:21:10,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:21:10,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385666537] [2022-01-18 07:21:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:21:10,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:21:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:10,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:21:10,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385666537] [2022-01-18 07:21:10,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385666537] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:21:10,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404246498] [2022-01-18 07:21:10,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:21:10,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:10,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:21:10,736 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:21:10,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-01-18 07:21:10,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:21:10,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:21:10,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:21:10,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:21:10,881 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:10,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:21:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:10,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404246498] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:21:10,986 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:21:10,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-01-18 07:21:10,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497720080] [2022-01-18 07:21:10,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:21:10,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:21:10,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:21:10,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:21:10,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:21:10,987 INFO L87 Difference]: Start difference. First operand 17993 states and 69129 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:12,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:21:12,975 INFO L93 Difference]: Finished difference Result 33062 states and 119951 transitions. [2022-01-18 07:21:12,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-18 07:21:12,975 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:21:12,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:21:13,068 INFO L225 Difference]: With dead ends: 33062 [2022-01-18 07:21:13,068 INFO L226 Difference]: Without dead ends: 33026 [2022-01-18 07:21:13,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6665 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3024, Invalid=13746, Unknown=0, NotChecked=0, Total=16770 [2022-01-18 07:21:13,070 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 660 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:21:13,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 434 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:21:13,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33026 states. [2022-01-18 07:21:13,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33026 to 17977. [2022-01-18 07:21:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17977 states, 17976 states have (on average 3.8412883845126835) internal successors, (69051), 17976 states have internal predecessors, (69051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:13,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17977 states to 17977 states and 69051 transitions. [2022-01-18 07:21:13,808 INFO L78 Accepts]: Start accepts. Automaton has 17977 states and 69051 transitions. Word has length 30 [2022-01-18 07:21:13,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:21:13,808 INFO L470 AbstractCegarLoop]: Abstraction has 17977 states and 69051 transitions. [2022-01-18 07:21:13,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:13,809 INFO L276 IsEmpty]: Start isEmpty. Operand 17977 states and 69051 transitions. [2022-01-18 07:21:13,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:21:13,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:21:13,842 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:21:13,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-01-18 07:21:14,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:14,042 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:21:14,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:21:14,043 INFO L85 PathProgramCache]: Analyzing trace with hash -608597673, now seen corresponding path program 75 times [2022-01-18 07:21:14,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:21:14,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018961237] [2022-01-18 07:21:14,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:21:14,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:21:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:14,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:21:14,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018961237] [2022-01-18 07:21:14,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018961237] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:21:14,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243946996] [2022-01-18 07:21:14,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:21:14,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:14,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:21:14,089 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:21:14,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-01-18 07:21:14,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:21:14,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:21:14,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:21:14,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:21:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:14,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:21:14,326 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:14,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243946996] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:21:14,327 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:21:14,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-01-18 07:21:14,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838302718] [2022-01-18 07:21:14,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:21:14,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:21:14,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:21:14,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:21:14,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:21:14,327 INFO L87 Difference]: Start difference. First operand 17977 states and 69051 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 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 07:21:16,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:21:16,001 INFO L93 Difference]: Finished difference Result 32074 states and 117370 transitions. [2022-01-18 07:21:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-18 07:21:16,001 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 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 30 [2022-01-18 07:21:16,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:21:16,095 INFO L225 Difference]: With dead ends: 32074 [2022-01-18 07:21:16,095 INFO L226 Difference]: Without dead ends: 32038 [2022-01-18 07:21:16,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4230 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2126, Invalid=9004, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 07:21:16,096 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 548 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:21:16,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 323 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:21:16,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32038 states. [2022-01-18 07:21:16,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32038 to 17959. [2022-01-18 07:21:16,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17959 states, 17958 states have (on average 3.8416304710992315) internal successors, (68988), 17958 states have internal predecessors, (68988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:16,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17959 states to 17959 states and 68988 transitions. [2022-01-18 07:21:16,650 INFO L78 Accepts]: Start accepts. Automaton has 17959 states and 68988 transitions. Word has length 30 [2022-01-18 07:21:16,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:21:16,650 INFO L470 AbstractCegarLoop]: Abstraction has 17959 states and 68988 transitions. [2022-01-18 07:21:16,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 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 07:21:16,650 INFO L276 IsEmpty]: Start isEmpty. Operand 17959 states and 68988 transitions. [2022-01-18 07:21:16,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:21:16,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:21:16,681 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:21:16,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-01-18 07:21:16,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-01-18 07:21:16,882 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:21:16,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:21:16,882 INFO L85 PathProgramCache]: Analyzing trace with hash 109228903, now seen corresponding path program 76 times [2022-01-18 07:21:16,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:21:16,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310697802] [2022-01-18 07:21:16,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:21:16,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:21:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:16,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:21:16,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310697802] [2022-01-18 07:21:16,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310697802] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:21:16,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766110591] [2022-01-18 07:21:16,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:21:16,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:16,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:21:16,924 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:21:16,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-01-18 07:21:16,972 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:21:16,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:21:16,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:21:16,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:21:17,077 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:17,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:21:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:17,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766110591] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:21:17,190 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:21:17,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2022-01-18 07:21:17,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667106002] [2022-01-18 07:21:17,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:21:17,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:21:17,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:21:17,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:21:17,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:21:17,278 INFO L87 Difference]: Start difference. First operand 17959 states and 68988 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 07:21:19,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:21:19,455 INFO L93 Difference]: Finished difference Result 37595 states and 135163 transitions. [2022-01-18 07:21:19,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-18 07:21:19,456 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 30 [2022-01-18 07:21:19,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:21:19,564 INFO L225 Difference]: With dead ends: 37595 [2022-01-18 07:21:19,564 INFO L226 Difference]: Without dead ends: 37595 [2022-01-18 07:21:19,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7508 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3980, Invalid=13312, Unknown=0, NotChecked=0, Total=17292 [2022-01-18 07:21:19,566 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 977 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:21:19,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [977 Valid, 479 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:21:19,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37595 states. [2022-01-18 07:21:20,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37595 to 21412. [2022-01-18 07:21:20,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21412 states, 21411 states have (on average 3.908224744290318) internal successors, (83679), 21411 states have internal predecessors, (83679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:20,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21412 states to 21412 states and 83679 transitions. [2022-01-18 07:21:20,230 INFO L78 Accepts]: Start accepts. Automaton has 21412 states and 83679 transitions. Word has length 30 [2022-01-18 07:21:20,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:21:20,230 INFO L470 AbstractCegarLoop]: Abstraction has 21412 states and 83679 transitions. [2022-01-18 07:21:20,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 07:21:20,230 INFO L276 IsEmpty]: Start isEmpty. Operand 21412 states and 83679 transitions. [2022-01-18 07:21:20,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:21:20,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:21:20,267 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:21:20,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-01-18 07:21:20,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-01-18 07:21:20,467 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:21:20,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:21:20,467 INFO L85 PathProgramCache]: Analyzing trace with hash -946148491, now seen corresponding path program 77 times [2022-01-18 07:21:20,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:21:20,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964527740] [2022-01-18 07:21:20,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:21:20,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:21:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:20,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:21:20,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964527740] [2022-01-18 07:21:20,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964527740] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:21:20,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776577251] [2022-01-18 07:21:20,509 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:21:20,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:20,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:21:20,510 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:21:20,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-01-18 07:21:20,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 07:21:20,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:21:20,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:21:20,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:21:20,661 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:20,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:21:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:20,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776577251] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:21:20,774 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:21:20,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2022-01-18 07:21:20,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068641227] [2022-01-18 07:21:20,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:21:20,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:21:20,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:21:20,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:21:20,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:21:20,775 INFO L87 Difference]: Start difference. First operand 21412 states and 83679 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 07:21:23,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:21:23,475 INFO L93 Difference]: Finished difference Result 39919 states and 144205 transitions. [2022-01-18 07:21:23,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-01-18 07:21:23,476 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 30 [2022-01-18 07:21:23,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:21:23,591 INFO L225 Difference]: With dead ends: 39919 [2022-01-18 07:21:23,591 INFO L226 Difference]: Without dead ends: 39899 [2022-01-18 07:21:23,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11986 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=5282, Invalid=22108, Unknown=0, NotChecked=0, Total=27390 [2022-01-18 07:21:23,593 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 1105 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:21:23,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 396 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:21:23,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39899 states. [2022-01-18 07:21:24,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39899 to 21371. [2022-01-18 07:21:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21371 states, 21370 states have (on average 3.907440336920917) internal successors, (83502), 21370 states have internal predecessors, (83502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21371 states to 21371 states and 83502 transitions. [2022-01-18 07:21:24,344 INFO L78 Accepts]: Start accepts. Automaton has 21371 states and 83502 transitions. Word has length 30 [2022-01-18 07:21:24,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:21:24,344 INFO L470 AbstractCegarLoop]: Abstraction has 21371 states and 83502 transitions. [2022-01-18 07:21:24,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 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 07:21:24,344 INFO L276 IsEmpty]: Start isEmpty. Operand 21371 states and 83502 transitions. [2022-01-18 07:21:24,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:21:24,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:21:24,382 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:21:24,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-01-18 07:21:24,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:24,582 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:21:24,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:21:24,582 INFO L85 PathProgramCache]: Analyzing trace with hash -94905237, now seen corresponding path program 78 times [2022-01-18 07:21:24,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:21:24,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104060263] [2022-01-18 07:21:24,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:21:24,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:21:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:24,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:21:24,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104060263] [2022-01-18 07:21:24,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104060263] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:21:24,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102852208] [2022-01-18 07:21:24,638 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:21:24,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:24,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:21:24,639 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:21:24,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-01-18 07:21:24,697 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:21:24,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:21:24,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:21:24,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:21:24,814 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:24,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:21:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:24,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102852208] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:21:24,936 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:21:24,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2022-01-18 07:21:24,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459501059] [2022-01-18 07:21:24,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:21:24,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:21:24,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:21:24,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:21:24,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:21:24,937 INFO L87 Difference]: Start difference. First operand 21371 states and 83502 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:27,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:21:27,650 INFO L93 Difference]: Finished difference Result 41385 states and 149926 transitions. [2022-01-18 07:21:27,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-01-18 07:21:27,651 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:21:27,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:21:27,767 INFO L225 Difference]: With dead ends: 41385 [2022-01-18 07:21:27,767 INFO L226 Difference]: Without dead ends: 41385 [2022-01-18 07:21:27,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12490 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=6088, Invalid=19352, Unknown=0, NotChecked=0, Total=25440 [2022-01-18 07:21:27,768 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1054 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:21:27,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 435 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:21:27,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41385 states. [2022-01-18 07:21:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41385 to 21369. [2022-01-18 07:21:28,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21369 states, 21368 states have (on average 3.9074784724822162) internal successors, (83495), 21368 states have internal predecessors, (83495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:28,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21369 states to 21369 states and 83495 transitions. [2022-01-18 07:21:28,460 INFO L78 Accepts]: Start accepts. Automaton has 21369 states and 83495 transitions. Word has length 30 [2022-01-18 07:21:28,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:21:28,460 INFO L470 AbstractCegarLoop]: Abstraction has 21369 states and 83495 transitions. [2022-01-18 07:21:28,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:28,460 INFO L276 IsEmpty]: Start isEmpty. Operand 21369 states and 83495 transitions. [2022-01-18 07:21:28,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:21:28,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:21:28,497 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:21:28,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-01-18 07:21:28,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:28,697 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:21:28,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:21:28,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1102478425, now seen corresponding path program 79 times [2022-01-18 07:21:28,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:21:28,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539128905] [2022-01-18 07:21:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:21:28,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:21:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:28,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:21:28,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539128905] [2022-01-18 07:21:28,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539128905] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:21:28,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25576474] [2022-01-18 07:21:28,754 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:21:28,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:28,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:21:28,755 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:21:28,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-01-18 07:21:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:28,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:21:28,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:21:28,932 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:28,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:21:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:29,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25576474] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:21:29,050 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:21:29,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2022-01-18 07:21:29,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215403489] [2022-01-18 07:21:29,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:21:29,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:21:29,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:21:29,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:21:29,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:21:29,051 INFO L87 Difference]: Start difference. First operand 21369 states and 83495 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:32,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:21:32,384 INFO L93 Difference]: Finished difference Result 49381 states and 176111 transitions. [2022-01-18 07:21:32,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-01-18 07:21:32,384 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:21:32,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:21:32,531 INFO L225 Difference]: With dead ends: 49381 [2022-01-18 07:21:32,531 INFO L226 Difference]: Without dead ends: 49381 [2022-01-18 07:21:32,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17447 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=7299, Invalid=29757, Unknown=0, NotChecked=0, Total=37056 [2022-01-18 07:21:32,532 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 788 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:21:32,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 536 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:21:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49381 states. [2022-01-18 07:21:33,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49381 to 21351. [2022-01-18 07:21:33,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21351 states, 21350 states have (on average 3.906838407494145) internal successors, (83411), 21350 states have internal predecessors, (83411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:33,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21351 states to 21351 states and 83411 transitions. [2022-01-18 07:21:33,339 INFO L78 Accepts]: Start accepts. Automaton has 21351 states and 83411 transitions. Word has length 30 [2022-01-18 07:21:33,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:21:33,339 INFO L470 AbstractCegarLoop]: Abstraction has 21351 states and 83411 transitions. [2022-01-18 07:21:33,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:33,339 INFO L276 IsEmpty]: Start isEmpty. Operand 21351 states and 83411 transitions. [2022-01-18 07:21:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:21:33,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:21:33,376 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:21:33,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-01-18 07:21:33,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-01-18 07:21:33,577 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:21:33,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:21:33,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2072491833, now seen corresponding path program 80 times [2022-01-18 07:21:33,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:21:33,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933655027] [2022-01-18 07:21:33,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:21:33,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:21:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:33,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:21:33,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933655027] [2022-01-18 07:21:33,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933655027] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:21:33,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914923431] [2022-01-18 07:21:33,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:21:33,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:33,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:21:33,633 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:21:33,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-01-18 07:21:33,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:21:33,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:21:33,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:21:33,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:21:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:33,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:21:33,872 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:33,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914923431] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:21:33,872 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:21:33,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 20 [2022-01-18 07:21:33,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83652608] [2022-01-18 07:21:33,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:21:33,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:21:33,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:21:33,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:21:33,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:21:33,873 INFO L87 Difference]: Start difference. First operand 21351 states and 83411 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:35,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:21:35,737 INFO L93 Difference]: Finished difference Result 44753 states and 161002 transitions. [2022-01-18 07:21:35,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-01-18 07:21:35,737 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:21:35,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:21:36,009 INFO L225 Difference]: With dead ends: 44753 [2022-01-18 07:21:36,009 INFO L226 Difference]: Without dead ends: 44741 [2022-01-18 07:21:36,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6552 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3379, Invalid=12371, Unknown=0, NotChecked=0, Total=15750 [2022-01-18 07:21:36,010 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 903 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:21:36,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 361 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:21:36,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44741 states. [2022-01-18 07:21:36,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44741 to 21357. [2022-01-18 07:21:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21357 states, 21356 states have (on average 3.90672410563776) internal successors, (83432), 21356 states have internal predecessors, (83432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:36,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21357 states to 21357 states and 83432 transitions. [2022-01-18 07:21:36,725 INFO L78 Accepts]: Start accepts. Automaton has 21357 states and 83432 transitions. Word has length 30 [2022-01-18 07:21:36,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:21:36,726 INFO L470 AbstractCegarLoop]: Abstraction has 21357 states and 83432 transitions. [2022-01-18 07:21:36,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:36,726 INFO L276 IsEmpty]: Start isEmpty. Operand 21357 states and 83432 transitions. [2022-01-18 07:21:36,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:21:36,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:21:36,762 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:21:36,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-01-18 07:21:36,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-01-18 07:21:36,964 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:21:36,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:21:36,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1951965771, now seen corresponding path program 81 times [2022-01-18 07:21:36,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:21:36,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646258506] [2022-01-18 07:21:36,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:21:36,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:21:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:37,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:21:37,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646258506] [2022-01-18 07:21:37,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646258506] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:21:37,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565825837] [2022-01-18 07:21:37,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:21:37,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:37,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:21:37,007 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:21:37,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-01-18 07:21:37,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:21:37,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:21:37,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 07:21:37,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:21:37,184 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-18 07:21:37,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:21:37,269 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:21:37,365 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:21:37,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:21:37,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:21:37,517 INFO L353 Elim1Store]: treesize reduction 10, result has 47.4 percent of original size [2022-01-18 07:21:37,517 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 22 [2022-01-18 07:21:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:21:37,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565825837] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:21:37,691 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:21:37,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 33 [2022-01-18 07:21:37,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820760149] [2022-01-18 07:21:37,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:21:37,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 07:21:37,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:21:37,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 07:21:37,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 07:21:37,692 INFO L87 Difference]: Start difference. First operand 21357 states and 83432 transitions. Second operand has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:47,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:21:47,693 INFO L93 Difference]: Finished difference Result 55083 states and 197153 transitions. [2022-01-18 07:21:47,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2022-01-18 07:21:47,693 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:21:47,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:21:47,879 INFO L225 Difference]: With dead ends: 55083 [2022-01-18 07:21:47,879 INFO L226 Difference]: Without dead ends: 55048 [2022-01-18 07:21:47,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 58 SyntacticMatches, 18 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42724 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=14090, Invalid=79240, Unknown=0, NotChecked=0, Total=93330 [2022-01-18 07:21:47,888 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 1220 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 3518 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 4132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 3518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 347 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:21:47,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 1358 Invalid, 4132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 3518 Invalid, 0 Unknown, 347 Unchecked, 1.6s Time] [2022-01-18 07:21:47,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55048 states. [2022-01-18 07:21:48,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55048 to 23406. [2022-01-18 07:21:48,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23406 states, 23405 states have (on average 3.9390301217688526) internal successors, (92193), 23405 states have internal predecessors, (92193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:48,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23406 states to 23406 states and 92193 transitions. [2022-01-18 07:21:48,973 INFO L78 Accepts]: Start accepts. Automaton has 23406 states and 92193 transitions. Word has length 30 [2022-01-18 07:21:48,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:21:48,973 INFO L470 AbstractCegarLoop]: Abstraction has 23406 states and 92193 transitions. [2022-01-18 07:21:48,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:48,973 INFO L276 IsEmpty]: Start isEmpty. Operand 23406 states and 92193 transitions. [2022-01-18 07:21:49,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:21:49,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:21:49,014 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:21:49,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-01-18 07:21:49,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:49,214 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:21:49,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:21:49,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1366937585, now seen corresponding path program 82 times [2022-01-18 07:21:49,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:21:49,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939679805] [2022-01-18 07:21:49,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:21:49,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:21:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:49,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:21:49,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939679805] [2022-01-18 07:21:49,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939679805] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:21:49,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925499325] [2022-01-18 07:21:49,256 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:21:49,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:49,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:21:49,257 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:21:49,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-01-18 07:21:49,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:21:49,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:21:49,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:21:49,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:21:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:49,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:21:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:49,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925499325] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:21:49,515 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:21:49,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 18 [2022-01-18 07:21:49,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965564431] [2022-01-18 07:21:49,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:21:49,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:21:49,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:21:49,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:21:49,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:21:49,516 INFO L87 Difference]: Start difference. First operand 23406 states and 92193 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 07:21:50,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:21:50,895 INFO L93 Difference]: Finished difference Result 50079 states and 185865 transitions. [2022-01-18 07:21:50,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 07:21:50,895 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 30 [2022-01-18 07:21:50,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:21:51,061 INFO L225 Difference]: With dead ends: 50079 [2022-01-18 07:21:51,061 INFO L226 Difference]: Without dead ends: 50043 [2022-01-18 07:21:51,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3255 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1775, Invalid=6781, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 07:21:51,062 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 582 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:21:51,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 323 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:21:51,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50043 states. [2022-01-18 07:21:51,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50043 to 24787. [2022-01-18 07:21:51,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24787 states, 24786 states have (on average 3.956507705963044) internal successors, (98066), 24786 states have internal predecessors, (98066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24787 states to 24787 states and 98066 transitions. [2022-01-18 07:21:52,052 INFO L78 Accepts]: Start accepts. Automaton has 24787 states and 98066 transitions. Word has length 30 [2022-01-18 07:21:52,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:21:52,052 INFO L470 AbstractCegarLoop]: Abstraction has 24787 states and 98066 transitions. [2022-01-18 07:21:52,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 07:21:52,052 INFO L276 IsEmpty]: Start isEmpty. Operand 24787 states and 98066 transitions. [2022-01-18 07:21:52,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:21:52,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:21:52,095 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:21:52,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-01-18 07:21:52,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:52,296 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:21:52,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:21:52,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1436024979, now seen corresponding path program 83 times [2022-01-18 07:21:52,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:21:52,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27962616] [2022-01-18 07:21:52,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:21:52,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:21:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:52,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:21:52,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27962616] [2022-01-18 07:21:52,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27962616] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:21:52,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486945408] [2022-01-18 07:21:52,337 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:21:52,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:52,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:21:52,338 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:21:52,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-01-18 07:21:52,389 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:21:52,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:21:52,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:21:52,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:21:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:52,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:21:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:52,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486945408] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:21:52,562 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:21:52,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 18 [2022-01-18 07:21:52,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907359910] [2022-01-18 07:21:52,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:21:52,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:21:52,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:21:52,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:21:52,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:21:52,563 INFO L87 Difference]: Start difference. First operand 24787 states and 98066 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 07:21:54,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:21:54,121 INFO L93 Difference]: Finished difference Result 51358 states and 189473 transitions. [2022-01-18 07:21:54,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-18 07:21:54,121 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 30 [2022-01-18 07:21:54,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:21:54,288 INFO L225 Difference]: With dead ends: 51358 [2022-01-18 07:21:54,288 INFO L226 Difference]: Without dead ends: 51346 [2022-01-18 07:21:54,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4015 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2125, Invalid=7975, Unknown=0, NotChecked=0, Total=10100 [2022-01-18 07:21:54,289 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 638 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:21:54,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 328 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:21:54,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51346 states. [2022-01-18 07:21:55,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51346 to 24934. [2022-01-18 07:21:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24934 states, 24933 states have (on average 3.953114346448482) internal successors, (98563), 24933 states have internal predecessors, (98563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:55,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24934 states to 24934 states and 98563 transitions. [2022-01-18 07:21:55,280 INFO L78 Accepts]: Start accepts. Automaton has 24934 states and 98563 transitions. Word has length 30 [2022-01-18 07:21:55,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:21:55,280 INFO L470 AbstractCegarLoop]: Abstraction has 24934 states and 98563 transitions. [2022-01-18 07:21:55,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 07:21:55,280 INFO L276 IsEmpty]: Start isEmpty. Operand 24934 states and 98563 transitions. [2022-01-18 07:21:55,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:21:55,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:21:55,324 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:21:55,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-01-18 07:21:55,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2022-01-18 07:21:55,525 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:21:55,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:21:55,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1588868973, now seen corresponding path program 84 times [2022-01-18 07:21:55,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:21:55,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471647439] [2022-01-18 07:21:55,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:21:55,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:21:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:55,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:21:55,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471647439] [2022-01-18 07:21:55,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471647439] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:21:55,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499695951] [2022-01-18 07:21:55,566 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:21:55,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:55,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:21:55,567 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:21:55,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-01-18 07:21:55,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:21:55,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:21:55,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:21:55,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:21:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:55,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:21:55,803 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:55,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499695951] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:21:55,804 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:21:55,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 18 [2022-01-18 07:21:55,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725035263] [2022-01-18 07:21:55,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:21:55,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:21:55,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:21:55,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:21:55,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:21:55,804 INFO L87 Difference]: Start difference. First operand 24934 states and 98563 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 07:21:57,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:21:57,506 INFO L93 Difference]: Finished difference Result 52042 states and 191452 transitions. [2022-01-18 07:21:57,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-18 07:21:57,507 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 30 [2022-01-18 07:21:57,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:21:57,675 INFO L225 Difference]: With dead ends: 52042 [2022-01-18 07:21:57,675 INFO L226 Difference]: Without dead ends: 52042 [2022-01-18 07:21:57,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5759 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2804, Invalid=10536, Unknown=0, NotChecked=0, Total=13340 [2022-01-18 07:21:57,677 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 696 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:21:57,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 373 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:21:57,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52042 states. [2022-01-18 07:21:58,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52042 to 24804. [2022-01-18 07:21:58,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24804 states, 24803 states have (on average 3.9582308591702615) internal successors, (98176), 24803 states have internal predecessors, (98176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:21:58,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24804 states to 24804 states and 98176 transitions. [2022-01-18 07:21:58,688 INFO L78 Accepts]: Start accepts. Automaton has 24804 states and 98176 transitions. Word has length 30 [2022-01-18 07:21:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:21:58,689 INFO L470 AbstractCegarLoop]: Abstraction has 24804 states and 98176 transitions. [2022-01-18 07:21:58,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 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 07:21:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 24804 states and 98176 transitions. [2022-01-18 07:21:58,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:21:58,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:21:58,732 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:21:58,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-01-18 07:21:58,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-01-18 07:21:58,932 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:21:58,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:21:58,933 INFO L85 PathProgramCache]: Analyzing trace with hash -319949037, now seen corresponding path program 85 times [2022-01-18 07:21:58,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:21:58,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487530274] [2022-01-18 07:21:58,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:21:58,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:21:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:58,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:21:58,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487530274] [2022-01-18 07:21:58,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487530274] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:21:58,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605537098] [2022-01-18 07:21:58,973 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:21:58,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:21:58,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:21:58,974 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:21:58,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-01-18 07:21:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:21:59,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:21:59,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:21:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:59,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:21:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:21:59,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605537098] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:21:59,185 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:21:59,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-01-18 07:21:59,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875069786] [2022-01-18 07:21:59,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:21:59,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:21:59,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:21:59,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:21:59,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:21:59,186 INFO L87 Difference]: Start difference. First operand 24804 states and 98176 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:00,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:22:00,267 INFO L93 Difference]: Finished difference Result 43209 states and 161885 transitions. [2022-01-18 07:22:00,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 07:22:00,267 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:22:00,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:22:00,397 INFO L225 Difference]: With dead ends: 43209 [2022-01-18 07:22:00,397 INFO L226 Difference]: Without dead ends: 43173 [2022-01-18 07:22:00,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1236, Invalid=4770, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 07:22:00,398 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 626 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:22:00,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 264 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:22:00,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43173 states. [2022-01-18 07:22:01,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43173 to 24838. [2022-01-18 07:22:01,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24838 states, 24837 states have (on average 3.957523050287877) internal successors, (98293), 24837 states have internal predecessors, (98293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:01,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24838 states to 24838 states and 98293 transitions. [2022-01-18 07:22:01,290 INFO L78 Accepts]: Start accepts. Automaton has 24838 states and 98293 transitions. Word has length 30 [2022-01-18 07:22:01,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:22:01,290 INFO L470 AbstractCegarLoop]: Abstraction has 24838 states and 98293 transitions. [2022-01-18 07:22:01,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:01,290 INFO L276 IsEmpty]: Start isEmpty. Operand 24838 states and 98293 transitions. [2022-01-18 07:22:01,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:22:01,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:22:01,333 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:22:01,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-01-18 07:22:01,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-01-18 07:22:01,534 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:22:01,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:22:01,534 INFO L85 PathProgramCache]: Analyzing trace with hash 382580375, now seen corresponding path program 86 times [2022-01-18 07:22:01,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:22:01,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228450951] [2022-01-18 07:22:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:22:01,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:22:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:22:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:01,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:22:01,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228450951] [2022-01-18 07:22:01,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228450951] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:22:01,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142454643] [2022-01-18 07:22:01,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:22:01,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:01,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:22:01,586 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:22:01,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-01-18 07:22:01,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:22:01,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:22:01,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:22:01,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:22:01,718 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:01,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:22:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:01,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142454643] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:22:01,804 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:22:01,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-01-18 07:22:01,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666845601] [2022-01-18 07:22:01,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:22:01,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:22:01,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:22:01,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:22:01,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:22:01,804 INFO L87 Difference]: Start difference. First operand 24838 states and 98293 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:02,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:22:02,737 INFO L93 Difference]: Finished difference Result 42696 states and 160691 transitions. [2022-01-18 07:22:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 07:22:02,738 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:22:02,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:22:02,864 INFO L225 Difference]: With dead ends: 42696 [2022-01-18 07:22:02,864 INFO L226 Difference]: Without dead ends: 42672 [2022-01-18 07:22:02,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1626 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1031, Invalid=3661, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 07:22:02,865 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 490 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:22:02,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 248 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:22:02,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42672 states. [2022-01-18 07:22:03,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42672 to 25046. [2022-01-18 07:22:03,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25046 states, 25045 states have (on average 3.9503693351966462) internal successors, (98937), 25045 states have internal predecessors, (98937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:03,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25046 states to 25046 states and 98937 transitions. [2022-01-18 07:22:03,919 INFO L78 Accepts]: Start accepts. Automaton has 25046 states and 98937 transitions. Word has length 30 [2022-01-18 07:22:03,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:22:03,919 INFO L470 AbstractCegarLoop]: Abstraction has 25046 states and 98937 transitions. [2022-01-18 07:22:03,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:03,919 INFO L276 IsEmpty]: Start isEmpty. Operand 25046 states and 98937 transitions. [2022-01-18 07:22:03,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:22:03,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:22:03,968 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:22:03,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-01-18 07:22:04,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-01-18 07:22:04,169 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:22:04,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:22:04,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1152351895, now seen corresponding path program 87 times [2022-01-18 07:22:04,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:22:04,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984820969] [2022-01-18 07:22:04,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:22:04,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:22:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:22:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:04,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:22:04,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984820969] [2022-01-18 07:22:04,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984820969] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:22:04,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871641966] [2022-01-18 07:22:04,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:22:04,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:04,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:22:04,213 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:22:04,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-01-18 07:22:04,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:22:04,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:22:04,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:22:04,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:22:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:04,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:22:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:04,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871641966] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:22:04,433 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:22:04,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-01-18 07:22:04,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870825078] [2022-01-18 07:22:04,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:22:04,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:22:04,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:22:04,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:22:04,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:22:04,434 INFO L87 Difference]: Start difference. First operand 25046 states and 98937 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:05,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:22:05,478 INFO L93 Difference]: Finished difference Result 43054 states and 161902 transitions. [2022-01-18 07:22:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 07:22:05,478 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:22:05,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:22:05,618 INFO L225 Difference]: With dead ends: 43054 [2022-01-18 07:22:05,619 INFO L226 Difference]: Without dead ends: 43046 [2022-01-18 07:22:05,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1705 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1074, Invalid=3756, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 07:22:05,620 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 482 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:22:05,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 272 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:22:05,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43046 states. [2022-01-18 07:22:06,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43046 to 27549. [2022-01-18 07:22:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27549 states, 27548 states have (on average 3.954152751560912) internal successors, (108929), 27548 states have internal predecessors, (108929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:06,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27549 states to 27549 states and 108929 transitions. [2022-01-18 07:22:06,625 INFO L78 Accepts]: Start accepts. Automaton has 27549 states and 108929 transitions. Word has length 30 [2022-01-18 07:22:06,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:22:06,625 INFO L470 AbstractCegarLoop]: Abstraction has 27549 states and 108929 transitions. [2022-01-18 07:22:06,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 27549 states and 108929 transitions. [2022-01-18 07:22:06,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:22:06,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:22:06,678 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:22:06,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-01-18 07:22:06,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:06,883 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:22:06,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:22:06,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1422861587, now seen corresponding path program 88 times [2022-01-18 07:22:06,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:22:06,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249208381] [2022-01-18 07:22:06,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:22:06,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:22:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:22:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:06,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:22:06,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249208381] [2022-01-18 07:22:06,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249208381] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:22:06,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251925969] [2022-01-18 07:22:06,931 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:22:06,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:06,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:22:06,932 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:22:06,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-01-18 07:22:06,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:22:06,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:22:06,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:22:06,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:22:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:07,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:22:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:07,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251925969] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:22:07,248 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:22:07,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-01-18 07:22:07,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026409488] [2022-01-18 07:22:07,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:22:07,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:22:07,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:22:07,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:22:07,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:22:07,248 INFO L87 Difference]: Start difference. First operand 27549 states and 108929 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:08,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:22:08,362 INFO L93 Difference]: Finished difference Result 43663 states and 163665 transitions. [2022-01-18 07:22:08,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 07:22:08,363 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:22:08,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:22:08,493 INFO L225 Difference]: With dead ends: 43663 [2022-01-18 07:22:08,494 INFO L226 Difference]: Without dead ends: 43663 [2022-01-18 07:22:08,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2568 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1452, Invalid=5190, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 07:22:08,495 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 600 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:22:08,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 312 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:22:08,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43663 states. [2022-01-18 07:22:09,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43663 to 27467. [2022-01-18 07:22:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27467 states, 27466 states have (on average 3.9571106094808126) internal successors, (108686), 27466 states have internal predecessors, (108686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:09,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27467 states to 27467 states and 108686 transitions. [2022-01-18 07:22:09,434 INFO L78 Accepts]: Start accepts. Automaton has 27467 states and 108686 transitions. Word has length 30 [2022-01-18 07:22:09,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:22:09,435 INFO L470 AbstractCegarLoop]: Abstraction has 27467 states and 108686 transitions. [2022-01-18 07:22:09,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:09,435 INFO L276 IsEmpty]: Start isEmpty. Operand 27467 states and 108686 transitions. [2022-01-18 07:22:09,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:22:09,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:22:09,487 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:22:09,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-01-18 07:22:09,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:09,688 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:22:09,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:22:09,688 INFO L85 PathProgramCache]: Analyzing trace with hash 18202575, now seen corresponding path program 27 times [2022-01-18 07:22:09,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:22:09,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843988494] [2022-01-18 07:22:09,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:22:09,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:22:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:22:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:09,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:22:09,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843988494] [2022-01-18 07:22:09,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843988494] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:22:09,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476904318] [2022-01-18 07:22:09,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:22:09,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:09,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:22:09,728 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:22:09,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-01-18 07:22:09,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:22:09,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:22:09,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 07:22:09,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:22:09,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:22:09,963 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:22:09,964 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:22:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 07:22:10,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:22:10,135 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:22:10,135 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:22:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 07:22:10,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476904318] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:22:10,375 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:22:10,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-18 07:22:10,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174379490] [2022-01-18 07:22:10,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:22:10,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:22:10,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:22:10,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:22:10,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:22:10,375 INFO L87 Difference]: Start difference. First operand 27467 states and 108686 transitions. Second operand has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 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 07:22:12,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:22:12,247 INFO L93 Difference]: Finished difference Result 44321 states and 168181 transitions. [2022-01-18 07:22:12,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-18 07:22:12,247 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 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 30 [2022-01-18 07:22:12,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:22:12,380 INFO L225 Difference]: With dead ends: 44321 [2022-01-18 07:22:12,380 INFO L226 Difference]: Without dead ends: 44315 [2022-01-18 07:22:12,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2427 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1140, Invalid=6516, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 07:22:12,381 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 417 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 642 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:22:12,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 667 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 992 Invalid, 0 Unknown, 642 Unchecked, 0.5s Time] [2022-01-18 07:22:12,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44315 states. [2022-01-18 07:22:13,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44315 to 27675. [2022-01-18 07:22:13,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27675 states, 27674 states have (on average 3.9484353544843533) internal successors, (109269), 27674 states have internal predecessors, (109269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:13,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27675 states to 27675 states and 109269 transitions. [2022-01-18 07:22:13,242 INFO L78 Accepts]: Start accepts. Automaton has 27675 states and 109269 transitions. Word has length 30 [2022-01-18 07:22:13,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:22:13,242 INFO L470 AbstractCegarLoop]: Abstraction has 27675 states and 109269 transitions. [2022-01-18 07:22:13,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 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 07:22:13,242 INFO L276 IsEmpty]: Start isEmpty. Operand 27675 states and 109269 transitions. [2022-01-18 07:22:13,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:22:13,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:22:13,294 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:22:13,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-01-18 07:22:13,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2022-01-18 07:22:13,495 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:22:13,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:22:13,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1450322577, now seen corresponding path program 28 times [2022-01-18 07:22:13,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:22:13,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875751027] [2022-01-18 07:22:13,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:22:13,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:22:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:22:13,534 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:13,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:22:13,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875751027] [2022-01-18 07:22:13,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875751027] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:22:13,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569617250] [2022-01-18 07:22:13,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:22:13,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:13,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:22:13,536 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:22:13,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-01-18 07:22:13,588 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:22:13,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:22:13,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:22:13,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:22:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:13,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:22:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:13,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569617250] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:22:13,710 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:22:13,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2022-01-18 07:22:13,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706190462] [2022-01-18 07:22:13,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:22:13,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:22:13,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:22:13,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:22:13,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:22:13,710 INFO L87 Difference]: Start difference. First operand 27675 states and 109269 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:14,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:22:14,282 INFO L93 Difference]: Finished difference Result 37644 states and 144252 transitions. [2022-01-18 07:22:14,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 07:22:14,282 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:22:14,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:22:14,610 INFO L225 Difference]: With dead ends: 37644 [2022-01-18 07:22:14,610 INFO L226 Difference]: Without dead ends: 37644 [2022-01-18 07:22:14,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=388, Invalid=1094, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 07:22:14,610 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 229 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:22:14,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 237 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:22:14,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37644 states. [2022-01-18 07:22:15,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37644 to 27701. [2022-01-18 07:22:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27701 states, 27700 states have (on average 3.947509025270758) internal successors, (109346), 27700 states have internal predecessors, (109346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27701 states to 27701 states and 109346 transitions. [2022-01-18 07:22:15,438 INFO L78 Accepts]: Start accepts. Automaton has 27701 states and 109346 transitions. Word has length 30 [2022-01-18 07:22:15,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:22:15,438 INFO L470 AbstractCegarLoop]: Abstraction has 27701 states and 109346 transitions. [2022-01-18 07:22:15,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 27701 states and 109346 transitions. [2022-01-18 07:22:15,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:22:15,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:22:15,497 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:22:15,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-01-18 07:22:15,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:15,697 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:22:15,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:22:15,697 INFO L85 PathProgramCache]: Analyzing trace with hash -879017091, now seen corresponding path program 29 times [2022-01-18 07:22:15,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:22:15,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281027760] [2022-01-18 07:22:15,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:22:15,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:22:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:22:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:15,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:22:15,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281027760] [2022-01-18 07:22:15,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281027760] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:22:15,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092338887] [2022-01-18 07:22:15,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:22:15,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:15,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:22:15,731 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:22:15,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-01-18 07:22:15,786 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 07:22:15,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:22:15,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:22:15,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:22:15,845 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:15,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:22:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:15,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092338887] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:22:15,904 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:22:15,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-01-18 07:22:15,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493771644] [2022-01-18 07:22:15,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:22:15,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 07:22:15,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:22:15,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 07:22:15,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:22:15,904 INFO L87 Difference]: Start difference. First operand 27701 states and 109346 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:16,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:22:16,463 INFO L93 Difference]: Finished difference Result 37210 states and 143165 transitions. [2022-01-18 07:22:16,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 07:22:16,463 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:22:16,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:22:16,572 INFO L225 Difference]: With dead ends: 37210 [2022-01-18 07:22:16,572 INFO L226 Difference]: Without dead ends: 37206 [2022-01-18 07:22:16,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=266, Invalid=726, Unknown=0, NotChecked=0, Total=992 [2022-01-18 07:22:16,572 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 200 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:22:16,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 129 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:22:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37206 states. [2022-01-18 07:22:17,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37206 to 27701. [2022-01-18 07:22:17,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27701 states, 27700 states have (on average 3.947436823104693) internal successors, (109344), 27700 states have internal predecessors, (109344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27701 states to 27701 states and 109344 transitions. [2022-01-18 07:22:17,432 INFO L78 Accepts]: Start accepts. Automaton has 27701 states and 109344 transitions. Word has length 30 [2022-01-18 07:22:17,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:22:17,432 INFO L470 AbstractCegarLoop]: Abstraction has 27701 states and 109344 transitions. [2022-01-18 07:22:17,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 27701 states and 109344 transitions. [2022-01-18 07:22:17,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:22:17,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:22:17,490 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:22:17,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-01-18 07:22:17,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:17,690 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:22:17,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:22:17,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1727886413, now seen corresponding path program 30 times [2022-01-18 07:22:17,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:22:17,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001011065] [2022-01-18 07:22:17,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:22:17,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:22:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:22:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:17,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:22:17,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001011065] [2022-01-18 07:22:17,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001011065] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:22:17,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337455106] [2022-01-18 07:22:17,733 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:22:17,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:17,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:22:17,734 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:22:17,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-01-18 07:22:17,790 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 07:22:17,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:22:17,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:22:17,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:22:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:17,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:22:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:17,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337455106] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:22:17,914 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:22:17,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-01-18 07:22:17,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065460375] [2022-01-18 07:22:17,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:22:17,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 07:22:17,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:22:17,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 07:22:17,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-01-18 07:22:17,915 INFO L87 Difference]: Start difference. First operand 27701 states and 109344 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:18,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:22:18,391 INFO L93 Difference]: Finished difference Result 37382 states and 143633 transitions. [2022-01-18 07:22:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 07:22:18,392 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:22:18,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:22:18,680 INFO L225 Difference]: With dead ends: 37382 [2022-01-18 07:22:18,680 INFO L226 Difference]: Without dead ends: 37370 [2022-01-18 07:22:18,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 07:22:18,681 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 215 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:22:18,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 145 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:22:18,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37370 states. [2022-01-18 07:22:19,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37370 to 27817. [2022-01-18 07:22:19,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27817 states, 27816 states have (on average 3.9433419614610297) internal successors, (109688), 27816 states have internal predecessors, (109688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27817 states to 27817 states and 109688 transitions. [2022-01-18 07:22:19,377 INFO L78 Accepts]: Start accepts. Automaton has 27817 states and 109688 transitions. Word has length 30 [2022-01-18 07:22:19,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:22:19,377 INFO L470 AbstractCegarLoop]: Abstraction has 27817 states and 109688 transitions. [2022-01-18 07:22:19,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 27817 states and 109688 transitions. [2022-01-18 07:22:19,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:22:19,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:22:19,538 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:22:19,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-01-18 07:22:19,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2022-01-18 07:22:19,739 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:22:19,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:22:19,739 INFO L85 PathProgramCache]: Analyzing trace with hash 54707119, now seen corresponding path program 89 times [2022-01-18 07:22:19,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:22:19,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354562503] [2022-01-18 07:22:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:22:19,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:22:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:22:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:19,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:22:19,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354562503] [2022-01-18 07:22:19,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354562503] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:22:19,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900075931] [2022-01-18 07:22:19,780 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:22:19,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:19,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:22:19,781 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:22:19,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-01-18 07:22:19,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:22:19,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:22:19,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:22:19,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:22:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:19,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:22:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:22:20,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900075931] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:22:20,039 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:22:20,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 20 [2022-01-18 07:22:20,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699050199] [2022-01-18 07:22:20,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:22:20,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:22:20,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:22:20,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:22:20,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:22:20,039 INFO L87 Difference]: Start difference. First operand 27817 states and 109688 transitions. Second operand has 20 states, 20 states have (on average 3.1) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:22,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:22:22,527 INFO L93 Difference]: Finished difference Result 44676 states and 163176 transitions. [2022-01-18 07:22:22,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-01-18 07:22:22,527 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.1) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 07:22:22,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:22:22,669 INFO L225 Difference]: With dead ends: 44676 [2022-01-18 07:22:22,669 INFO L226 Difference]: Without dead ends: 44676 [2022-01-18 07:22:22,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8340 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4131, Invalid=16461, Unknown=0, NotChecked=0, Total=20592 [2022-01-18 07:22:22,671 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 710 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:22:22,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 505 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:22:22,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44676 states. [2022-01-18 07:22:23,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44676 to 28023. [2022-01-18 07:22:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28023 states, 28022 states have (on average 3.935871815002498) internal successors, (110291), 28022 states have internal predecessors, (110291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28023 states to 28023 states and 110291 transitions. [2022-01-18 07:22:23,657 INFO L78 Accepts]: Start accepts. Automaton has 28023 states and 110291 transitions. Word has length 30 [2022-01-18 07:22:23,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:22:23,657 INFO L470 AbstractCegarLoop]: Abstraction has 28023 states and 110291 transitions. [2022-01-18 07:22:23,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.1) internal successors, (62), 20 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:23,657 INFO L276 IsEmpty]: Start isEmpty. Operand 28023 states and 110291 transitions. [2022-01-18 07:22:23,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 07:22:23,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:22:23,710 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:22:23,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-01-18 07:22:23,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:23,910 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:22:23,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:22:23,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1978483925, now seen corresponding path program 90 times [2022-01-18 07:22:23,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:22:23,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924209038] [2022-01-18 07:22:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:22:23,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:22:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:22:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:23,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:22:23,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924209038] [2022-01-18 07:22:23,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924209038] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:22:23,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102791625] [2022-01-18 07:22:23,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:22:23,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:23,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:22:23,962 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:22:23,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-01-18 07:22:24,016 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:22:24,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:22:24,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:22:24,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:22:24,124 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:24,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:22:24,336 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:22:24,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102791625] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:22:24,336 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:22:24,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 20 [2022-01-18 07:22:24,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084389374] [2022-01-18 07:22:24,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:22:24,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:22:24,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:22:24,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:22:24,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:22:24,337 INFO L87 Difference]: Start difference. First operand 28023 states and 110291 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 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 07:22:27,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:22:27,070 INFO L93 Difference]: Finished difference Result 52292 states and 190560 transitions. [2022-01-18 07:22:27,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-18 07:22:27,071 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 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 30 [2022-01-18 07:22:27,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:22:27,250 INFO L225 Difference]: With dead ends: 52292 [2022-01-18 07:22:27,251 INFO L226 Difference]: Without dead ends: 52292 [2022-01-18 07:22:27,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9910 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4480, Invalid=19390, Unknown=0, NotChecked=0, Total=23870 [2022-01-18 07:22:27,252 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 699 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:22:27,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 513 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1608 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:22:27,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52292 states. [2022-01-18 07:22:28,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52292 to 27802. [2022-01-18 07:22:28,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27802 states, 27801 states have (on average 3.942987662314305) internal successors, (109619), 27801 states have internal predecessors, (109619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:28,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27802 states to 27802 states and 109619 transitions. [2022-01-18 07:22:28,291 INFO L78 Accepts]: Start accepts. Automaton has 27802 states and 109619 transitions. Word has length 30 [2022-01-18 07:22:28,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:22:28,291 INFO L470 AbstractCegarLoop]: Abstraction has 27802 states and 109619 transitions. [2022-01-18 07:22:28,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 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 07:22:28,291 INFO L276 IsEmpty]: Start isEmpty. Operand 27802 states and 109619 transitions. [2022-01-18 07:22:28,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:22:28,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:22:28,345 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:22:28,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2022-01-18 07:22:28,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:28,545 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:22:28,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:22:28,546 INFO L85 PathProgramCache]: Analyzing trace with hash 711634513, now seen corresponding path program 91 times [2022-01-18 07:22:28,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:22:28,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650328479] [2022-01-18 07:22:28,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:22:28,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:22:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:22:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:28,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:22:28,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650328479] [2022-01-18 07:22:28,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650328479] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:22:28,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823833190] [2022-01-18 07:22:28,948 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:22:28,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:28,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:22:28,949 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:22:28,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-01-18 07:22:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:22:29,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:22:29,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:22:29,261 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:22:29,316 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:22:29,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:22:29,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:22:29,356 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:22:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:29,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:22:29,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:22:29,646 INFO L353 Elim1Store]: treesize reduction 10, result has 47.4 percent of original size [2022-01-18 07:22:29,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 22 [2022-01-18 07:22:30,008 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:30,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823833190] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:22:30,009 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:22:30,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-01-18 07:22:30,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907553483] [2022-01-18 07:22:30,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:22:30,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 07:22:30,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:22:30,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 07:22:30,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1081, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 07:22:30,009 INFO L87 Difference]: Start difference. First operand 27802 states and 109619 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:22:34,270 INFO L93 Difference]: Finished difference Result 36879 states and 140874 transitions. [2022-01-18 07:22:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 07:22:34,270 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:22:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:22:34,375 INFO L225 Difference]: With dead ends: 36879 [2022-01-18 07:22:34,375 INFO L226 Difference]: Without dead ends: 36616 [2022-01-18 07:22:34,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3055 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1832, Invalid=6910, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 07:22:34,376 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 841 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:22:34,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 384 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1382 Invalid, 0 Unknown, 215 Unchecked, 0.8s Time] [2022-01-18 07:22:34,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36616 states. [2022-01-18 07:22:35,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36616 to 27982. [2022-01-18 07:22:35,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27982 states, 27981 states have (on average 3.940352381973482) internal successors, (110255), 27981 states have internal predecessors, (110255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:35,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27982 states to 27982 states and 110255 transitions. [2022-01-18 07:22:35,137 INFO L78 Accepts]: Start accepts. Automaton has 27982 states and 110255 transitions. Word has length 32 [2022-01-18 07:22:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:22:35,137 INFO L470 AbstractCegarLoop]: Abstraction has 27982 states and 110255 transitions. [2022-01-18 07:22:35,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:35,137 INFO L276 IsEmpty]: Start isEmpty. Operand 27982 states and 110255 transitions. [2022-01-18 07:22:35,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:22:35,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:22:35,191 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:22:35,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-01-18 07:22:35,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-01-18 07:22:35,391 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:22:35,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:22:35,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1875228809, now seen corresponding path program 92 times [2022-01-18 07:22:35,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:22:35,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222241903] [2022-01-18 07:22:35,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:22:35,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:22:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:22:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:35,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:22:35,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222241903] [2022-01-18 07:22:35,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222241903] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:22:35,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006846693] [2022-01-18 07:22:35,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:22:35,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:35,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:22:35,797 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:22:35,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-01-18 07:22:35,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:22:35,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:22:35,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:22:35,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:22:36,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-18 07:22:36,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:22:36,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:22:36,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:22:36,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:22:36,269 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:22:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:36,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:22:36,420 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:22:36,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:22:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:36,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006846693] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:22:36,881 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:22:36,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-01-18 07:22:36,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250492502] [2022-01-18 07:22:36,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:22:36,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 07:22:36,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:22:36,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 07:22:36,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1085, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 07:22:36,882 INFO L87 Difference]: Start difference. First operand 27982 states and 110255 transitions. Second operand has 37 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:42,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:22:42,765 INFO L93 Difference]: Finished difference Result 39522 states and 149006 transitions. [2022-01-18 07:22:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 07:22:42,765 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:22:42,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:22:42,893 INFO L225 Difference]: With dead ends: 39522 [2022-01-18 07:22:42,893 INFO L226 Difference]: Without dead ends: 39176 [2022-01-18 07:22:42,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3625 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2163, Invalid=8139, Unknown=0, NotChecked=0, Total=10302 [2022-01-18 07:22:42,894 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 981 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:22:42,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 420 Invalid, 1852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1274 Invalid, 0 Unknown, 280 Unchecked, 0.8s Time] [2022-01-18 07:22:42,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39176 states. [2022-01-18 07:22:43,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39176 to 28043. [2022-01-18 07:22:43,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28043 states, 28042 states have (on average 3.940196847585764) internal successors, (110491), 28042 states have internal predecessors, (110491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:43,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28043 states to 28043 states and 110491 transitions. [2022-01-18 07:22:43,718 INFO L78 Accepts]: Start accepts. Automaton has 28043 states and 110491 transitions. Word has length 32 [2022-01-18 07:22:43,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:22:43,719 INFO L470 AbstractCegarLoop]: Abstraction has 28043 states and 110491 transitions. [2022-01-18 07:22:43,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:43,719 INFO L276 IsEmpty]: Start isEmpty. Operand 28043 states and 110491 transitions. [2022-01-18 07:22:43,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:22:43,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:22:43,774 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:22:43,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-01-18 07:22:43,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:43,974 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:22:43,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:22:43,975 INFO L85 PathProgramCache]: Analyzing trace with hash 359458385, now seen corresponding path program 93 times [2022-01-18 07:22:43,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:22:43,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324015444] [2022-01-18 07:22:43,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:22:43,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:22:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:22:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:22:44,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:22:44,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324015444] [2022-01-18 07:22:44,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324015444] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:22:44,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729838923] [2022-01-18 07:22:44,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:22:44,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:22:44,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:22:44,360 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:22:44,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-01-18 07:22:44,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:22:44,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:22:44,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 07:22:44,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:22:44,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-18 07:22:44,625 INFO L353 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2022-01-18 07:22:44,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:22:44,718 INFO L353 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-01-18 07:22:44,718 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:22:44,817 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 07:22:44,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:22:44,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:22:44,948 INFO L353 Elim1Store]: treesize reduction 15, result has 66.7 percent of original size [2022-01-18 07:22:44,948 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 46 [2022-01-18 07:22:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 07:22:45,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729838923] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:22:45,179 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:22:45,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 11] total 33 [2022-01-18 07:22:45,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464370590] [2022-01-18 07:22:45,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:22:45,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 07:22:45,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:22:45,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 07:22:45,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=913, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 07:22:45,180 INFO L87 Difference]: Start difference. First operand 28043 states and 110491 transitions. Second operand has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:22:59,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:22:59,000 INFO L93 Difference]: Finished difference Result 62877 states and 234181 transitions. [2022-01-18 07:22:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2022-01-18 07:22:59,000 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:22:59,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:22:59,207 INFO L225 Difference]: With dead ends: 62877 [2022-01-18 07:22:59,207 INFO L226 Difference]: Without dead ends: 62312 [2022-01-18 07:22:59,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20796 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=5172, Invalid=44780, Unknown=0, NotChecked=0, Total=49952 [2022-01-18 07:22:59,209 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 1607 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 1886 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 3744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 1886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1452 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:22:59,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1607 Valid, 881 Invalid, 3744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 1886 Invalid, 0 Unknown, 1452 Unchecked, 1.2s Time] [2022-01-18 07:22:59,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62312 states. [2022-01-18 07:23:00,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62312 to 29543. [2022-01-18 07:23:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29543 states, 29542 states have (on average 3.9225509444181164) internal successors, (115880), 29542 states have internal predecessors, (115880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:00,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29543 states to 29543 states and 115880 transitions. [2022-01-18 07:23:00,445 INFO L78 Accepts]: Start accepts. Automaton has 29543 states and 115880 transitions. Word has length 32 [2022-01-18 07:23:00,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:23:00,445 INFO L470 AbstractCegarLoop]: Abstraction has 29543 states and 115880 transitions. [2022-01-18 07:23:00,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:00,446 INFO L276 IsEmpty]: Start isEmpty. Operand 29543 states and 115880 transitions. [2022-01-18 07:23:00,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:23:00,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:23:00,509 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:23:00,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-01-18 07:23:00,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-01-18 07:23:00,710 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:23:00,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:23:00,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1371311347, now seen corresponding path program 94 times [2022-01-18 07:23:00,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:23:00,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330980292] [2022-01-18 07:23:00,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:23:00,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:23:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:23:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:01,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:23:01,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330980292] [2022-01-18 07:23:01,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330980292] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:23:01,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147816919] [2022-01-18 07:23:01,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:23:01,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:23:01,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:23:01,066 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:23:01,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-01-18 07:23:01,143 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:23:01,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:23:01,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:23:01,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:23:01,381 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:23:01,424 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:23:01,424 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:23:01,540 INFO L353 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-01-18 07:23:01,540 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:23:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:01,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:23:01,741 INFO L353 Elim1Store]: treesize reduction 25, result has 54.5 percent of original size [2022-01-18 07:23:01,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 46 [2022-01-18 07:23:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:02,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147816919] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:23:02,155 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:23:02,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-01-18 07:23:02,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47273523] [2022-01-18 07:23:02,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:23:02,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 07:23:02,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:23:02,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 07:23:02,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1215, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 07:23:02,156 INFO L87 Difference]: Start difference. First operand 29543 states and 115880 transitions. Second operand has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:07,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:23:07,693 INFO L93 Difference]: Finished difference Result 38388 states and 146336 transitions. [2022-01-18 07:23:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 07:23:07,693 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:23:07,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:23:07,805 INFO L225 Difference]: With dead ends: 38388 [2022-01-18 07:23:07,805 INFO L226 Difference]: Without dead ends: 38273 [2022-01-18 07:23:07,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4424 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2049, Invalid=11993, Unknown=0, NotChecked=0, Total=14042 [2022-01-18 07:23:07,806 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 653 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 2305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 584 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:23:07,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 595 Invalid, 2305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1575 Invalid, 0 Unknown, 584 Unchecked, 0.8s Time] [2022-01-18 07:23:07,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38273 states. [2022-01-18 07:23:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38273 to 29659. [2022-01-18 07:23:08,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29659 states, 29658 states have (on average 3.919751837615483) internal successors, (116252), 29658 states have internal predecessors, (116252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:08,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29659 states to 29659 states and 116252 transitions. [2022-01-18 07:23:08,570 INFO L78 Accepts]: Start accepts. Automaton has 29659 states and 116252 transitions. Word has length 32 [2022-01-18 07:23:08,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:23:08,570 INFO L470 AbstractCegarLoop]: Abstraction has 29659 states and 116252 transitions. [2022-01-18 07:23:08,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:08,570 INFO L276 IsEmpty]: Start isEmpty. Operand 29659 states and 116252 transitions. [2022-01-18 07:23:08,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:23:08,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:23:08,627 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:23:08,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-01-18 07:23:08,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-01-18 07:23:08,828 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:23:08,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:23:08,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1785520251, now seen corresponding path program 31 times [2022-01-18 07:23:08,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:23:08,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806206395] [2022-01-18 07:23:08,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:23:08,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:23:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:23:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:09,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:23:09,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806206395] [2022-01-18 07:23:09,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806206395] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:23:09,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995373543] [2022-01-18 07:23:09,264 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:23:09,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:23:09,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:23:09,265 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:23:09,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-01-18 07:23:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:23:09,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:23:09,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:23:09,747 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-18 07:23:09,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:23:09,790 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-01-18 07:23:09,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:23:09,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:23:09,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:23:09,833 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2022-01-18 07:23:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:09,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:23:09,960 INFO L353 Elim1Store]: treesize reduction 47, result has 23.0 percent of original size [2022-01-18 07:23:09,961 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 32 [2022-01-18 07:23:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:10,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995373543] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:23:10,306 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:23:10,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 39 [2022-01-18 07:23:10,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110653164] [2022-01-18 07:23:10,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:23:10,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 07:23:10,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:23:10,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 07:23:10,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1362, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 07:23:10,307 INFO L87 Difference]: Start difference. First operand 29659 states and 116252 transitions. Second operand has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:15,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:23:15,052 INFO L93 Difference]: Finished difference Result 49841 states and 188499 transitions. [2022-01-18 07:23:15,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-18 07:23:15,052 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:23:15,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:23:15,213 INFO L225 Difference]: With dead ends: 49841 [2022-01-18 07:23:15,213 INFO L226 Difference]: Without dead ends: 49694 [2022-01-18 07:23:15,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4098 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1850, Invalid=11490, Unknown=0, NotChecked=0, Total=13340 [2022-01-18 07:23:15,214 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 565 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:23:15,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 458 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1946 Invalid, 0 Unknown, 87 Unchecked, 0.9s Time] [2022-01-18 07:23:15,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49694 states. [2022-01-18 07:23:15,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49694 to 29815. [2022-01-18 07:23:15,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29815 states, 29814 states have (on average 3.91373180385054) internal successors, (116684), 29814 states have internal predecessors, (116684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:16,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29815 states to 29815 states and 116684 transitions. [2022-01-18 07:23:16,079 INFO L78 Accepts]: Start accepts. Automaton has 29815 states and 116684 transitions. Word has length 32 [2022-01-18 07:23:16,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:23:16,079 INFO L470 AbstractCegarLoop]: Abstraction has 29815 states and 116684 transitions. [2022-01-18 07:23:16,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:16,080 INFO L276 IsEmpty]: Start isEmpty. Operand 29815 states and 116684 transitions. [2022-01-18 07:23:16,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:23:16,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:23:16,139 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:23:16,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-01-18 07:23:16,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-01-18 07:23:16,340 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:23:16,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:23:16,340 INFO L85 PathProgramCache]: Analyzing trace with hash 821200773, now seen corresponding path program 32 times [2022-01-18 07:23:16,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:23:16,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098866775] [2022-01-18 07:23:16,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:23:16,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:23:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:23:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:16,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:23:16,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098866775] [2022-01-18 07:23:16,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098866775] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:23:16,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893800662] [2022-01-18 07:23:16,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:23:16,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:23:16,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:23:16,842 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:23:16,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-01-18 07:23:16,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:23:16,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:23:16,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:23:16,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:23:17,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:23:17,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:23:17,258 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-01-18 07:23:17,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:23:17,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:23:17,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:23:17,298 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2022-01-18 07:23:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:17,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:23:17,456 INFO L353 Elim1Store]: treesize reduction 47, result has 23.0 percent of original size [2022-01-18 07:23:17,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 32 [2022-01-18 07:23:17,772 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:17,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893800662] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:23:17,772 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:23:17,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 38 [2022-01-18 07:23:17,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844635392] [2022-01-18 07:23:17,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:23:17,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 07:23:17,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:23:17,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 07:23:17,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1306, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 07:23:17,773 INFO L87 Difference]: Start difference. First operand 29815 states and 116684 transitions. Second operand has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 38 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:25,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:23:25,960 INFO L93 Difference]: Finished difference Result 50727 states and 190959 transitions. [2022-01-18 07:23:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-18 07:23:25,961 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 38 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:23:25,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:23:26,126 INFO L225 Difference]: With dead ends: 50727 [2022-01-18 07:23:26,126 INFO L226 Difference]: Without dead ends: 50618 [2022-01-18 07:23:26,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8748 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=3166, Invalid=21956, Unknown=0, NotChecked=0, Total=25122 [2022-01-18 07:23:26,127 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 642 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 3253 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 3518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 3253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:23:26,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 751 Invalid, 3518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 3253 Invalid, 0 Unknown, 92 Unchecked, 1.4s Time] [2022-01-18 07:23:26,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50618 states. [2022-01-18 07:23:26,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50618 to 29913. [2022-01-18 07:23:26,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29913 states, 29912 states have (on average 3.9116073816528485) internal successors, (117004), 29912 states have internal predecessors, (117004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:27,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29913 states to 29913 states and 117004 transitions. [2022-01-18 07:23:27,031 INFO L78 Accepts]: Start accepts. Automaton has 29913 states and 117004 transitions. Word has length 32 [2022-01-18 07:23:27,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:23:27,031 INFO L470 AbstractCegarLoop]: Abstraction has 29913 states and 117004 transitions. [2022-01-18 07:23:27,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 38 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:27,032 INFO L276 IsEmpty]: Start isEmpty. Operand 29913 states and 117004 transitions. [2022-01-18 07:23:27,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:23:27,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:23:27,090 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:23:27,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-01-18 07:23:27,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:23:27,292 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:23:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:23:27,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1118337783, now seen corresponding path program 33 times [2022-01-18 07:23:27,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:23:27,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146932976] [2022-01-18 07:23:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:23:27,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:23:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:23:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:27,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:23:27,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146932976] [2022-01-18 07:23:27,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146932976] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:23:27,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539067538] [2022-01-18 07:23:27,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:23:27,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:23:27,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:23:27,641 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:23:27,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-01-18 07:23:27,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:23:27,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:23:27,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 07:23:27,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:23:27,854 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:23:27,904 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:23:27,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:23:28,076 INFO L353 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2022-01-18 07:23:28,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:23:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 07:23:28,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:23:28,407 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:23:28,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:23:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 07:23:28,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539067538] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:23:28,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:23:28,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2022-01-18 07:23:28,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25479194] [2022-01-18 07:23:28,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:23:28,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 07:23:28,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:23:28,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 07:23:28,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2022-01-18 07:23:28,669 INFO L87 Difference]: Start difference. First operand 29913 states and 117004 transitions. Second operand has 30 states, 30 states have (on average 2.5) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:32,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:23:32,156 INFO L93 Difference]: Finished difference Result 70378 states and 273867 transitions. [2022-01-18 07:23:32,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 07:23:32,156 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.5) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:23:32,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:23:32,579 INFO L225 Difference]: With dead ends: 70378 [2022-01-18 07:23:32,579 INFO L226 Difference]: Without dead ends: 70242 [2022-01-18 07:23:32,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 68 SyntacticMatches, 8 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3095 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1639, Invalid=7481, Unknown=0, NotChecked=0, Total=9120 [2022-01-18 07:23:32,580 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 485 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1431 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:23:32,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 402 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1109 Invalid, 0 Unknown, 1431 Unchecked, 0.5s Time] [2022-01-18 07:23:32,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70242 states. [2022-01-18 07:23:33,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70242 to 30700. [2022-01-18 07:23:33,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30700 states, 30699 states have (on average 3.8947848464119352) internal successors, (119566), 30699 states have internal predecessors, (119566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:33,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30700 states to 30700 states and 119566 transitions. [2022-01-18 07:23:33,720 INFO L78 Accepts]: Start accepts. Automaton has 30700 states and 119566 transitions. Word has length 32 [2022-01-18 07:23:33,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:23:33,721 INFO L470 AbstractCegarLoop]: Abstraction has 30700 states and 119566 transitions. [2022-01-18 07:23:33,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.5) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:33,721 INFO L276 IsEmpty]: Start isEmpty. Operand 30700 states and 119566 transitions. [2022-01-18 07:23:33,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:23:33,779 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:23:33,779 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:23:33,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2022-01-18 07:23:33,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:23:33,980 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:23:33,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:23:33,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2101897271, now seen corresponding path program 95 times [2022-01-18 07:23:33,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:23:33,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568462793] [2022-01-18 07:23:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:23:33,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:23:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:23:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:34,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:23:34,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568462793] [2022-01-18 07:23:34,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568462793] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:23:34,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204955169] [2022-01-18 07:23:34,364 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:23:34,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:23:34,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:23:34,365 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:23:34,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-01-18 07:23:34,426 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:23:34,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:23:34,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 07:23:34,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:23:34,605 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-18 07:23:34,664 INFO L353 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2022-01-18 07:23:34,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:23:34,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:23:34,788 INFO L353 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-01-18 07:23:34,788 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 32 [2022-01-18 07:23:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:34,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:23:35,044 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:23:35,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:23:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:35,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204955169] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:23:35,330 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:23:35,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 37 [2022-01-18 07:23:35,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515876003] [2022-01-18 07:23:35,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:23:35,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 07:23:35,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:23:35,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 07:23:35,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 07:23:35,331 INFO L87 Difference]: Start difference. First operand 30700 states and 119566 transitions. Second operand has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 37 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:46,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:23:46,671 INFO L93 Difference]: Finished difference Result 49606 states and 183648 transitions. [2022-01-18 07:23:46,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-18 07:23:46,671 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 37 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:23:46,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:23:46,812 INFO L225 Difference]: With dead ends: 49606 [2022-01-18 07:23:46,812 INFO L226 Difference]: Without dead ends: 49138 [2022-01-18 07:23:46,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13021 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=4134, Invalid=29172, Unknown=0, NotChecked=0, Total=33306 [2022-01-18 07:23:46,814 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 1154 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1009 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:23:46,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1154 Valid, 980 Invalid, 3385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 2055 Invalid, 0 Unknown, 1009 Unchecked, 1.1s Time] [2022-01-18 07:23:46,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49138 states. [2022-01-18 07:23:47,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49138 to 31406. [2022-01-18 07:23:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31406 states, 31405 states have (on average 3.8996656583346603) internal successors, (122469), 31405 states have internal predecessors, (122469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:47,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31406 states to 31406 states and 122469 transitions. [2022-01-18 07:23:47,782 INFO L78 Accepts]: Start accepts. Automaton has 31406 states and 122469 transitions. Word has length 32 [2022-01-18 07:23:47,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:23:47,782 INFO L470 AbstractCegarLoop]: Abstraction has 31406 states and 122469 transitions. [2022-01-18 07:23:47,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 37 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:47,783 INFO L276 IsEmpty]: Start isEmpty. Operand 31406 states and 122469 transitions. [2022-01-18 07:23:47,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:23:47,845 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:23:47,845 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:23:47,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-01-18 07:23:48,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-01-18 07:23:48,046 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:23:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:23:48,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1716388341, now seen corresponding path program 96 times [2022-01-18 07:23:48,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:23:48,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552477209] [2022-01-18 07:23:48,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:23:48,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:23:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:23:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:48,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:23:48,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552477209] [2022-01-18 07:23:48,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552477209] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:23:48,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182511982] [2022-01-18 07:23:48,412 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:23:48,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:23:48,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:23:48,413 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:23:48,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-01-18 07:23:48,473 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:23:48,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:23:48,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 07:23:48,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:23:48,622 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:23:48,669 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:23:48,669 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:23:48,767 INFO L353 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2022-01-18 07:23:48,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:23:48,909 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 07:23:48,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:23:49,054 INFO L353 Elim1Store]: treesize reduction 15, result has 69.4 percent of original size [2022-01-18 07:23:49,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 48 [2022-01-18 07:23:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 07:23:49,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182511982] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:23:49,512 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:23:49,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 32 [2022-01-18 07:23:49,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128955855] [2022-01-18 07:23:49,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:23:49,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 07:23:49,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:23:49,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 07:23:49,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2022-01-18 07:23:49,513 INFO L87 Difference]: Start difference. First operand 31406 states and 122469 transitions. Second operand has 32 states, 32 states have (on average 2.46875) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:51,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:23:51,836 INFO L93 Difference]: Finished difference Result 40271 states and 152289 transitions. [2022-01-18 07:23:51,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 07:23:51,837 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.46875) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:23:51,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:23:51,954 INFO L225 Difference]: With dead ends: 40271 [2022-01-18 07:23:51,954 INFO L226 Difference]: Without dead ends: 40181 [2022-01-18 07:23:51,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=864, Invalid=4836, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 07:23:51,954 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 536 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1174 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:23:51,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 446 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 653 Invalid, 0 Unknown, 1174 Unchecked, 0.3s Time] [2022-01-18 07:23:51,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40181 states. [2022-01-18 07:23:52,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40181 to 32058. [2022-01-18 07:23:52,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32058 states, 32057 states have (on average 3.8911626165892006) internal successors, (124739), 32057 states have internal predecessors, (124739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:52,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32058 states to 32058 states and 124739 transitions. [2022-01-18 07:23:52,754 INFO L78 Accepts]: Start accepts. Automaton has 32058 states and 124739 transitions. Word has length 32 [2022-01-18 07:23:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:23:52,754 INFO L470 AbstractCegarLoop]: Abstraction has 32058 states and 124739 transitions. [2022-01-18 07:23:52,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.46875) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:52,754 INFO L276 IsEmpty]: Start isEmpty. Operand 32058 states and 124739 transitions. [2022-01-18 07:23:52,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:23:52,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:23:52,946 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:23:52,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2022-01-18 07:23:53,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable130 [2022-01-18 07:23:53,146 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:23:53,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:23:53,146 INFO L85 PathProgramCache]: Analyzing trace with hash -882005515, now seen corresponding path program 97 times [2022-01-18 07:23:53,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:23:53,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465750507] [2022-01-18 07:23:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:23:53,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:23:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:23:53,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:53,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:23:53,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465750507] [2022-01-18 07:23:53,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465750507] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:23:53,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669073118] [2022-01-18 07:23:53,505 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:23:53,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:23:53,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:23:53,506 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:23:53,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-01-18 07:23:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:23:53,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:23:53,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:23:53,832 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:23:53,871 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-18 07:23:53,871 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:23:53,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:23:53,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:23:53,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:23:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:54,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:23:54,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:23:54,124 INFO L353 Elim1Store]: treesize reduction 15, result has 66.7 percent of original size [2022-01-18 07:23:54,124 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 46 [2022-01-18 07:23:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:23:54,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669073118] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:23:54,528 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:23:54,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-01-18 07:23:54,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350057669] [2022-01-18 07:23:54,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:23:54,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 07:23:54,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:23:54,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 07:23:54,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1162, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 07:23:54,529 INFO L87 Difference]: Start difference. First operand 32058 states and 124739 transitions. Second operand has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:58,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:23:58,310 INFO L93 Difference]: Finished difference Result 42967 states and 160976 transitions. [2022-01-18 07:23:58,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 07:23:58,310 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:23:58,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:23:58,434 INFO L225 Difference]: With dead ends: 42967 [2022-01-18 07:23:58,434 INFO L226 Difference]: Without dead ends: 42893 [2022-01-18 07:23:58,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2927 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1567, Invalid=7175, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 07:23:58,435 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 698 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 315 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:23:58,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 470 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1184 Invalid, 0 Unknown, 315 Unchecked, 0.6s Time] [2022-01-18 07:23:58,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42893 states. [2022-01-18 07:23:59,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42893 to 32213. [2022-01-18 07:23:59,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32213 states, 32212 states have (on average 3.886532969079846) internal successors, (125193), 32212 states have internal predecessors, (125193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:59,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32213 states to 32213 states and 125193 transitions. [2022-01-18 07:23:59,426 INFO L78 Accepts]: Start accepts. Automaton has 32213 states and 125193 transitions. Word has length 32 [2022-01-18 07:23:59,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:23:59,426 INFO L470 AbstractCegarLoop]: Abstraction has 32213 states and 125193 transitions. [2022-01-18 07:23:59,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:23:59,426 INFO L276 IsEmpty]: Start isEmpty. Operand 32213 states and 125193 transitions. [2022-01-18 07:23:59,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:23:59,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:23:59,488 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:23:59,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2022-01-18 07:23:59,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:23:59,689 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:23:59,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:23:59,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1588284495, now seen corresponding path program 98 times [2022-01-18 07:23:59,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:23:59,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097975389] [2022-01-18 07:23:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:23:59,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:23:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:24:00,050 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:24:00,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:24:00,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097975389] [2022-01-18 07:24:00,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097975389] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:24:00,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436338708] [2022-01-18 07:24:00,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:24:00,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:24:00,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:24:00,052 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:24:00,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-01-18 07:24:00,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:24:00,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:24:00,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:24:00,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:24:00,371 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:24:00,401 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-18 07:24:00,401 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:24:00,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:24:00,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:24:00,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:24:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:24:00,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:24:00,640 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:24:00,663 INFO L353 Elim1Store]: treesize reduction 15, result has 66.7 percent of original size [2022-01-18 07:24:00,663 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 46 [2022-01-18 07:24:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:24:01,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436338708] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:24:01,047 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:24:01,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-01-18 07:24:01,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877067207] [2022-01-18 07:24:01,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:24:01,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 07:24:01,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:24:01,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 07:24:01,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1162, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 07:24:01,048 INFO L87 Difference]: Start difference. First operand 32213 states and 125193 transitions. Second operand has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:24:05,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:24:05,223 INFO L93 Difference]: Finished difference Result 43018 states and 161098 transitions. [2022-01-18 07:24:05,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-18 07:24:05,224 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:24:05,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:24:05,353 INFO L225 Difference]: With dead ends: 43018 [2022-01-18 07:24:05,353 INFO L226 Difference]: Without dead ends: 42912 [2022-01-18 07:24:05,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3121 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1717, Invalid=7403, Unknown=0, NotChecked=0, Total=9120 [2022-01-18 07:24:05,354 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 715 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:24:05,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 466 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1549 Invalid, 0 Unknown, 182 Unchecked, 0.8s Time] [2022-01-18 07:24:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42912 states. [2022-01-18 07:24:06,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42912 to 32162. [2022-01-18 07:24:06,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32162 states, 32161 states have (on average 3.887565685146606) internal successors, (125028), 32161 states have internal predecessors, (125028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:24:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32162 states to 32162 states and 125028 transitions. [2022-01-18 07:24:06,265 INFO L78 Accepts]: Start accepts. Automaton has 32162 states and 125028 transitions. Word has length 32 [2022-01-18 07:24:06,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:24:06,265 INFO L470 AbstractCegarLoop]: Abstraction has 32162 states and 125028 transitions. [2022-01-18 07:24:06,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:24:06,266 INFO L276 IsEmpty]: Start isEmpty. Operand 32162 states and 125028 transitions. [2022-01-18 07:24:06,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:24:06,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:24:06,329 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:24:06,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-01-18 07:24:06,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:24:06,529 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:24:06,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:24:06,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2096591479, now seen corresponding path program 99 times [2022-01-18 07:24:06,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:24:06,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017951014] [2022-01-18 07:24:06,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:24:06,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:24:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:24:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:24:07,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:24:07,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017951014] [2022-01-18 07:24:07,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017951014] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:24:07,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346432529] [2022-01-18 07:24:07,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:24:07,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:24:07,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:24:07,085 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:24:07,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-01-18 07:24:07,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:24:07,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:24:07,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 07:24:07,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:24:07,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:24:07,382 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:24:07,382 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:24:07,481 INFO L353 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2022-01-18 07:24:07,481 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:24:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 07:24:07,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:24:07,786 INFO L353 Elim1Store]: treesize reduction 15, result has 69.4 percent of original size [2022-01-18 07:24:07,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 48 [2022-01-18 07:24:08,164 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 07:24:08,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346432529] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:24:08,165 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:24:08,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 36 [2022-01-18 07:24:08,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010512150] [2022-01-18 07:24:08,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:24:08,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 07:24:08,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:24:08,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 07:24:08,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 07:24:08,165 INFO L87 Difference]: Start difference. First operand 32162 states and 125028 transitions. Second operand has 36 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 36 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:24:12,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:24:12,297 INFO L93 Difference]: Finished difference Result 51087 states and 189656 transitions. [2022-01-18 07:24:12,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 07:24:12,297 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 36 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:24:12,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:24:12,464 INFO L225 Difference]: With dead ends: 51087 [2022-01-18 07:24:12,464 INFO L226 Difference]: Without dead ends: 51041 [2022-01-18 07:24:12,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4348 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1764, Invalid=11576, Unknown=0, NotChecked=0, Total=13340 [2022-01-18 07:24:12,466 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 684 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1797 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:24:12,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 571 Invalid, 2790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 873 Invalid, 0 Unknown, 1797 Unchecked, 0.5s Time] [2022-01-18 07:24:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51041 states. [2022-01-18 07:24:13,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51041 to 32917. [2022-01-18 07:24:13,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32917 states, 32916 states have (on average 3.8803013731923683) internal successors, (127724), 32916 states have internal predecessors, (127724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:24:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32917 states to 32917 states and 127724 transitions. [2022-01-18 07:24:13,418 INFO L78 Accepts]: Start accepts. Automaton has 32917 states and 127724 transitions. Word has length 32 [2022-01-18 07:24:13,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:24:13,418 INFO L470 AbstractCegarLoop]: Abstraction has 32917 states and 127724 transitions. [2022-01-18 07:24:13,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 36 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:24:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 32917 states and 127724 transitions. [2022-01-18 07:24:13,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:24:13,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:24:13,593 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:24:13,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-01-18 07:24:13,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-01-18 07:24:13,793 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:24:13,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:24:13,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1339985849, now seen corresponding path program 34 times [2022-01-18 07:24:13,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:24:13,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920313068] [2022-01-18 07:24:13,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:24:13,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:24:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:24:14,143 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:24:14,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:24:14,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920313068] [2022-01-18 07:24:14,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920313068] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:24:14,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250017729] [2022-01-18 07:24:14,143 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:24:14,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:24:14,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:24:14,144 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:24:14,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-01-18 07:24:14,205 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:24:14,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:24:14,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:24:14,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:24:14,479 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:24:14,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:24:14,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:24:14,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:24:14,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:24:14,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:24:14,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2022-01-18 07:24:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:24:14,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:24:14,786 INFO L353 Elim1Store]: treesize reduction 47, result has 23.0 percent of original size [2022-01-18 07:24:14,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 32 [2022-01-18 07:24:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:24:15,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250017729] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:24:15,105 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:24:15,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 38 [2022-01-18 07:24:15,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145107067] [2022-01-18 07:24:15,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:24:15,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 07:24:15,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:24:15,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 07:24:15,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1298, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 07:24:15,106 INFO L87 Difference]: Start difference. First operand 32917 states and 127724 transitions. Second operand has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 38 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:24:23,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:24:23,801 INFO L93 Difference]: Finished difference Result 55582 states and 207677 transitions. [2022-01-18 07:24:23,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-01-18 07:24:23,801 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 38 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:24:23,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:24:23,983 INFO L225 Difference]: With dead ends: 55582 [2022-01-18 07:24:23,983 INFO L226 Difference]: Without dead ends: 55484 [2022-01-18 07:24:23,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10943 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=4217, Invalid=26233, Unknown=0, NotChecked=0, Total=30450 [2022-01-18 07:24:23,985 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 782 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 2899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:24:23,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 605 Invalid, 2899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 2554 Invalid, 0 Unknown, 118 Unchecked, 1.2s Time] [2022-01-18 07:24:24,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55484 states. [2022-01-18 07:24:24,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55484 to 32935. [2022-01-18 07:24:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32935 states, 32934 states have (on average 3.8810955243820975) internal successors, (127820), 32934 states have internal predecessors, (127820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:24:24,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32935 states to 32935 states and 127820 transitions. [2022-01-18 07:24:24,991 INFO L78 Accepts]: Start accepts. Automaton has 32935 states and 127820 transitions. Word has length 32 [2022-01-18 07:24:24,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:24:24,991 INFO L470 AbstractCegarLoop]: Abstraction has 32935 states and 127820 transitions. [2022-01-18 07:24:24,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 38 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:24:24,991 INFO L276 IsEmpty]: Start isEmpty. Operand 32935 states and 127820 transitions. [2022-01-18 07:24:25,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:24:25,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:24:25,057 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:24:25,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-01-18 07:24:25,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-01-18 07:24:25,257 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:24:25,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:24:25,258 INFO L85 PathProgramCache]: Analyzing trace with hash 366106637, now seen corresponding path program 100 times [2022-01-18 07:24:25,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:24:25,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834676234] [2022-01-18 07:24:25,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:24:25,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:24:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:24:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:24:25,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:24:25,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834676234] [2022-01-18 07:24:25,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834676234] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:24:25,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745601621] [2022-01-18 07:24:25,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:24:25,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:24:25,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:24:25,623 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:24:25,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-01-18 07:24:25,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:24:25,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:24:25,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:24:25,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:24:25,910 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-18 07:24:26,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:24:26,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:24:26,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:24:26,096 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:24:26,200 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:24:26,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:24:26,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:24:26,304 INFO L353 Elim1Store]: treesize reduction 10, result has 47.4 percent of original size [2022-01-18 07:24:26,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 22 [2022-01-18 07:24:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:24:26,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745601621] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:24:26,632 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:24:26,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-01-18 07:24:26,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282410620] [2022-01-18 07:24:26,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:24:26,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 07:24:26,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:24:26,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 07:24:26,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 07:24:26,633 INFO L87 Difference]: Start difference. First operand 32935 states and 127820 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:24:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:24:33,323 INFO L93 Difference]: Finished difference Result 42801 states and 159961 transitions. [2022-01-18 07:24:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-18 07:24:33,323 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:24:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:24:33,452 INFO L225 Difference]: With dead ends: 42801 [2022-01-18 07:24:33,453 INFO L226 Difference]: Without dead ends: 42466 [2022-01-18 07:24:33,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6326 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3264, Invalid=12992, Unknown=0, NotChecked=0, Total=16256 [2022-01-18 07:24:33,454 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 1308 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 07:24:33,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 427 Invalid, 2163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 1540 Invalid, 0 Unknown, 168 Unchecked, 1.0s Time] [2022-01-18 07:24:33,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42466 states. [2022-01-18 07:24:34,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42466 to 33169. [2022-01-18 07:24:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33169 states, 33168 states have (on average 3.879492281717318) internal successors, (128675), 33168 states have internal predecessors, (128675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:24:34,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33169 states to 33169 states and 128675 transitions. [2022-01-18 07:24:34,357 INFO L78 Accepts]: Start accepts. Automaton has 33169 states and 128675 transitions. Word has length 32 [2022-01-18 07:24:34,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:24:34,357 INFO L470 AbstractCegarLoop]: Abstraction has 33169 states and 128675 transitions. [2022-01-18 07:24:34,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:24:34,357 INFO L276 IsEmpty]: Start isEmpty. Operand 33169 states and 128675 transitions. [2022-01-18 07:24:34,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:24:34,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:24:34,420 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:24:34,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-01-18 07:24:34,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-01-18 07:24:34,621 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:24:34,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:24:34,621 INFO L85 PathProgramCache]: Analyzing trace with hash -685972535, now seen corresponding path program 101 times [2022-01-18 07:24:34,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:24:34,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180777406] [2022-01-18 07:24:34,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:24:34,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:24:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:24:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:24:35,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:24:35,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180777406] [2022-01-18 07:24:35,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180777406] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:24:35,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663786356] [2022-01-18 07:24:35,010 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:24:35,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:24:35,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:24:35,010 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:24:35,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-01-18 07:24:35,075 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:24:35,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:24:35,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 07:24:35,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:24:35,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-18 07:24:35,340 INFO L353 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2022-01-18 07:24:35,340 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:24:35,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:24:35,389 INFO L353 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-01-18 07:24:35,389 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 32 [2022-01-18 07:24:35,624 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:24:35,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:24:35,810 INFO L353 Elim1Store]: treesize reduction 25, result has 54.5 percent of original size [2022-01-18 07:24:35,811 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 46 [2022-01-18 07:24:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:24:36,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663786356] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:24:36,081 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:24:36,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 38 [2022-01-18 07:24:36,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9189263] [2022-01-18 07:24:36,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:24:36,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 07:24:36,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:24:36,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 07:24:36,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1230, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 07:24:36,082 INFO L87 Difference]: Start difference. First operand 33169 states and 128675 transitions. Second operand has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:24:59,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:24:59,951 INFO L93 Difference]: Finished difference Result 91641 states and 338994 transitions. [2022-01-18 07:24:59,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 288 states. [2022-01-18 07:24:59,951 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:24:59,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:25:00,267 INFO L225 Difference]: With dead ends: 91641 [2022-01-18 07:25:00,267 INFO L226 Difference]: Without dead ends: 90983 [2022-01-18 07:25:00,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42460 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=9928, Invalid=86482, Unknown=0, NotChecked=0, Total=96410 [2022-01-18 07:25:00,271 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 1668 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 4856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2080 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:25:00,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1668 Valid, 1074 Invalid, 4856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 2430 Invalid, 0 Unknown, 2080 Unchecked, 1.7s Time] [2022-01-18 07:25:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90983 states. [2022-01-18 07:25:01,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90983 to 34783. [2022-01-18 07:25:02,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34783 states, 34782 states have (on average 3.8822379391639354) internal successors, (135032), 34782 states have internal predecessors, (135032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:25:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34783 states to 34783 states and 135032 transitions. [2022-01-18 07:25:02,129 INFO L78 Accepts]: Start accepts. Automaton has 34783 states and 135032 transitions. Word has length 32 [2022-01-18 07:25:02,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:25:02,129 INFO L470 AbstractCegarLoop]: Abstraction has 34783 states and 135032 transitions. [2022-01-18 07:25:02,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:25:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 34783 states and 135032 transitions. [2022-01-18 07:25:02,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:25:02,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:25:02,203 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:25:02,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2022-01-18 07:25:02,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-01-18 07:25:02,403 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:25:02,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:25:02,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2010400627, now seen corresponding path program 102 times [2022-01-18 07:25:02,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:25:02,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926585508] [2022-01-18 07:25:02,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:25:02,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:25:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:25:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:25:02,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:25:02,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926585508] [2022-01-18 07:25:02,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926585508] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:25:02,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066822992] [2022-01-18 07:25:02,767 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:25:02,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:25:02,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:25:02,768 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:25:02,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-01-18 07:25:02,834 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:25:02,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:25:02,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 07:25:02,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:25:02,986 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:25:03,053 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-18 07:25:03,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:25:03,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:25:03,123 INFO L353 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-01-18 07:25:03,123 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 32 [2022-01-18 07:25:03,267 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:25:03,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:25:03,442 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:25:03,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:25:03,663 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:25:03,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066822992] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:25:03,664 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:25:03,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 36 [2022-01-18 07:25:03,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828792464] [2022-01-18 07:25:03,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:25:03,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 07:25:03,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:25:03,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 07:25:03,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 07:25:03,664 INFO L87 Difference]: Start difference. First operand 34783 states and 135032 transitions. Second operand has 36 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:25:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:25:16,189 INFO L93 Difference]: Finished difference Result 64848 states and 238958 transitions. [2022-01-18 07:25:16,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-01-18 07:25:16,189 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:25:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:25:16,509 INFO L225 Difference]: With dead ends: 64848 [2022-01-18 07:25:16,509 INFO L226 Difference]: Without dead ends: 64717 [2022-01-18 07:25:16,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13417 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=3375, Invalid=31035, Unknown=0, NotChecked=0, Total=34410 [2022-01-18 07:25:16,510 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 1024 mSDsluCounter, 2280 mSDsCounter, 0 mSdLazyCounter, 3223 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 4653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 3223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1198 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:25:16,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 1363 Invalid, 4653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 3223 Invalid, 0 Unknown, 1198 Unchecked, 1.6s Time] [2022-01-18 07:25:16,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64717 states. [2022-01-18 07:25:17,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64717 to 35391. [2022-01-18 07:25:17,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35391 states, 35390 states have (on average 3.882961288499576) internal successors, (137418), 35390 states have internal predecessors, (137418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:25:17,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35391 states to 35391 states and 137418 transitions. [2022-01-18 07:25:17,743 INFO L78 Accepts]: Start accepts. Automaton has 35391 states and 137418 transitions. Word has length 32 [2022-01-18 07:25:17,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:25:17,743 INFO L470 AbstractCegarLoop]: Abstraction has 35391 states and 137418 transitions. [2022-01-18 07:25:17,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:25:17,744 INFO L276 IsEmpty]: Start isEmpty. Operand 35391 states and 137418 transitions. [2022-01-18 07:25:17,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:25:17,960 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:25:17,960 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:25:17,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-01-18 07:25:18,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:25:18,175 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:25:18,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:25:18,175 INFO L85 PathProgramCache]: Analyzing trace with hash 547803717, now seen corresponding path program 103 times [2022-01-18 07:25:18,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:25:18,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345975038] [2022-01-18 07:25:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:25:18,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:25:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:25:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:25:18,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:25:18,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345975038] [2022-01-18 07:25:18,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345975038] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:25:18,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016234170] [2022-01-18 07:25:18,577 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:25:18,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:25:18,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:25:18,578 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:25:18,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-01-18 07:25:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:25:18,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:25:18,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:25:18,840 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-18 07:25:18,919 INFO L353 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2022-01-18 07:25:18,920 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:25:19,036 INFO L353 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-01-18 07:25:19,036 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:25:19,118 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:25:19,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:25:19,241 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:25:19,242 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:25:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:25:19,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016234170] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:25:19,586 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:25:19,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-01-18 07:25:19,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101254713] [2022-01-18 07:25:19,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:25:19,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 07:25:19,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:25:19,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 07:25:19,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 07:25:19,587 INFO L87 Difference]: Start difference. First operand 35391 states and 137418 transitions. Second operand has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:25:38,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:25:38,130 INFO L93 Difference]: Finished difference Result 51787 states and 191524 transitions. [2022-01-18 07:25:38,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-01-18 07:25:38,130 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:25:38,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:25:38,300 INFO L225 Difference]: With dead ends: 51787 [2022-01-18 07:25:38,300 INFO L226 Difference]: Without dead ends: 51476 [2022-01-18 07:25:38,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21081 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=6885, Invalid=44417, Unknown=0, NotChecked=0, Total=51302 [2022-01-18 07:25:38,302 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 1314 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 579 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:25:38,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 665 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 2315 Invalid, 0 Unknown, 579 Unchecked, 1.5s Time] [2022-01-18 07:25:38,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51476 states. [2022-01-18 07:25:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51476 to 35455. [2022-01-18 07:25:39,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35455 states, 35454 states have (on average 3.8850341287301857) internal successors, (137740), 35454 states have internal predecessors, (137740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:25:39,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35455 states to 35455 states and 137740 transitions. [2022-01-18 07:25:39,401 INFO L78 Accepts]: Start accepts. Automaton has 35455 states and 137740 transitions. Word has length 32 [2022-01-18 07:25:39,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:25:39,401 INFO L470 AbstractCegarLoop]: Abstraction has 35455 states and 137740 transitions. [2022-01-18 07:25:39,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:25:39,401 INFO L276 IsEmpty]: Start isEmpty. Operand 35455 states and 137740 transitions. [2022-01-18 07:25:39,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:25:39,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:25:39,472 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:25:39,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2022-01-18 07:25:39,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-01-18 07:25:39,672 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:25:39,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:25:39,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1291597695, now seen corresponding path program 104 times [2022-01-18 07:25:39,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:25:39,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289220657] [2022-01-18 07:25:39,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:25:39,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:25:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:25:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:25:40,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:25:40,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289220657] [2022-01-18 07:25:40,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289220657] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:25:40,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798779524] [2022-01-18 07:25:40,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:25:40,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:25:40,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:25:40,069 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:25:40,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-01-18 07:25:40,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:25:40,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:25:40,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:25:40,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:25:40,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:25:40,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:25:40,439 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:25:40,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:25:40,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:25:40,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:25:40,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2022-01-18 07:25:40,631 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:25:40,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:25:40,779 INFO L353 Elim1Store]: treesize reduction 25, result has 54.5 percent of original size [2022-01-18 07:25:40,780 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 46 [2022-01-18 07:25:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:25:41,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798779524] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:25:41,185 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:25:41,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 41 [2022-01-18 07:25:41,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655461799] [2022-01-18 07:25:41,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:25:41,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 07:25:41,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:25:41,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 07:25:41,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 07:25:41,186 INFO L87 Difference]: Start difference. First operand 35455 states and 137740 transitions. Second operand has 41 states, 41 states have (on average 2.073170731707317) internal successors, (85), 41 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:26:18,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:26:18,349 INFO L93 Difference]: Finished difference Result 52844 states and 195507 transitions. [2022-01-18 07:26:18,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 382 states. [2022-01-18 07:26:18,349 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.073170731707317) internal successors, (85), 41 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:26:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:26:18,518 INFO L225 Difference]: With dead ends: 52844 [2022-01-18 07:26:18,518 INFO L226 Difference]: Without dead ends: 52586 [2022-01-18 07:26:18,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 399 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70803 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=14658, Invalid=145742, Unknown=0, NotChecked=0, Total=160400 [2022-01-18 07:26:18,523 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 1925 mSDsluCounter, 2652 mSDsCounter, 0 mSdLazyCounter, 4933 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 5579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 4933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:26:18,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1925 Valid, 1291 Invalid, 5579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 4933 Invalid, 0 Unknown, 111 Unchecked, 2.7s Time] [2022-01-18 07:26:18,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52586 states. [2022-01-18 07:26:19,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52586 to 36099. [2022-01-18 07:26:19,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36099 states, 36098 states have (on average 3.8800764585295586) internal successors, (140063), 36098 states have internal predecessors, (140063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:26:19,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36099 states to 36099 states and 140063 transitions. [2022-01-18 07:26:19,566 INFO L78 Accepts]: Start accepts. Automaton has 36099 states and 140063 transitions. Word has length 32 [2022-01-18 07:26:19,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:26:19,567 INFO L470 AbstractCegarLoop]: Abstraction has 36099 states and 140063 transitions. [2022-01-18 07:26:19,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.073170731707317) internal successors, (85), 41 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:26:19,567 INFO L276 IsEmpty]: Start isEmpty. Operand 36099 states and 140063 transitions. [2022-01-18 07:26:19,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:26:19,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:26:19,852 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:26:19,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2022-01-18 07:26:20,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-01-18 07:26:20,052 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:26:20,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:26:20,053 INFO L85 PathProgramCache]: Analyzing trace with hash -776819403, now seen corresponding path program 105 times [2022-01-18 07:26:20,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:26:20,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307810770] [2022-01-18 07:26:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:26:20,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:26:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:26:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:26:20,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:26:20,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307810770] [2022-01-18 07:26:20,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307810770] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:26:20,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247998475] [2022-01-18 07:26:20,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:26:20,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:26:20,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:26:20,406 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:26:20,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-01-18 07:26:20,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:26:20,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:26:20,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 07:26:20,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:26:20,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:26:20,659 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:26:20,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:26:20,715 INFO L353 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2022-01-18 07:26:20,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:26:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 07:26:20,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:26:21,057 INFO L353 Elim1Store]: treesize reduction 15, result has 69.4 percent of original size [2022-01-18 07:26:21,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 48 [2022-01-18 07:26:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 07:26:21,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247998475] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:26:21,373 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:26:21,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 32 [2022-01-18 07:26:21,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952226591] [2022-01-18 07:26:21,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:26:21,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 07:26:21,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:26:21,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 07:26:21,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2022-01-18 07:26:21,374 INFO L87 Difference]: Start difference. First operand 36099 states and 140063 transitions. Second operand has 32 states, 32 states have (on average 2.46875) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:26:30,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:26:30,826 INFO L93 Difference]: Finished difference Result 102620 states and 385220 transitions. [2022-01-18 07:26:30,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-01-18 07:26:30,826 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.46875) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:26:30,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:26:31,226 INFO L225 Difference]: With dead ends: 102620 [2022-01-18 07:26:31,226 INFO L226 Difference]: Without dead ends: 102242 [2022-01-18 07:26:31,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14408 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=5681, Invalid=29101, Unknown=0, NotChecked=0, Total=34782 [2022-01-18 07:26:31,228 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 1050 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1894 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:26:31,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1050 Valid, 763 Invalid, 3436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1322 Invalid, 0 Unknown, 1894 Unchecked, 0.8s Time] [2022-01-18 07:26:31,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102242 states. [2022-01-18 07:26:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102242 to 38466. [2022-01-18 07:26:33,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38466 states, 38465 states have (on average 3.907344339009489) internal successors, (150296), 38465 states have internal predecessors, (150296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:26:33,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38466 states to 38466 states and 150296 transitions. [2022-01-18 07:26:33,387 INFO L78 Accepts]: Start accepts. Automaton has 38466 states and 150296 transitions. Word has length 32 [2022-01-18 07:26:33,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:26:33,387 INFO L470 AbstractCegarLoop]: Abstraction has 38466 states and 150296 transitions. [2022-01-18 07:26:33,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.46875) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:26:33,388 INFO L276 IsEmpty]: Start isEmpty. Operand 38466 states and 150296 transitions. [2022-01-18 07:26:33,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:26:33,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:26:33,461 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:26:33,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-01-18 07:26:33,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:26:33,661 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:26:33,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:26:33,662 INFO L85 PathProgramCache]: Analyzing trace with hash 304198069, now seen corresponding path program 106 times [2022-01-18 07:26:33,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:26:33,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575990104] [2022-01-18 07:26:33,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:26:33,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:26:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:26:34,042 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:26:34,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:26:34,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575990104] [2022-01-18 07:26:34,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575990104] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:26:34,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129576333] [2022-01-18 07:26:34,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:26:34,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:26:34,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:26:34,044 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:26:34,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-01-18 07:26:34,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:26:34,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:26:34,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:26:34,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:26:34,331 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-18 07:26:34,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:26:34,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:26:34,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:26:34,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:26:34,484 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:26:34,599 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:26:34,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:26:34,695 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:26:34,696 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:26:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:26:35,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129576333] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:26:35,034 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:26:35,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-01-18 07:26:35,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821852536] [2022-01-18 07:26:35,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:26:35,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 07:26:35,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:26:35,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 07:26:35,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1070, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 07:26:35,035 INFO L87 Difference]: Start difference. First operand 38466 states and 150296 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:26:47,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:26:47,480 INFO L93 Difference]: Finished difference Result 56723 states and 209267 transitions. [2022-01-18 07:26:47,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-01-18 07:26:47,481 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:26:47,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:26:47,677 INFO L225 Difference]: With dead ends: 56723 [2022-01-18 07:26:47,677 INFO L226 Difference]: Without dead ends: 56244 [2022-01-18 07:26:47,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11188 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=5132, Invalid=22590, Unknown=0, NotChecked=0, Total=27722 [2022-01-18 07:26:47,678 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1240 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 2802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 417 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:26:47,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1240 Valid, 572 Invalid, 2802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 2022 Invalid, 0 Unknown, 417 Unchecked, 1.3s Time] [2022-01-18 07:26:47,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56244 states. [2022-01-18 07:26:48,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56244 to 38432. [2022-01-18 07:26:48,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38432 states, 38431 states have (on average 3.9106190315110196) internal successors, (150289), 38431 states have internal predecessors, (150289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:26:49,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38432 states to 38432 states and 150289 transitions. [2022-01-18 07:26:49,168 INFO L78 Accepts]: Start accepts. Automaton has 38432 states and 150289 transitions. Word has length 32 [2022-01-18 07:26:49,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:26:49,168 INFO L470 AbstractCegarLoop]: Abstraction has 38432 states and 150289 transitions. [2022-01-18 07:26:49,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:26:49,169 INFO L276 IsEmpty]: Start isEmpty. Operand 38432 states and 150289 transitions. [2022-01-18 07:26:49,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:26:49,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:26:49,260 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:26:49,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-01-18 07:26:49,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:26:49,461 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:26:49,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:26:49,461 INFO L85 PathProgramCache]: Analyzing trace with hash -432199035, now seen corresponding path program 107 times [2022-01-18 07:26:49,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:26:49,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685069253] [2022-01-18 07:26:49,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:26:49,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:26:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:26:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:26:49,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:26:49,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685069253] [2022-01-18 07:26:49,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685069253] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:26:49,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392302537] [2022-01-18 07:26:49,774 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:26:49,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:26:49,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:26:49,775 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:26:49,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-01-18 07:26:49,846 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:26:49,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:26:49,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:26:49,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:26:50,037 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:26:50,097 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:26:50,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:26:50,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:26:50,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:26:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:26:50,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:26:50,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:26:50,486 INFO L353 Elim1Store]: treesize reduction 15, result has 66.7 percent of original size [2022-01-18 07:26:50,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 46 [2022-01-18 07:26:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:26:50,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392302537] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:26:50,850 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:26:50,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2022-01-18 07:26:50,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786358309] [2022-01-18 07:26:50,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:26:50,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 07:26:50,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:26:50,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 07:26:50,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1327, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 07:26:50,851 INFO L87 Difference]: Start difference. First operand 38432 states and 150289 transitions. Second operand has 40 states, 40 states have (on average 2.125) internal successors, (85), 40 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:27:00,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:27:00,803 INFO L93 Difference]: Finished difference Result 52386 states and 197704 transitions. [2022-01-18 07:27:00,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-01-18 07:27:00,804 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.125) internal successors, (85), 40 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:27:00,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:27:00,992 INFO L225 Difference]: With dead ends: 52386 [2022-01-18 07:27:00,993 INFO L226 Difference]: Without dead ends: 51723 [2022-01-18 07:27:00,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12292 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=5432, Invalid=26074, Unknown=0, NotChecked=0, Total=31506 [2022-01-18 07:27:00,994 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 1346 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 3510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:27:00,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 679 Invalid, 3510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2912 Invalid, 0 Unknown, 113 Unchecked, 1.5s Time] [2022-01-18 07:27:01,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51723 states. [2022-01-18 07:27:02,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51723 to 38501. [2022-01-18 07:27:02,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38501 states, 38500 states have (on average 3.9126233766233764) internal successors, (150636), 38500 states have internal predecessors, (150636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:27:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38501 states to 38501 states and 150636 transitions. [2022-01-18 07:27:02,222 INFO L78 Accepts]: Start accepts. Automaton has 38501 states and 150636 transitions. Word has length 32 [2022-01-18 07:27:02,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:27:02,222 INFO L470 AbstractCegarLoop]: Abstraction has 38501 states and 150636 transitions. [2022-01-18 07:27:02,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.125) internal successors, (85), 40 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:27:02,222 INFO L276 IsEmpty]: Start isEmpty. Operand 38501 states and 150636 transitions. [2022-01-18 07:27:02,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:27:02,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:27:02,301 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:27:02,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2022-01-18 07:27:02,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:27:02,501 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:27:02,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:27:02,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1691205311, now seen corresponding path program 108 times [2022-01-18 07:27:02,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:27:02,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805843285] [2022-01-18 07:27:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:27:02,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:27:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:27:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:27:02,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:27:02,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805843285] [2022-01-18 07:27:02,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805843285] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:27:02,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310563820] [2022-01-18 07:27:02,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:27:02,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:27:02,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:27:02,805 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:27:02,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-01-18 07:27:02,872 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:27:02,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:27:02,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 07:27:02,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:27:02,989 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:27:03,028 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:27:03,028 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:27:03,091 INFO L353 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2022-01-18 07:27:03,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:27:03,348 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 07:27:03,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:27:03,495 INFO L353 Elim1Store]: treesize reduction 15, result has 69.4 percent of original size [2022-01-18 07:27:03,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 48 [2022-01-18 07:27:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 07:27:03,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310563820] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:27:03,927 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:27:03,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 32 [2022-01-18 07:27:03,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163420891] [2022-01-18 07:27:03,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:27:03,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 07:27:03,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:27:03,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 07:27:03,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2022-01-18 07:27:03,927 INFO L87 Difference]: Start difference. First operand 38501 states and 150636 transitions. Second operand has 32 states, 32 states have (on average 2.4375) internal successors, (78), 32 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 07:27:16,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:27:16,838 INFO L93 Difference]: Finished difference Result 137132 states and 508942 transitions. [2022-01-18 07:27:16,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-01-18 07:27:16,838 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 32 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 32 [2022-01-18 07:27:16,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:27:17,369 INFO L225 Difference]: With dead ends: 137132 [2022-01-18 07:27:17,369 INFO L226 Difference]: Without dead ends: 136805 [2022-01-18 07:27:17,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 79 SyntacticMatches, 39 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27049 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=8097, Invalid=50225, Unknown=0, NotChecked=0, Total=58322 [2022-01-18 07:27:17,371 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 971 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 3696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1541 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:27:17,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 953 Invalid, 3696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1920 Invalid, 0 Unknown, 1541 Unchecked, 1.1s Time] [2022-01-18 07:27:17,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136805 states. [2022-01-18 07:27:19,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136805 to 39413. [2022-01-18 07:27:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39413 states, 39412 states have (on average 3.917613924692987) internal successors, (154401), 39412 states have internal predecessors, (154401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:27:19,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39413 states to 39413 states and 154401 transitions. [2022-01-18 07:27:19,776 INFO L78 Accepts]: Start accepts. Automaton has 39413 states and 154401 transitions. Word has length 32 [2022-01-18 07:27:19,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:27:19,776 INFO L470 AbstractCegarLoop]: Abstraction has 39413 states and 154401 transitions. [2022-01-18 07:27:19,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 32 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 07:27:19,776 INFO L276 IsEmpty]: Start isEmpty. Operand 39413 states and 154401 transitions. [2022-01-18 07:27:19,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:27:19,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:27:19,848 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:27:19,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2022-01-18 07:27:20,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2022-01-18 07:27:20,048 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:27:20,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:27:20,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2091579829, now seen corresponding path program 109 times [2022-01-18 07:27:20,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:27:20,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223769250] [2022-01-18 07:27:20,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:27:20,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:27:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:27:20,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:27:20,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:27:20,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223769250] [2022-01-18 07:27:20,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223769250] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:27:20,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785136668] [2022-01-18 07:27:20,576 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:27:20,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:27:20,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:27:20,577 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:27:20,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-01-18 07:27:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:27:20,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:27:20,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:27:20,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-18 07:27:20,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:27:20,942 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:27:21,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:27:21,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:27:21,034 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:27:21,137 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:27:21,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:27:21,233 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:27:21,233 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:27:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:27:21,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785136668] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:27:21,568 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:27:21,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 36 [2022-01-18 07:27:21,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247949142] [2022-01-18 07:27:21,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:27:21,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 07:27:21,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:27:21,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 07:27:21,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 07:27:21,569 INFO L87 Difference]: Start difference. First operand 39413 states and 154401 transitions. Second operand has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 36 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:27:34,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:27:34,171 INFO L93 Difference]: Finished difference Result 57731 states and 213688 transitions. [2022-01-18 07:27:34,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-01-18 07:27:34,171 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 36 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:27:34,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:27:34,359 INFO L225 Difference]: With dead ends: 57731 [2022-01-18 07:27:34,359 INFO L226 Difference]: Without dead ends: 57320 [2022-01-18 07:27:34,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11860 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=5415, Invalid=23315, Unknown=0, NotChecked=0, Total=28730 [2022-01-18 07:27:34,360 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1111 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 3580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1383 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:27:34,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1111 Valid, 636 Invalid, 3580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 1910 Invalid, 0 Unknown, 1383 Unchecked, 1.3s Time] [2022-01-18 07:27:34,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57320 states. [2022-01-18 07:27:35,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57320 to 39513. [2022-01-18 07:27:35,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39513 states, 39512 states have (on average 3.9168100830127557) internal successors, (154761), 39512 states have internal predecessors, (154761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:27:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39513 states to 39513 states and 154761 transitions. [2022-01-18 07:27:35,556 INFO L78 Accepts]: Start accepts. Automaton has 39513 states and 154761 transitions. Word has length 32 [2022-01-18 07:27:35,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:27:35,556 INFO L470 AbstractCegarLoop]: Abstraction has 39513 states and 154761 transitions. [2022-01-18 07:27:35,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 36 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:27:35,556 INFO L276 IsEmpty]: Start isEmpty. Operand 39513 states and 154761 transitions. [2022-01-18 07:27:35,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:27:35,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:27:35,816 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:27:35,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2022-01-18 07:27:36,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-01-18 07:27:36,017 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:27:36,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:27:36,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1876184123, now seen corresponding path program 110 times [2022-01-18 07:27:36,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:27:36,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485067793] [2022-01-18 07:27:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:27:36,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:27:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:27:36,305 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:27:36,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:27:36,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485067793] [2022-01-18 07:27:36,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485067793] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:27:36,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241525063] [2022-01-18 07:27:36,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:27:36,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:27:36,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:27:36,306 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:27:36,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-01-18 07:27:36,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:27:36,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:27:36,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:27:36,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:27:36,587 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-18 07:27:36,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:27:36,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:27:36,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:27:36,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:27:36,700 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:27:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:27:36,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:27:36,969 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-01-18 07:27:36,969 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 26 [2022-01-18 07:27:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:27:37,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241525063] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:27:37,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:27:37,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 36 [2022-01-18 07:27:37,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971463134] [2022-01-18 07:27:37,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:27:37,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 07:27:37,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:27:37,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 07:27:37,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1009, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 07:27:37,300 INFO L87 Difference]: Start difference. First operand 39513 states and 154761 transitions. Second operand has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 36 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:27:44,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:27:44,561 INFO L93 Difference]: Finished difference Result 55354 states and 208250 transitions. [2022-01-18 07:27:44,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-18 07:27:44,561 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 36 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:27:44,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:27:44,744 INFO L225 Difference]: With dead ends: 55354 [2022-01-18 07:27:44,745 INFO L226 Difference]: Without dead ends: 55210 [2022-01-18 07:27:44,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 42 SyntacticMatches, 6 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7906 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=3892, Invalid=15290, Unknown=0, NotChecked=0, Total=19182 [2022-01-18 07:27:44,745 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 965 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 3975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2044 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:27:44,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 627 Invalid, 3975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1581 Invalid, 0 Unknown, 2044 Unchecked, 0.9s Time] [2022-01-18 07:27:44,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55210 states. [2022-01-18 07:27:45,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55210 to 39510. [2022-01-18 07:27:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39510 states, 39509 states have (on average 3.917892125844744) internal successors, (154792), 39509 states have internal predecessors, (154792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:27:46,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39510 states to 39510 states and 154792 transitions. [2022-01-18 07:27:46,029 INFO L78 Accepts]: Start accepts. Automaton has 39510 states and 154792 transitions. Word has length 32 [2022-01-18 07:27:46,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:27:46,029 INFO L470 AbstractCegarLoop]: Abstraction has 39510 states and 154792 transitions. [2022-01-18 07:27:46,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 36 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:27:46,029 INFO L276 IsEmpty]: Start isEmpty. Operand 39510 states and 154792 transitions. [2022-01-18 07:27:46,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:27:46,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:27:46,107 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:27:46,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-01-18 07:27:46,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2022-01-18 07:27:46,307 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:27:46,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:27:46,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1870318149, now seen corresponding path program 111 times [2022-01-18 07:27:46,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:27:46,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747785812] [2022-01-18 07:27:46,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:27:46,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:27:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:27:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:27:46,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:27:46,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747785812] [2022-01-18 07:27:46,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747785812] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:27:46,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823662083] [2022-01-18 07:27:46,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:27:46,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:27:46,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:27:46,681 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:27:46,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-01-18 07:27:46,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:27:46,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:27:46,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 07:27:46,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:27:46,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-18 07:27:46,908 INFO L353 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2022-01-18 07:27:46,908 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:27:47,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:27:47,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:27:47,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:27:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 07:27:47,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:27:47,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:27:47,285 INFO L353 Elim1Store]: treesize reduction 15, result has 66.7 percent of original size [2022-01-18 07:27:47,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 46 [2022-01-18 07:27:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 07:27:47,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823662083] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:27:47,516 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:27:47,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 34 [2022-01-18 07:27:47,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653556139] [2022-01-18 07:27:47,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:27:47,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 07:27:47,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:27:47,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 07:27:47,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=952, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 07:27:47,517 INFO L87 Difference]: Start difference. First operand 39510 states and 154792 transitions. Second operand has 34 states, 34 states have (on average 2.323529411764706) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:28:08,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:28:08,019 INFO L93 Difference]: Finished difference Result 64931 states and 242817 transitions. [2022-01-18 07:28:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2022-01-18 07:28:08,019 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.323529411764706) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:28:08,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:28:08,232 INFO L225 Difference]: With dead ends: 64931 [2022-01-18 07:28:08,232 INFO L226 Difference]: Without dead ends: 64244 [2022-01-18 07:28:08,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34251 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=9447, Invalid=68115, Unknown=0, NotChecked=0, Total=77562 [2022-01-18 07:28:08,236 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 1991 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 2475 mSolverCounterSat, 785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 3482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 2475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:28:08,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1991 Valid, 612 Invalid, 3482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 2475 Invalid, 0 Unknown, 222 Unchecked, 1.7s Time] [2022-01-18 07:28:08,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64244 states. [2022-01-18 07:28:09,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64244 to 42777. [2022-01-18 07:28:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42777 states, 42776 states have (on average 3.9228305591920702) internal successors, (167803), 42776 states have internal predecessors, (167803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:28:09,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42777 states to 42777 states and 167803 transitions. [2022-01-18 07:28:09,666 INFO L78 Accepts]: Start accepts. Automaton has 42777 states and 167803 transitions. Word has length 32 [2022-01-18 07:28:09,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:28:09,667 INFO L470 AbstractCegarLoop]: Abstraction has 42777 states and 167803 transitions. [2022-01-18 07:28:09,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.323529411764706) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:28:09,667 INFO L276 IsEmpty]: Start isEmpty. Operand 42777 states and 167803 transitions. [2022-01-18 07:28:09,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:28:09,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:28:09,752 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:28:09,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-01-18 07:28:09,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:28:09,953 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:28:09,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:28:09,953 INFO L85 PathProgramCache]: Analyzing trace with hash 608356609, now seen corresponding path program 112 times [2022-01-18 07:28:09,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:28:09,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814048435] [2022-01-18 07:28:09,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:28:09,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:28:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:28:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:28:10,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:28:10,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814048435] [2022-01-18 07:28:10,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814048435] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:28:10,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696925195] [2022-01-18 07:28:10,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:28:10,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:28:10,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:28:10,237 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:28:10,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-01-18 07:28:10,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:28:10,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:28:10,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:28:10,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:28:10,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:28:10,532 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:28:10,532 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:28:10,587 INFO L353 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-01-18 07:28:10,587 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:28:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:28:10,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:28:10,894 INFO L353 Elim1Store]: treesize reduction 25, result has 54.5 percent of original size [2022-01-18 07:28:10,894 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 46 [2022-01-18 07:28:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:28:11,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696925195] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:28:11,238 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:28:11,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-01-18 07:28:11,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443811530] [2022-01-18 07:28:11,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:28:11,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 07:28:11,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:28:11,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 07:28:11,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1129, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 07:28:11,239 INFO L87 Difference]: Start difference. First operand 42777 states and 167803 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:28:18,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:28:18,632 INFO L93 Difference]: Finished difference Result 74886 states and 285697 transitions. [2022-01-18 07:28:18,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-01-18 07:28:18,632 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:28:18,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:28:19,011 INFO L225 Difference]: With dead ends: 74886 [2022-01-18 07:28:19,011 INFO L226 Difference]: Without dead ends: 74740 [2022-01-18 07:28:19,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9652 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=4568, Invalid=19612, Unknown=0, NotChecked=0, Total=24180 [2022-01-18 07:28:19,012 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 1141 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1592 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:28:19,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1141 Valid, 653 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1247 Invalid, 0 Unknown, 1592 Unchecked, 0.7s Time] [2022-01-18 07:28:19,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74740 states. [2022-01-18 07:28:20,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74740 to 42745. [2022-01-18 07:28:20,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42745 states, 42744 states have (on average 3.922842972113045) internal successors, (167678), 42744 states have internal predecessors, (167678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:28:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42745 states to 42745 states and 167678 transitions. [2022-01-18 07:28:20,538 INFO L78 Accepts]: Start accepts. Automaton has 42745 states and 167678 transitions. Word has length 32 [2022-01-18 07:28:20,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:28:20,538 INFO L470 AbstractCegarLoop]: Abstraction has 42745 states and 167678 transitions. [2022-01-18 07:28:20,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:28:20,538 INFO L276 IsEmpty]: Start isEmpty. Operand 42745 states and 167678 transitions. [2022-01-18 07:28:20,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:28:20,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:28:20,625 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:28:20,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2022-01-18 07:28:20,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-01-18 07:28:20,825 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:28:20,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:28:20,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1916574215, now seen corresponding path program 113 times [2022-01-18 07:28:20,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:28:20,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247968382] [2022-01-18 07:28:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:28:20,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:28:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:28:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:28:21,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:28:21,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247968382] [2022-01-18 07:28:21,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247968382] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:28:21,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197897803] [2022-01-18 07:28:21,196 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:28:21,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:28:21,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:28:21,196 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:28:21,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-01-18 07:28:21,267 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:28:21,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:28:21,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:28:21,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:28:21,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:28:21,590 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-18 07:28:21,590 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:28:21,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:28:21,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:28:21,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:28:21,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:28:21,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:28:21,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:28:21,891 INFO L353 Elim1Store]: treesize reduction 15, result has 66.7 percent of original size [2022-01-18 07:28:21,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 46 [2022-01-18 07:28:22,416 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:28:22,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197897803] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:28:22,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:28:22,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2022-01-18 07:28:22,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083899596] [2022-01-18 07:28:22,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:28:22,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 07:28:22,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:28:22,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 07:28:22,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1311, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 07:28:22,417 INFO L87 Difference]: Start difference. First operand 42745 states and 167678 transitions. Second operand has 40 states, 40 states have (on average 2.1) internal successors, (84), 40 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:28:38,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:28:38,440 INFO L93 Difference]: Finished difference Result 81857 states and 307215 transitions. [2022-01-18 07:28:38,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2022-01-18 07:28:38,440 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.1) internal successors, (84), 40 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:28:38,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:28:38,851 INFO L225 Difference]: With dead ends: 81857 [2022-01-18 07:28:38,851 INFO L226 Difference]: Without dead ends: 81799 [2022-01-18 07:28:38,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 49 SyntacticMatches, 18 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35516 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=13394, Invalid=62506, Unknown=0, NotChecked=0, Total=75900 [2022-01-18 07:28:38,853 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 1277 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 4558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2341 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:28:38,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1277 Valid, 722 Invalid, 4558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 1781 Invalid, 0 Unknown, 2341 Unchecked, 1.1s Time] [2022-01-18 07:28:38,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81799 states. [2022-01-18 07:28:40,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81799 to 45299. [2022-01-18 07:28:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45299 states, 45298 states have (on average 3.9278555344606825) internal successors, (177924), 45298 states have internal predecessors, (177924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:28:40,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45299 states to 45299 states and 177924 transitions. [2022-01-18 07:28:40,554 INFO L78 Accepts]: Start accepts. Automaton has 45299 states and 177924 transitions. Word has length 32 [2022-01-18 07:28:40,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:28:40,554 INFO L470 AbstractCegarLoop]: Abstraction has 45299 states and 177924 transitions. [2022-01-18 07:28:40,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.1) internal successors, (84), 40 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:28:40,554 INFO L276 IsEmpty]: Start isEmpty. Operand 45299 states and 177924 transitions. [2022-01-18 07:28:40,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:28:40,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:28:40,657 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:28:40,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2022-01-18 07:28:40,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2022-01-18 07:28:40,871 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:28:40,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:28:40,872 INFO L85 PathProgramCache]: Analyzing trace with hash 381488527, now seen corresponding path program 114 times [2022-01-18 07:28:40,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:28:40,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895960065] [2022-01-18 07:28:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:28:40,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:28:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:28:41,419 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:28:41,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:28:41,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895960065] [2022-01-18 07:28:41,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895960065] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:28:41,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417356749] [2022-01-18 07:28:41,420 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:28:41,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:28:41,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:28:41,420 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:28:41,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-01-18 07:28:41,492 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:28:41,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:28:41,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 07:28:41,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:28:41,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:28:41,685 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:28:41,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:28:41,795 INFO L353 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2022-01-18 07:28:41,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:28:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 07:28:42,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:28:42,171 INFO L353 Elim1Store]: treesize reduction 15, result has 69.4 percent of original size [2022-01-18 07:28:42,171 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 48 [2022-01-18 07:28:42,464 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 07:28:42,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417356749] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:28:42,464 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:28:42,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 31 [2022-01-18 07:28:42,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654774222] [2022-01-18 07:28:42,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:28:42,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 07:28:42,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:28:42,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 07:28:42,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2022-01-18 07:28:42,465 INFO L87 Difference]: Start difference. First operand 45299 states and 177924 transitions. Second operand has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 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 07:28:44,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:28:44,357 INFO L93 Difference]: Finished difference Result 55889 states and 214095 transitions. [2022-01-18 07:28:44,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 07:28:44,357 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 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 32 [2022-01-18 07:28:44,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:28:44,543 INFO L225 Difference]: With dead ends: 55889 [2022-01-18 07:28:44,543 INFO L226 Difference]: Without dead ends: 55805 [2022-01-18 07:28:44,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 07:28:44,543 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 369 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 934 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:28:44,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 474 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 516 Invalid, 0 Unknown, 934 Unchecked, 0.3s Time] [2022-01-18 07:28:44,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55805 states. [2022-01-18 07:28:45,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55805 to 45472. [2022-01-18 07:28:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45472 states, 45471 states have (on average 3.926128741395615) internal successors, (178525), 45471 states have internal predecessors, (178525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:28:45,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45472 states to 45472 states and 178525 transitions. [2022-01-18 07:28:45,845 INFO L78 Accepts]: Start accepts. Automaton has 45472 states and 178525 transitions. Word has length 32 [2022-01-18 07:28:45,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:28:45,845 INFO L470 AbstractCegarLoop]: Abstraction has 45472 states and 178525 transitions. [2022-01-18 07:28:45,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 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 07:28:45,845 INFO L276 IsEmpty]: Start isEmpty. Operand 45472 states and 178525 transitions. [2022-01-18 07:28:45,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:28:45,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:28:45,938 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:28:45,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2022-01-18 07:28:46,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:28:46,139 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:28:46,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:28:46,139 INFO L85 PathProgramCache]: Analyzing trace with hash -283875383, now seen corresponding path program 115 times [2022-01-18 07:28:46,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:28:46,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313801221] [2022-01-18 07:28:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:28:46,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:28:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:28:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:28:46,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:28:46,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313801221] [2022-01-18 07:28:46,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313801221] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:28:46,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593980296] [2022-01-18 07:28:46,503 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:28:46,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:28:46,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:28:46,504 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:28:46,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-01-18 07:28:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:28:46,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:28:46,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:28:46,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:28:46,894 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:28:46,894 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:28:46,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:28:46,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:28:46,956 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:28:47,210 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:28:47,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:28:47,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:28:47,323 INFO L353 Elim1Store]: treesize reduction 15, result has 66.7 percent of original size [2022-01-18 07:28:47,324 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 46 [2022-01-18 07:28:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:28:47,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593980296] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:28:47,686 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:28:47,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-01-18 07:28:47,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609239539] [2022-01-18 07:28:47,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:28:47,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 07:28:47,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:28:47,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 07:28:47,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1144, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 07:28:47,686 INFO L87 Difference]: Start difference. First operand 45472 states and 178525 transitions. Second operand has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 38 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:28:53,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:28:53,292 INFO L93 Difference]: Finished difference Result 62264 states and 233957 transitions. [2022-01-18 07:28:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 07:28:53,292 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 38 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:28:53,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:28:53,492 INFO L225 Difference]: With dead ends: 62264 [2022-01-18 07:28:53,492 INFO L226 Difference]: Without dead ends: 60318 [2022-01-18 07:28:53,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5306 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2576, Invalid=11944, Unknown=0, NotChecked=0, Total=14520 [2022-01-18 07:28:53,493 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 1004 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:28:53,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1004 Valid, 558 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 1647 Invalid, 0 Unknown, 290 Unchecked, 0.9s Time] [2022-01-18 07:28:53,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60318 states. [2022-01-18 07:28:54,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60318 to 44889. [2022-01-18 07:28:54,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44889 states, 44888 states have (on average 3.936241311709143) internal successors, (176690), 44888 states have internal predecessors, (176690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:28:54,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44889 states to 44889 states and 176690 transitions. [2022-01-18 07:28:54,967 INFO L78 Accepts]: Start accepts. Automaton has 44889 states and 176690 transitions. Word has length 32 [2022-01-18 07:28:54,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:28:54,967 INFO L470 AbstractCegarLoop]: Abstraction has 44889 states and 176690 transitions. [2022-01-18 07:28:54,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 38 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:28:54,968 INFO L276 IsEmpty]: Start isEmpty. Operand 44889 states and 176690 transitions. [2022-01-18 07:28:55,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:28:55,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:28:55,062 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:28:55,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2022-01-18 07:28:55,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2022-01-18 07:28:55,262 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:28:55,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:28:55,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1587414643, now seen corresponding path program 116 times [2022-01-18 07:28:55,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:28:55,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25636311] [2022-01-18 07:28:55,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:28:55,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:28:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:28:55,618 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:28:55,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:28:55,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25636311] [2022-01-18 07:28:55,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25636311] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:28:55,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488127395] [2022-01-18 07:28:55,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:28:55,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:28:55,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:28:55,619 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:28:55,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-01-18 07:28:55,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:28:55,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:28:55,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:28:55,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:28:55,920 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:28:56,087 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-01-18 07:28:56,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 07:28:56,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:28:56,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:28:56,198 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-01-18 07:28:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:28:56,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:28:56,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:28:56,412 INFO L353 Elim1Store]: treesize reduction 15, result has 66.7 percent of original size [2022-01-18 07:28:56,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 46 [2022-01-18 07:28:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:28:56,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488127395] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:28:56,771 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:28:56,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-01-18 07:28:56,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467038715] [2022-01-18 07:28:56,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:28:56,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 07:28:56,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:28:56,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 07:28:56,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1129, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 07:28:56,771 INFO L87 Difference]: Start difference. First operand 44889 states and 176690 transitions. Second operand has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:01,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:01,556 INFO L93 Difference]: Finished difference Result 61347 states and 231426 transitions. [2022-01-18 07:29:01,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 07:29:01,556 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 07:29:01,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:01,757 INFO L225 Difference]: With dead ends: 61347 [2022-01-18 07:29:01,757 INFO L226 Difference]: Without dead ends: 61101 [2022-01-18 07:29:01,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4829 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2241, Invalid=10641, Unknown=0, NotChecked=0, Total=12882 [2022-01-18 07:29:01,758 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 930 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:01,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [930 Valid, 596 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 2303 Invalid, 0 Unknown, 170 Unchecked, 1.2s Time] [2022-01-18 07:29:01,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61101 states. [2022-01-18 07:29:03,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61101 to 45263. [2022-01-18 07:29:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45263 states, 45262 states have (on average 3.9337855154434185) internal successors, (178051), 45262 states have internal predecessors, (178051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45263 states to 45263 states and 178051 transitions. [2022-01-18 07:29:03,240 INFO L78 Accepts]: Start accepts. Automaton has 45263 states and 178051 transitions. Word has length 32 [2022-01-18 07:29:03,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:03,240 INFO L470 AbstractCegarLoop]: Abstraction has 45263 states and 178051 transitions. [2022-01-18 07:29:03,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:03,240 INFO L276 IsEmpty]: Start isEmpty. Operand 45263 states and 178051 transitions. [2022-01-18 07:29:03,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 07:29:03,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:03,540 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:03,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:03,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:03,758 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:03,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:03,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1682856645, now seen corresponding path program 117 times [2022-01-18 07:29:03,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:03,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324669651] [2022-01-18 07:29:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:03,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:04,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:04,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324669651] [2022-01-18 07:29:04,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324669651] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:04,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410038208] [2022-01-18 07:29:04,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:29:04,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:04,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:04,124 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:04,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-01-18 07:29:04,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 07:29:04,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:04,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 07:29:04,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:04,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-18 07:29:04,364 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-18 07:29:04,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-01-18 07:29:04,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:29:04,446 INFO L353 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-01-18 07:29:04,446 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 32 [2022-01-18 07:29:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 07:29:04,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:04,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:29:04,848 INFO L353 Elim1Store]: treesize reduction 15, result has 66.7 percent of original size [2022-01-18 07:29:04,848 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 46 [2022-01-18 07:29:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 07:29:05,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410038208] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:05,048 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:05,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 31 [2022-01-18 07:29:05,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689905360] [2022-01-18 07:29:05,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:05,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 07:29:05,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:05,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 07:29:05,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2022-01-18 07:29:05,048 INFO L87 Difference]: Start difference. First operand 45263 states and 178051 transitions. Second operand has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 31 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 07:29:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:09,667 INFO L93 Difference]: Finished difference Result 84532 states and 328094 transitions. [2022-01-18 07:29:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-18 07:29:09,667 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 31 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 32 [2022-01-18 07:29:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:10,116 INFO L225 Difference]: With dead ends: 84532 [2022-01-18 07:29:10,116 INFO L226 Difference]: Without dead ends: 84383 [2022-01-18 07:29:10,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4305 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1724, Invalid=10708, Unknown=0, NotChecked=0, Total=12432 [2022-01-18 07:29:10,117 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 560 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 4480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2736 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:10,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 631 Invalid, 4480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1595 Invalid, 0 Unknown, 2736 Unchecked, 0.8s Time] [2022-01-18 07:29:10,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84383 states. Received shutdown request... [2022-01-18 07:29:10,312 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-01-18 07:29:10,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2022-01-18 07:29:10,358 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 07:29:10,358 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 07:29:10,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:10,513 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2022-01-18 07:29:10,514 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 07:29:10,514 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 07:29:10,514 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 07:29:10,516 INFO L732 BasicCegarLoop]: Path program histogram: [117, 34, 1, 1] [2022-01-18 07:29:10,518 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 07:29:10,518 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 07:29:10,519 INFO L202 PluginConnector]: Adding new model parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 07:29:10 BasicIcfg [2022-01-18 07:29:10,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 07:29:10,520 INFO L158 Benchmark]: Toolchain (without parser) took 753106.24ms. Allocated memory was 346.0MB in the beginning and 7.6GB in the end (delta: 7.3GB). Free memory was 307.0MB in the beginning and 5.0GB in the end (delta: -4.7GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. [2022-01-18 07:29:10,520 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 346.0MB. Free memory is still 308.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 07:29:10,520 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.43ms. Allocated memory is still 346.0MB. Free memory was 306.9MB in the beginning and 305.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 07:29:10,520 INFO L158 Benchmark]: Boogie Preprocessor took 10.39ms. Allocated memory is still 346.0MB. Free memory was 305.4MB in the beginning and 304.4MB in the end (delta: 990.0kB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2022-01-18 07:29:10,520 INFO L158 Benchmark]: RCFGBuilder took 149.74ms. Allocated memory is still 346.0MB. Free memory was 304.4MB in the beginning and 295.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2022-01-18 07:29:10,520 INFO L158 Benchmark]: TraceAbstraction took 752924.68ms. Allocated memory was 346.0MB in the beginning and 7.6GB in the end (delta: 7.3GB). Free memory was 294.7MB in the beginning and 5.0GB in the end (delta: -4.7GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. [2022-01-18 07:29:10,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11ms. Allocated memory is still 346.0MB. Free memory is still 308.1MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 18.43ms. Allocated memory is still 346.0MB. Free memory was 306.9MB in the beginning and 305.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 10.39ms. Allocated memory is still 346.0MB. Free memory was 305.4MB in the beginning and 304.4MB in the end (delta: 990.0kB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 149.74ms. Allocated memory is still 346.0MB. Free memory was 304.4MB in the beginning and 295.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * TraceAbstraction took 752924.68ms. Allocated memory was 346.0MB in the beginning and 7.6GB in the end (delta: 7.3GB). Free memory was 294.7MB in the beginning and 5.0GB in the end (delta: -4.7GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 44 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 752.9s, OverallIterations: 153, TraceHistogramMax: 3, PathProgramHistogramMax: 117, EmptinessCheckTime: 5.3s, AutomataDifference: 548.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 98749 SdHoareTripleChecker+Valid, 91.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98749 mSDsluCounter, 69793 SdHoareTripleChecker+Invalid, 76.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 47762 IncrementalHoareTripleChecker+Unchecked, 116921 mSDsCounter, 22441 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 189338 IncrementalHoareTripleChecker+Invalid, 259541 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22441 mSolverCounterUnsat, 5027 mSDtfsCounter, 189338 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24584 GetRequests, 7250 SyntacticMatches, 356 SemanticMatches, 16978 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1119788 ImplicationChecksByTransitivity, 446.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45472occurred in iteration=150, InterpolantAutomatonStates: 15582, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 72.3s AutomataMinimizationTime, 153 MinimizatonAttempts, 1638356 StatesRemovedByMinimization, 151 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 87.9s InterpolantComputationTime, 8922 NumberOfCodeBlocks, 8892 NumberOfCodeBlocksAsserted, 537 NumberOfCheckSat, 12907 ConstructedInterpolants, 536 QuantifiedInterpolants, 151898 SizeOfPredicates, 1436 NumberOfNonLiveVariables, 10814 ConjunctsInSsa, 2087 ConjunctsInUnsatCore, 455 InterpolantComputations, 2 PerfectInterpolantSequences, 1513/4489 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown