/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/threaded-sum-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 21:50:03,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 21:50:03,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 21:50:04,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 21:50:04,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 21:50:04,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 21:50:04,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 21:50:04,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 21:50:04,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 21:50:04,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 21:50:04,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 21:50:04,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 21:50:04,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 21:50:04,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 21:50:04,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 21:50:04,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 21:50:04,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 21:50:04,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 21:50:04,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 21:50:04,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 21:50:04,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 21:50:04,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 21:50:04,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 21:50:04,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 21:50:04,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 21:50:04,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 21:50:04,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 21:50:04,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 21:50:04,060 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 21:50:04,087 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 21:50:04,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 21:50:04,089 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 21:50:04,089 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 21:50:04,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 21:50:04,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 21:50:04,090 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 21:50:04,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 21:50:04,090 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 21:50:04,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 21:50:04,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 21:50:04,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 21:50:04,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 21:50:04,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 21:50:04,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 21:50:04,092 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 21:50:04,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 21:50:04,092 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 21:50:04,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 21:50:04,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 21:50:04,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 21:50:04,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 21:50:04,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 21:50:04,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:50:04,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 21:50:04,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 21:50:04,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 21:50:04,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 21:50:04,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 21:50:04,095 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 21:50:04,095 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 21:50:04,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 21:50:04,095 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 21:50:04,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 21:50:04,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 21:50:04,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 21:50:04,338 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 21:50:04,341 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 21:50:04,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/threaded-sum-2.wvr.bpl [2022-03-15 21:50:04,342 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/threaded-sum-2.wvr.bpl' [2022-03-15 21:50:04,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 21:50:04,368 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 21:50:04,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 21:50:04,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 21:50:04,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 21:50:04,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:50:04" (1/1) ... [2022-03-15 21:50:04,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:50:04" (1/1) ... [2022-03-15 21:50:04,391 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 21:50:04,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 21:50:04,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 21:50:04,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 21:50:04,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 21:50:04,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:50:04" (1/1) ... [2022-03-15 21:50:04,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:50:04" (1/1) ... [2022-03-15 21:50:04,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:50:04" (1/1) ... [2022-03-15 21:50:04,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:50:04" (1/1) ... [2022-03-15 21:50:04,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:50:04" (1/1) ... [2022-03-15 21:50:04,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:50:04" (1/1) ... [2022-03-15 21:50:04,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:50:04" (1/1) ... [2022-03-15 21:50:04,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 21:50:04,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 21:50:04,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 21:50:04,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 21:50:04,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:50:04" (1/1) ... [2022-03-15 21:50:04,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 21:50:04,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:04,443 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) [2022-03-15 21:50:04,444 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 [2022-03-15 21:50:04,475 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 21:50:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 21:50:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 21:50:04,476 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 21:50:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 21:50:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 21:50:04,476 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 21:50:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 21:50:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 21:50:04,477 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 21:50:04,510 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 21:50:04,512 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 21:50:04,579 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 21:50:04,594 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 21:50:04,594 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 21:50:04,596 INFO L202 PluginConnector]: Adding new model threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:50:04 BoogieIcfgContainer [2022-03-15 21:50:04,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 21:50:04,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 21:50:04,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 21:50:04,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 21:50:04,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 09:50:04" (1/2) ... [2022-03-15 21:50:04,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f13463b and model type threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 09:50:04, skipping insertion in model container [2022-03-15 21:50:04,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 09:50:04" (2/2) ... [2022-03-15 21:50:04,602 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-2.wvr.bpl [2022-03-15 21:50:04,606 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 21:50:04,606 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 21:50:04,606 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 21:50:04,607 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 21:50:04,633 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 21:50:04,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 21:50:04,673 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 21:50:04,673 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 21:50:04,681 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 21:50:04,689 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 24 transitions, 64 flow [2022-03-15 21:50:04,691 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 24 transitions, 64 flow [2022-03-15 21:50:04,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 64 flow [2022-03-15 21:50:04,719 INFO L129 PetriNetUnfolder]: 2/22 cut-off events. [2022-03-15 21:50:04,719 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-03-15 21:50:04,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2022-03-15 21:50:04,722 INFO L116 LiptonReduction]: Number of co-enabled transitions 58 [2022-03-15 21:50:04,920 INFO L131 LiptonReduction]: Checked pairs total: 125 [2022-03-15 21:50:04,920 INFO L133 LiptonReduction]: Total number of compositions: 10 [2022-03-15 21:50:04,927 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 46 flow [2022-03-15 21:50:04,938 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:04,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-15 21:50:04,944 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:04,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:04,945 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:04,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1605613672, now seen corresponding path program 1 times [2022-03-15 21:50:04,963 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:04,963 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618310666] [2022-03-15 21:50:04,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:04,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:05,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:05,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618310666] [2022-03-15 21:50:05,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618310666] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:50:05,054 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:50:05,054 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 21:50:05,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [401261901] [2022-03-15 21:50:05,056 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:05,058 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:05,067 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 14 transitions. [2022-03-15 21:50:05,068 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:05,161 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 21:50:05,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 21:50:05,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:05,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 21:50:05,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 21:50:05,182 INFO L87 Difference]: Start difference. First operand has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:05,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:05,213 INFO L93 Difference]: Finished difference Result 20 states and 35 transitions. [2022-03-15 21:50:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 21:50:05,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-03-15 21:50:05,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:05,225 INFO L225 Difference]: With dead ends: 20 [2022-03-15 21:50:05,225 INFO L226 Difference]: Without dead ends: 20 [2022-03-15 21:50:05,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 21:50:05,231 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:05,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:50:05,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-03-15 21:50:05,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-03-15 21:50:05,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:05,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 35 transitions. [2022-03-15 21:50:05,264 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 35 transitions. Word has length 8 [2022-03-15 21:50:05,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:05,265 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 35 transitions. [2022-03-15 21:50:05,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:05,265 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 35 transitions. [2022-03-15 21:50:05,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-03-15 21:50:05,266 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:05,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:05,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 21:50:05,267 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:05,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:05,269 INFO L85 PathProgramCache]: Analyzing trace with hash 361521378, now seen corresponding path program 1 times [2022-03-15 21:50:05,270 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:05,270 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826752065] [2022-03-15 21:50:05,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:05,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:05,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:05,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826752065] [2022-03-15 21:50:05,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826752065] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:50:05,309 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:50:05,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 21:50:05,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1737765449] [2022-03-15 21:50:05,309 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:05,310 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:05,314 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2022-03-15 21:50:05,314 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:05,335 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 21:50:05,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 21:50:05,337 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:05,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 21:50:05,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 21:50:05,338 INFO L87 Difference]: Start difference. First operand 20 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:05,384 INFO L93 Difference]: Finished difference Result 36 states and 67 transitions. [2022-03-15 21:50:05,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 21:50:05,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-03-15 21:50:05,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:05,395 INFO L225 Difference]: With dead ends: 36 [2022-03-15 21:50:05,395 INFO L226 Difference]: Without dead ends: 36 [2022-03-15 21:50:05,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 21:50:05,397 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:05,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 4 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:50:05,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-03-15 21:50:05,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-03-15 21:50:05,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 34 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) [2022-03-15 21:50:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 66 transitions. [2022-03-15 21:50:05,413 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 66 transitions. Word has length 10 [2022-03-15 21:50:05,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:05,413 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 66 transitions. [2022-03-15 21:50:05,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:05,414 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 66 transitions. [2022-03-15 21:50:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 21:50:05,414 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:05,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:05,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 21:50:05,419 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:05,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:05,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1595176032, now seen corresponding path program 1 times [2022-03-15 21:50:05,422 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:05,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687874141] [2022-03-15 21:50:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:05,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:50:05,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:05,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687874141] [2022-03-15 21:50:05,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687874141] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 21:50:05,478 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 21:50:05,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 21:50:05,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [136980555] [2022-03-15 21:50:05,478 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:05,479 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:05,484 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2022-03-15 21:50:05,484 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:05,573 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 21:50:05,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 21:50:05,574 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:05,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 21:50:05,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 21:50:05,575 INFO L87 Difference]: Start difference. First operand 35 states and 66 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:05,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:05,604 INFO L93 Difference]: Finished difference Result 47 states and 86 transitions. [2022-03-15 21:50:05,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 21:50:05,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-03-15 21:50:05,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:05,608 INFO L225 Difference]: With dead ends: 47 [2022-03-15 21:50:05,608 INFO L226 Difference]: Without dead ends: 47 [2022-03-15 21:50:05,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 21:50:05,610 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 14 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:05,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 2 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:50:05,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-03-15 21:50:05,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2022-03-15 21:50:05,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 36 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) [2022-03-15 21:50:05,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 71 transitions. [2022-03-15 21:50:05,622 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 71 transitions. Word has length 12 [2022-03-15 21:50:05,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:05,622 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 71 transitions. [2022-03-15 21:50:05,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:05,623 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 71 transitions. [2022-03-15 21:50:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 21:50:05,624 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:05,624 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:05,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 21:50:05,624 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:05,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:05,625 INFO L85 PathProgramCache]: Analyzing trace with hash -522479186, now seen corresponding path program 2 times [2022-03-15 21:50:05,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:05,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712865063] [2022-03-15 21:50:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:05,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:05,938 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:05,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712865063] [2022-03-15 21:50:05,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712865063] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:05,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874763590] [2022-03-15 21:50:05,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 21:50:05,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:05,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:05,942 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) [2022-03-15 21:50:05,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 21:50:05,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 21:50:05,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:05,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 21:50:05,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:06,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:06,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:06,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874763590] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:06,897 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:06,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2022-03-15 21:50:06,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [584996510] [2022-03-15 21:50:06,897 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:06,898 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:06,900 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2022-03-15 21:50:06,900 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:07,162 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [467#(and (or (<= m (+ T S)) (< 1 t) (< 0 s)) (or (< 1 t) (< (+ T S) (+ m 1)) (< 0 s))), 434#(or (and (<= m (+ T S)) (< (+ T S) (+ m 1))) (< 0 s) (< 0 t)), 466#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t)))] [2022-03-15 21:50:07,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 21:50:07,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:07,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 21:50:07,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-03-15 21:50:07,163 INFO L87 Difference]: Start difference. First operand 37 states and 71 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 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) [2022-03-15 21:50:07,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:07,453 INFO L93 Difference]: Finished difference Result 93 states and 188 transitions. [2022-03-15 21:50:07,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 21:50:07,454 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 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 14 [2022-03-15 21:50:07,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:07,455 INFO L225 Difference]: With dead ends: 93 [2022-03-15 21:50:07,455 INFO L226 Difference]: Without dead ends: 86 [2022-03-15 21:50:07,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=512, Unknown=0, NotChecked=0, Total=702 [2022-03-15 21:50:07,456 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 35 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:07,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:07,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-03-15 21:50:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 45. [2022-03-15 21:50:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 2.022727272727273) internal successors, (89), 44 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 89 transitions. [2022-03-15 21:50:07,462 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 89 transitions. Word has length 14 [2022-03-15 21:50:07,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:07,462 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 89 transitions. [2022-03-15 21:50:07,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 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) [2022-03-15 21:50:07,463 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 89 transitions. [2022-03-15 21:50:07,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 21:50:07,463 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:07,464 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:07,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:07,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:07,665 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:07,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:07,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1625236366, now seen corresponding path program 3 times [2022-03-15 21:50:07,667 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:07,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665655440] [2022-03-15 21:50:07,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:07,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:07,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:07,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665655440] [2022-03-15 21:50:07,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665655440] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:07,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125472780] [2022-03-15 21:50:07,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 21:50:07,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:07,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:07,854 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) [2022-03-15 21:50:07,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 21:50:07,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 21:50:07,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:07,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 21:50:07,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:08,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:08,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:08,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125472780] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:08,502 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:08,502 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 20 [2022-03-15 21:50:08,502 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [786798545] [2022-03-15 21:50:08,502 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:08,503 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:08,505 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2022-03-15 21:50:08,505 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:08,789 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [765#(and (or (< 1 t) (<= (+ m 1) (+ T S))) (or (< 1 t) (<= (+ T S 1) (+ m t s)))), 761#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 763#(and (or (<= (+ T S) (+ m s)) (< 0 t)) (or (<= (+ m 1) (+ T S)) (< 0 t))), 764#(and (or (<= (+ T S) (+ m t s)) (< 0 t)) (or (<= (+ m 1) (+ T S)) (< 0 t))), 762#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t)))] [2022-03-15 21:50:08,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 21:50:08,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:08,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 21:50:08,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2022-03-15 21:50:08,791 INFO L87 Difference]: Start difference. First operand 45 states and 89 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:09,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:09,076 INFO L93 Difference]: Finished difference Result 77 states and 152 transitions. [2022-03-15 21:50:09,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 21:50:09,076 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-03-15 21:50:09,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:09,077 INFO L225 Difference]: With dead ends: 77 [2022-03-15 21:50:09,077 INFO L226 Difference]: Without dead ends: 70 [2022-03-15 21:50:09,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=266, Invalid=790, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 21:50:09,078 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:09,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:09,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-03-15 21:50:09,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 57. [2022-03-15 21:50:09,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 56 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:09,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 115 transitions. [2022-03-15 21:50:09,084 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 115 transitions. Word has length 14 [2022-03-15 21:50:09,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:09,084 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 115 transitions. [2022-03-15 21:50:09,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:09,084 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 115 transitions. [2022-03-15 21:50:09,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 21:50:09,085 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:09,085 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:09,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:09,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:09,308 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:09,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:09,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1243643262, now seen corresponding path program 4 times [2022-03-15 21:50:09,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:09,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056216105] [2022-03-15 21:50:09,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:09,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:09,445 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:09,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056216105] [2022-03-15 21:50:09,445 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056216105] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:09,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561958267] [2022-03-15 21:50:09,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 21:50:09,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:09,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:09,447 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) [2022-03-15 21:50:09,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 21:50:09,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 21:50:09,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:09,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 21:50:09,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:09,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:10,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561958267] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:10,181 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:10,181 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2022-03-15 21:50:10,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [564718331] [2022-03-15 21:50:10,181 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:10,182 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:10,184 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2022-03-15 21:50:10,184 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:10,413 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [1069#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 1071#(and (<= m (+ T S)) (or (not (< 0 s)) (<= (+ m 1) (+ T S))) (or (<= (+ T S) (+ m t s)) (< (+ T S) (+ m 1)) (< 0 s)) (or (< (+ T S) (+ 2 m)) (<= (+ T S) (+ m t s)))), 1070#(and (<= m (+ T S)) (or (not (< 0 s)) (<= (+ T S) (+ m s))) (or (< (+ T S) (+ m 1)) (< 0 s)) (or (not (< 0 s)) (<= (+ m 1) (+ T S))))] [2022-03-15 21:50:10,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 21:50:10,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:10,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 21:50:10,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-03-15 21:50:10,414 INFO L87 Difference]: Start difference. First operand 57 states and 115 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:10,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:10,832 INFO L93 Difference]: Finished difference Result 99 states and 194 transitions. [2022-03-15 21:50:10,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 21:50:10,832 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-03-15 21:50:10,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:10,833 INFO L225 Difference]: With dead ends: 99 [2022-03-15 21:50:10,833 INFO L226 Difference]: Without dead ends: 87 [2022-03-15 21:50:10,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=282, Invalid=908, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 21:50:10,834 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 49 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:10,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 2 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:10,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-03-15 21:50:10,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 59. [2022-03-15 21:50:10,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 2.0517241379310347) internal successors, (119), 58 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:10,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 119 transitions. [2022-03-15 21:50:10,840 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 119 transitions. Word has length 14 [2022-03-15 21:50:10,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:10,840 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 119 transitions. [2022-03-15 21:50:10,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:10,840 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 119 transitions. [2022-03-15 21:50:10,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 21:50:10,841 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:10,841 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:10,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:11,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:11,052 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:11,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:11,052 INFO L85 PathProgramCache]: Analyzing trace with hash 957464108, now seen corresponding path program 5 times [2022-03-15 21:50:11,053 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:11,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657094827] [2022-03-15 21:50:11,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:11,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:11,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:11,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657094827] [2022-03-15 21:50:11,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657094827] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:11,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596985245] [2022-03-15 21:50:11,246 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 21:50:11,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:11,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:11,247 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) [2022-03-15 21:50:11,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 21:50:11,281 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 21:50:11,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:11,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 21:50:11,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:11,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:11,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:12,493 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:12,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596985245] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:12,494 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:12,494 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2022-03-15 21:50:12,494 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1630746150] [2022-03-15 21:50:12,494 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:12,495 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:12,498 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2022-03-15 21:50:12,498 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:12,750 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [1425#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 1424#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 1426#(and (or (< 1 t) (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s))) (or (<= m (+ T S)) (< 1 t)))] [2022-03-15 21:50:12,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 21:50:12,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:12,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 21:50:12,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2022-03-15 21:50:12,751 INFO L87 Difference]: Start difference. First operand 59 states and 119 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:12,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:12,961 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2022-03-15 21:50:12,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 21:50:12,962 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 21:50:12,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:12,963 INFO L225 Difference]: With dead ends: 99 [2022-03-15 21:50:12,963 INFO L226 Difference]: Without dead ends: 92 [2022-03-15 21:50:12,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=205, Invalid=787, Unknown=0, NotChecked=0, Total=992 [2022-03-15 21:50:12,964 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 34 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:12,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 2 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:12,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-03-15 21:50:12,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 65. [2022-03-15 21:50:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 2.078125) internal successors, (133), 64 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:12,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 133 transitions. [2022-03-15 21:50:12,968 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 133 transitions. Word has length 16 [2022-03-15 21:50:12,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:12,968 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 133 transitions. [2022-03-15 21:50:12,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:12,969 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 133 transitions. [2022-03-15 21:50:12,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 21:50:12,969 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:12,969 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:12,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:13,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:13,180 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:13,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:13,180 INFO L85 PathProgramCache]: Analyzing trace with hash -145293072, now seen corresponding path program 6 times [2022-03-15 21:50:13,181 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:13,181 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119689659] [2022-03-15 21:50:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:13,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:13,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:13,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119689659] [2022-03-15 21:50:13,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119689659] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:13,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650047092] [2022-03-15 21:50:13,376 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 21:50:13,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:13,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:13,377 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) [2022-03-15 21:50:13,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 21:50:13,400 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 21:50:13,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:13,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 21:50:13,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:13,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:14,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650047092] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:14,139 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:14,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 24 [2022-03-15 21:50:14,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2012751470] [2022-03-15 21:50:14,139 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:14,140 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:14,142 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2022-03-15 21:50:14,143 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:14,486 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [1784#(and (or (< 1 t) (<= (+ T S 1) (+ m t s)) (<= s 0)) (or (< 1 t) (not (< 0 s)) (<= (+ m 1) (+ T S)))), 1783#(and (or (<= (+ T S) (+ m t s)) (<= s 0) (< 0 t)) (or (not (< 0 s)) (<= (+ m 1) (+ T S)) (< 0 t))), 1782#(and (or (<= (+ T S) (+ m s)) (< 0 t)) (or (<= (+ m 1) (+ T S)) (< 0 t))), 1780#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 1781#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t)))] [2022-03-15 21:50:14,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 21:50:14,487 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:14,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 21:50:14,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2022-03-15 21:50:14,488 INFO L87 Difference]: Start difference. First operand 65 states and 133 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:15,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:15,035 INFO L93 Difference]: Finished difference Result 96 states and 191 transitions. [2022-03-15 21:50:15,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 21:50:15,035 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 21:50:15,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:15,036 INFO L225 Difference]: With dead ends: 96 [2022-03-15 21:50:15,036 INFO L226 Difference]: Without dead ends: 91 [2022-03-15 21:50:15,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=388, Invalid=1504, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 21:50:15,037 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:15,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:15,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-03-15 21:50:15,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 70. [2022-03-15 21:50:15,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.1159420289855073) internal successors, (146), 69 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:15,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 146 transitions. [2022-03-15 21:50:15,042 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 146 transitions. Word has length 16 [2022-03-15 21:50:15,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:15,042 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 146 transitions. [2022-03-15 21:50:15,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:15,042 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 146 transitions. [2022-03-15 21:50:15,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 21:50:15,043 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:15,043 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:15,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:15,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:15,244 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:15,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:15,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1482458736, now seen corresponding path program 7 times [2022-03-15 21:50:15,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:15,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242835286] [2022-03-15 21:50:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:15,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:15,489 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:15,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242835286] [2022-03-15 21:50:15,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242835286] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:15,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94219336] [2022-03-15 21:50:15,489 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 21:50:15,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:15,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:15,492 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) [2022-03-15 21:50:15,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 21:50:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:15,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 21:50:15,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:15,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:16,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94219336] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:16,443 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:16,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2022-03-15 21:50:16,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1450325937] [2022-03-15 21:50:16,443 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:16,444 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:16,446 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 30 transitions. [2022-03-15 21:50:16,446 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:16,634 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [2162#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 2164#(and (or (< 1 t) (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s))) (or (<= m (+ T S)) (< 1 t))), 2163#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t)))] [2022-03-15 21:50:16,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 21:50:16,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:16,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 21:50:16,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2022-03-15 21:50:16,640 INFO L87 Difference]: Start difference. First operand 70 states and 146 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:16,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:16,912 INFO L93 Difference]: Finished difference Result 99 states and 203 transitions. [2022-03-15 21:50:16,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 21:50:16,915 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 21:50:16,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:16,916 INFO L225 Difference]: With dead ends: 99 [2022-03-15 21:50:16,916 INFO L226 Difference]: Without dead ends: 94 [2022-03-15 21:50:16,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=229, Invalid=827, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 21:50:16,917 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:16,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:16,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-03-15 21:50:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 71. [2022-03-15 21:50:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.1142857142857143) internal successors, (148), 70 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:16,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 148 transitions. [2022-03-15 21:50:16,921 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 148 transitions. Word has length 16 [2022-03-15 21:50:16,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:16,921 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 148 transitions. [2022-03-15 21:50:16,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:16,921 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 148 transitions. [2022-03-15 21:50:16,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 21:50:16,922 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:16,922 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:16,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:17,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:17,128 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:17,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:17,128 INFO L85 PathProgramCache]: Analyzing trace with hash 961979060, now seen corresponding path program 8 times [2022-03-15 21:50:17,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:17,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207000818] [2022-03-15 21:50:17,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:17,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:17,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:50:17,281 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:17,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207000818] [2022-03-15 21:50:17,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207000818] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:17,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904096195] [2022-03-15 21:50:17,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 21:50:17,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:17,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:17,283 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) [2022-03-15 21:50:17,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 21:50:17,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 21:50:17,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:17,307 WARN L261 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 21:50:17,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:17,617 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:17,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:17,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904096195] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:17,946 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:17,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 24 [2022-03-15 21:50:17,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [846395329] [2022-03-15 21:50:17,946 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:17,947 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:17,949 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2022-03-15 21:50:17,949 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:18,269 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [2532#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 2537#(and (or (< 1 t) (<= (+ T S 1) (+ m t s))) (or (< 1 t) (<= (+ m s) (+ T S)))), 2533#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 2534#(and (or (<= (+ m s) (+ T S)) (< 0 t)) (or (not (<= s 0)) (< 0 t)) (or (<= (+ T S) (+ m s)) (< 0 t))), 2536#(and (or (<= (+ m s) (+ T S)) (< 0 t)) (or (<= (+ T S) (+ m t s)) (< 0 t)) (or (< 0 s) (< 0 t))), 2535#(and (or (<= (+ m s) (+ T S)) (< 0 t)) (or (<= (+ T S) (+ m t s)) (< 0 t)))] [2022-03-15 21:50:18,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 21:50:18,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:18,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 21:50:18,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2022-03-15 21:50:18,270 INFO L87 Difference]: Start difference. First operand 71 states and 148 transitions. Second operand has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:18,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:18,485 INFO L93 Difference]: Finished difference Result 107 states and 211 transitions. [2022-03-15 21:50:18,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 21:50:18,485 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 21:50:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:18,486 INFO L225 Difference]: With dead ends: 107 [2022-03-15 21:50:18,486 INFO L226 Difference]: Without dead ends: 92 [2022-03-15 21:50:18,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=936, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 21:50:18,487 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:18,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:18,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-03-15 21:50:18,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 82. [2022-03-15 21:50:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.0864197530864197) internal successors, (169), 81 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:18,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 169 transitions. [2022-03-15 21:50:18,500 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 169 transitions. Word has length 16 [2022-03-15 21:50:18,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:18,500 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 169 transitions. [2022-03-15 21:50:18,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:18,500 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 169 transitions. [2022-03-15 21:50:18,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 21:50:18,501 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:18,501 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:18,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:18,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:18,702 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:18,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:18,702 INFO L85 PathProgramCache]: Analyzing trace with hash 429321448, now seen corresponding path program 9 times [2022-03-15 21:50:18,703 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:18,703 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381248642] [2022-03-15 21:50:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:18,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:50:18,745 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:18,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381248642] [2022-03-15 21:50:18,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381248642] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:18,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876840269] [2022-03-15 21:50:18,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 21:50:18,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:18,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:18,746 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) [2022-03-15 21:50:18,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 21:50:18,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 21:50:18,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:18,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 21:50:18,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:50:18,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:18,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876840269] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:18,931 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:18,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 7] total 10 [2022-03-15 21:50:18,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1074179269] [2022-03-15 21:50:18,933 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:18,933 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:18,935 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 30 transitions. [2022-03-15 21:50:18,935 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:19,023 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [2918#(< 0 t), 2881#(or (< 0 s) (< 0 t)), 2919#(or (< 1 s) (< 1 t)), 2885#(or (< 1 s) (< 0 t))] [2022-03-15 21:50:19,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 21:50:19,024 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:19,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 21:50:19,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-03-15 21:50:19,025 INFO L87 Difference]: Start difference. First operand 82 states and 169 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:19,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:19,106 INFO L93 Difference]: Finished difference Result 127 states and 259 transitions. [2022-03-15 21:50:19,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 21:50:19,106 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 21:50:19,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:19,107 INFO L225 Difference]: With dead ends: 127 [2022-03-15 21:50:19,107 INFO L226 Difference]: Without dead ends: 127 [2022-03-15 21:50:19,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2022-03-15 21:50:19,108 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:19,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:19,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-03-15 21:50:19,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 80. [2022-03-15 21:50:19,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.088607594936709) internal successors, (165), 79 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:19,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 165 transitions. [2022-03-15 21:50:19,112 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 165 transitions. Word has length 16 [2022-03-15 21:50:19,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:19,112 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 165 transitions. [2022-03-15 21:50:19,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:19,112 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 165 transitions. [2022-03-15 21:50:19,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 21:50:19,113 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:19,113 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:19,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:19,327 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,SelfDestructingSolverStorable10 [2022-03-15 21:50:19,327 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:19,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:19,328 INFO L85 PathProgramCache]: Analyzing trace with hash -803844684, now seen corresponding path program 10 times [2022-03-15 21:50:19,329 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:19,329 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921398024] [2022-03-15 21:50:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:19,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:19,471 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:19,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921398024] [2022-03-15 21:50:19,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921398024] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:19,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140614782] [2022-03-15 21:50:19,471 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 21:50:19,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:19,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:19,472 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) [2022-03-15 21:50:19,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 21:50:19,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 21:50:19,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:19,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 21:50:19,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:19,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:20,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140614782] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:20,371 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:20,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2022-03-15 21:50:20,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2022851812] [2022-03-15 21:50:20,371 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:20,372 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:20,374 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 26 transitions. [2022-03-15 21:50:20,374 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:20,520 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [3328#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 3329#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 3330#(and (or (< 1 t) (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s))) (or (<= m (+ T S)) (< 1 t)))] [2022-03-15 21:50:20,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 21:50:20,520 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:20,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 21:50:20,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2022-03-15 21:50:20,521 INFO L87 Difference]: Start difference. First operand 80 states and 165 transitions. Second operand has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:20,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:20,683 INFO L93 Difference]: Finished difference Result 107 states and 214 transitions. [2022-03-15 21:50:20,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 21:50:20,683 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 21:50:20,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:20,684 INFO L225 Difference]: With dead ends: 107 [2022-03-15 21:50:20,684 INFO L226 Difference]: Without dead ends: 100 [2022-03-15 21:50:20,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=247, Invalid=745, Unknown=0, NotChecked=0, Total=992 [2022-03-15 21:50:20,685 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:20,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:20,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-03-15 21:50:20,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 75. [2022-03-15 21:50:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.081081081081081) internal successors, (154), 74 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 154 transitions. [2022-03-15 21:50:20,688 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 154 transitions. Word has length 16 [2022-03-15 21:50:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:20,688 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 154 transitions. [2022-03-15 21:50:20,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:20,689 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 154 transitions. [2022-03-15 21:50:20,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 21:50:20,689 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:20,689 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:20,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:20,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:20,903 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:20,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:20,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1124812066, now seen corresponding path program 11 times [2022-03-15 21:50:20,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:20,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774823550] [2022-03-15 21:50:20,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:20,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 21:50:20,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:20,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774823550] [2022-03-15 21:50:20,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774823550] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:20,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052309249] [2022-03-15 21:50:20,942 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 21:50:20,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:20,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:20,944 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) [2022-03-15 21:50:20,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 21:50:20,964 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 21:50:20,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:20,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 21:50:20,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 21:50:21,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 21:50:21,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052309249] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:21,112 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 21:50:21,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 4 [2022-03-15 21:50:21,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [920592450] [2022-03-15 21:50:21,112 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:21,113 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:21,115 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 36 transitions. [2022-03-15 21:50:21,115 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:21,200 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 21:50:21,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 21:50:21,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:21,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 21:50:21,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 21:50:21,201 INFO L87 Difference]: Start difference. First operand 75 states and 154 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:21,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:21,222 INFO L93 Difference]: Finished difference Result 104 states and 210 transitions. [2022-03-15 21:50:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 21:50:21,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 21:50:21,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:21,223 INFO L225 Difference]: With dead ends: 104 [2022-03-15 21:50:21,223 INFO L226 Difference]: Without dead ends: 104 [2022-03-15 21:50:21,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 14 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-15 21:50:21,223 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 13 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:21,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 3 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 21:50:21,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-03-15 21:50:21,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 69. [2022-03-15 21:50:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.088235294117647) internal successors, (142), 68 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 142 transitions. [2022-03-15 21:50:21,226 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 142 transitions. Word has length 18 [2022-03-15 21:50:21,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:21,226 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 142 transitions. [2022-03-15 21:50:21,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:21,226 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 142 transitions. [2022-03-15 21:50:21,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 21:50:21,227 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:21,227 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:21,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:21,435 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,SelfDestructingSolverStorable12 [2022-03-15 21:50:21,435 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:21,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:21,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1553309618, now seen corresponding path program 12 times [2022-03-15 21:50:21,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:21,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644451410] [2022-03-15 21:50:21,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:21,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:21,591 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 21:50:21,591 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:21,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644451410] [2022-03-15 21:50:21,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644451410] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:21,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071853713] [2022-03-15 21:50:21,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 21:50:21,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:21,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:21,593 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) [2022-03-15 21:50:21,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 21:50:21,623 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 21:50:21,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:21,624 WARN L261 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 21:50:21,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:22,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:22,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071853713] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:22,431 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:22,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 27 [2022-03-15 21:50:22,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [209786172] [2022-03-15 21:50:22,431 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:22,432 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:22,434 INFO L252 McrAutomatonBuilder]: Finished intersection with 30 states and 40 transitions. [2022-03-15 21:50:22,434 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:22,867 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [4080#(and (or (<= (+ m s) (+ T S)) (< 0 t)) (or (<= 1 s) (< 0 t)) (or (<= (+ T S) (+ m t s)) (< 0 t))), 4079#(and (or (<= (+ m s) (+ T S)) (< 0 t)) (or (<= (+ T S) (+ m t s)) (< 0 t))), 4077#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 4081#(and (or (< 1 t) (<= (+ T S 1) (+ m t s))) (or (< 1 t) (<= (+ m s) (+ T S)))), 4076#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 4078#(and (or (<= (+ m s) (+ T S)) (< 0 t)) (or (not (<= s 0)) (< 0 t)) (or (<= (+ T S) (+ m s)) (< 0 t)))] [2022-03-15 21:50:22,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 21:50:22,868 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:22,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 21:50:22,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=908, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 21:50:22,868 INFO L87 Difference]: Start difference. First operand 69 states and 142 transitions. Second operand has 17 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:23,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:23,038 INFO L93 Difference]: Finished difference Result 105 states and 202 transitions. [2022-03-15 21:50:23,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 21:50:23,038 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 21:50:23,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:23,039 INFO L225 Difference]: With dead ends: 105 [2022-03-15 21:50:23,039 INFO L226 Difference]: Without dead ends: 90 [2022-03-15 21:50:23,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 21:50:23,040 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:23,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:23,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-03-15 21:50:23,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2022-03-15 21:50:23,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.028169014084507) internal successors, (144), 71 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:23,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 144 transitions. [2022-03-15 21:50:23,042 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 144 transitions. Word has length 18 [2022-03-15 21:50:23,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:23,043 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 144 transitions. [2022-03-15 21:50:23,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:23,043 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 144 transitions. [2022-03-15 21:50:23,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 21:50:23,043 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:23,043 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:23,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:23,247 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,SelfDestructingSolverStorable13 [2022-03-15 21:50:23,247 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:23,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:23,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2123409186, now seen corresponding path program 13 times [2022-03-15 21:50:23,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:23,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002007020] [2022-03-15 21:50:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:23,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:23,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:23,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002007020] [2022-03-15 21:50:23,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002007020] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:23,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043046629] [2022-03-15 21:50:23,421 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 21:50:23,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:23,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:23,422 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) [2022-03-15 21:50:23,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 21:50:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:23,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 21:50:23,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:23,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:24,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043046629] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:24,343 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:24,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-15 21:50:24,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1167604475] [2022-03-15 21:50:24,343 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:24,344 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:24,345 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 34 transitions. [2022-03-15 21:50:24,345 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:24,562 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4472#(and (or (<= m (+ T S)) (< 1 t) (< 0 s)) (or (< 1 t) (< (+ T S) (+ m 1)) (< 0 s))), 4473#(and (or (<= 1 s) (<= (+ T S 1) (+ m t))) (or (<= 1 s) (<= (+ m t) (+ T S 1))) (<= 0 s)), 4471#(and (or (< (+ T S) (+ m 1)) (< 0 s) (< 0 t)) (or (<= m (+ T S)) (< 0 s) (< 0 t))), 4470#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t)))] [2022-03-15 21:50:24,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 21:50:24,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:24,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 21:50:24,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=832, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 21:50:24,563 INFO L87 Difference]: Start difference. First operand 72 states and 144 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:25,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:25,053 INFO L93 Difference]: Finished difference Result 153 states and 303 transitions. [2022-03-15 21:50:25,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 21:50:25,054 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 21:50:25,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:25,055 INFO L225 Difference]: With dead ends: 153 [2022-03-15 21:50:25,055 INFO L226 Difference]: Without dead ends: 145 [2022-03-15 21:50:25,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 15 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=505, Invalid=1565, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 21:50:25,056 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 61 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:25,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 0 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:25,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-03-15 21:50:25,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 90. [2022-03-15 21:50:25,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.056179775280899) internal successors, (183), 89 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 183 transitions. [2022-03-15 21:50:25,059 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 183 transitions. Word has length 18 [2022-03-15 21:50:25,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:25,060 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 183 transitions. [2022-03-15 21:50:25,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:25,060 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 183 transitions. [2022-03-15 21:50:25,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 21:50:25,060 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:25,060 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:25,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-03-15 21:50:25,261 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,SelfDestructingSolverStorable14 [2022-03-15 21:50:25,261 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:25,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:25,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1020652006, now seen corresponding path program 14 times [2022-03-15 21:50:25,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:25,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115591997] [2022-03-15 21:50:25,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:25,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:25,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:25,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115591997] [2022-03-15 21:50:25,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115591997] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:25,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109773025] [2022-03-15 21:50:25,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 21:50:25,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:25,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:25,454 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) [2022-03-15 21:50:25,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 21:50:25,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 21:50:25,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:25,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 21:50:25,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:25,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:26,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109773025] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:26,282 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:26,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 28 [2022-03-15 21:50:26,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [857769414] [2022-03-15 21:50:26,282 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:26,282 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:26,284 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 36 transitions. [2022-03-15 21:50:26,284 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:26,576 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [4917#(or (and (<= m (+ T S)) (< (+ T S) (+ m 1))) (< 0 s) (< 0 t)), 4967#(and (or (<= (+ T S) (+ m t 1)) (<= 2 s) (< 0 t)) (or (<= 2 s) (<= (+ m 1) (+ T S)) (< 0 t))), 4965#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 4968#(and (or (< 1 t) (<= 2 s) (<= (+ m 1) (+ T S))) (or (<= (+ T S) (+ m t)) (< 1 t) (<= 2 s))), 4966#(and (or (not (<= s 0)) (< 0 t)) (or (<= 2 s) (<= (+ T S) (+ m 1)) (< 0 t)) (or (<= 2 s) (<= (+ m 1) (+ T S)) (< 0 t)))] [2022-03-15 21:50:26,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 21:50:26,576 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:26,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 21:50:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=885, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 21:50:26,577 INFO L87 Difference]: Start difference. First operand 90 states and 183 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:27,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:27,141 INFO L93 Difference]: Finished difference Result 198 states and 409 transitions. [2022-03-15 21:50:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 21:50:27,142 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 21:50:27,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:27,143 INFO L225 Difference]: With dead ends: 198 [2022-03-15 21:50:27,143 INFO L226 Difference]: Without dead ends: 193 [2022-03-15 21:50:27,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 15 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=528, Invalid=1728, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 21:50:27,146 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 78 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:27,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 0 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:27,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-03-15 21:50:27,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 104. [2022-03-15 21:50:27,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.1262135922330097) internal successors, (219), 103 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:27,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 219 transitions. [2022-03-15 21:50:27,150 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 219 transitions. Word has length 18 [2022-03-15 21:50:27,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:27,150 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 219 transitions. [2022-03-15 21:50:27,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 219 transitions. [2022-03-15 21:50:27,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 21:50:27,150 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:27,150 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:27,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:27,355 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,SelfDestructingSolverStorable15 [2022-03-15 21:50:27,355 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:27,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:27,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1402245110, now seen corresponding path program 15 times [2022-03-15 21:50:27,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:27,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084234498] [2022-03-15 21:50:27,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:27,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:27,549 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:27,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:27,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084234498] [2022-03-15 21:50:27,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084234498] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:27,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113631699] [2022-03-15 21:50:27,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 21:50:27,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:27,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:27,552 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) [2022-03-15 21:50:27,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 21:50:27,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-15 21:50:27,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:27,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 21:50:27,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:27,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:28,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113631699] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:28,439 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:28,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2022-03-15 21:50:28,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [202234584] [2022-03-15 21:50:28,440 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:28,441 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:28,442 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2022-03-15 21:50:28,443 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:28,706 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [5534#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 5535#(and (or (<= m (+ T S)) (< 0 s)) (or (<= (+ T S) (+ m t)) (< (+ T S) (+ m 1)) (< 0 s)) (or (<= (+ T S) (+ m t 1)) (< (+ T S) (+ 2 m)) (<= 2 s)) (or (<= 2 s) (not (< 0 s)) (<= (+ m 1) (+ T S)))), 5533#(and (or (< (+ T S) (+ 2 m)) (<= 2 s)) (or (<= m (+ T S)) (< 0 s)) (or (< (+ T S) (+ m 1)) (< 0 s)) (or (<= 2 s) (not (< 0 s)) (<= (+ m 1) (+ T S))))] [2022-03-15 21:50:28,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 21:50:28,707 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:28,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 21:50:28,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-03-15 21:50:28,708 INFO L87 Difference]: Start difference. First operand 104 states and 219 transitions. Second operand has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:29,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:29,219 INFO L93 Difference]: Finished difference Result 191 states and 400 transitions. [2022-03-15 21:50:29,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 21:50:29,220 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 21:50:29,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:29,221 INFO L225 Difference]: With dead ends: 191 [2022-03-15 21:50:29,221 INFO L226 Difference]: Without dead ends: 186 [2022-03-15 21:50:29,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=464, Invalid=1428, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 21:50:29,222 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:29,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:29,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-03-15 21:50:29,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 104. [2022-03-15 21:50:29,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.1262135922330097) internal successors, (219), 103 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:29,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 219 transitions. [2022-03-15 21:50:29,226 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 219 transitions. Word has length 18 [2022-03-15 21:50:29,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:29,226 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 219 transitions. [2022-03-15 21:50:29,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:29,226 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 219 transitions. [2022-03-15 21:50:29,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 21:50:29,227 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:29,227 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:29,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-03-15 21:50:29,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:29,439 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:29,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:29,440 INFO L85 PathProgramCache]: Analyzing trace with hash -212514126, now seen corresponding path program 16 times [2022-03-15 21:50:29,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:29,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40695128] [2022-03-15 21:50:29,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:29,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:50:29,648 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:29,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40695128] [2022-03-15 21:50:29,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40695128] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:29,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271047331] [2022-03-15 21:50:29,649 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 21:50:29,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:29,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:29,650 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) [2022-03-15 21:50:29,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 21:50:29,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 21:50:29,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:29,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 21:50:29,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:30,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:30,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271047331] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:30,949 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:30,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 25 [2022-03-15 21:50:30,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2020300077] [2022-03-15 21:50:30,949 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:30,950 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:30,952 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2022-03-15 21:50:30,952 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:31,129 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [6090#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 6091#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 6092#(and (or (< 1 t) (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s))) (or (<= m (+ T S)) (< 1 t)))] [2022-03-15 21:50:31,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 21:50:31,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:31,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 21:50:31,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=675, Unknown=0, NotChecked=0, Total=870 [2022-03-15 21:50:31,131 INFO L87 Difference]: Start difference. First operand 104 states and 219 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:31,285 INFO L93 Difference]: Finished difference Result 113 states and 232 transitions. [2022-03-15 21:50:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 21:50:31,285 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 21:50:31,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:31,286 INFO L225 Difference]: With dead ends: 113 [2022-03-15 21:50:31,286 INFO L226 Difference]: Without dead ends: 106 [2022-03-15 21:50:31,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=224, Invalid=768, Unknown=0, NotChecked=0, Total=992 [2022-03-15 21:50:31,287 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:31,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:31,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-03-15 21:50:31,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 95. [2022-03-15 21:50:31,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 2.127659574468085) internal successors, (200), 94 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:31,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 200 transitions. [2022-03-15 21:50:31,291 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 200 transitions. Word has length 18 [2022-03-15 21:50:31,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:31,291 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 200 transitions. [2022-03-15 21:50:31,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:31,291 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 200 transitions. [2022-03-15 21:50:31,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 21:50:31,292 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:31,292 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:31,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:31,503 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,SelfDestructingSolverStorable17 [2022-03-15 21:50:31,503 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:31,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:31,504 INFO L85 PathProgramCache]: Analyzing trace with hash -297432798, now seen corresponding path program 17 times [2022-03-15 21:50:31,505 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:31,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078406768] [2022-03-15 21:50:31,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:31,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:31,653 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:31,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078406768] [2022-03-15 21:50:31,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078406768] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:31,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502677235] [2022-03-15 21:50:31,654 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 21:50:31,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:31,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:31,655 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) [2022-03-15 21:50:31,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 21:50:31,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 21:50:31,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:31,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 21:50:31,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:31,996 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:31,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:32,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502677235] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:32,632 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:32,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2022-03-15 21:50:32,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [913964111] [2022-03-15 21:50:32,633 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:32,633 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:32,635 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 30 transitions. [2022-03-15 21:50:32,635 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:32,805 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [6535#(and (or (< 1 t) (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s))) (or (<= m (+ T S)) (< 1 t))), 6533#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 6536#(and (<= (+ m t) (+ T S)) (<= (+ T S 1) (+ m t s))), 6534#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t)))] [2022-03-15 21:50:32,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 21:50:32,805 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:32,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 21:50:32,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=975, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 21:50:32,806 INFO L87 Difference]: Start difference. First operand 95 states and 200 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:33,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:33,282 INFO L93 Difference]: Finished difference Result 233 states and 488 transitions. [2022-03-15 21:50:33,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 21:50:33,282 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 21:50:33,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:33,283 INFO L225 Difference]: With dead ends: 233 [2022-03-15 21:50:33,283 INFO L226 Difference]: Without dead ends: 223 [2022-03-15 21:50:33,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=481, Invalid=2069, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 21:50:33,284 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:33,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:33,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-03-15 21:50:33,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 142. [2022-03-15 21:50:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.25531914893617) internal successors, (318), 141 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 318 transitions. [2022-03-15 21:50:33,289 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 318 transitions. Word has length 18 [2022-03-15 21:50:33,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:33,289 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 318 transitions. [2022-03-15 21:50:33,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 318 transitions. [2022-03-15 21:50:33,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 21:50:33,290 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:33,290 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:33,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:33,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:33,504 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:33,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:33,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1400189978, now seen corresponding path program 18 times [2022-03-15 21:50:33,505 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:33,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507628592] [2022-03-15 21:50:33,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:33,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:33,653 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:33,653 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507628592] [2022-03-15 21:50:33,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507628592] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:33,653 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969200963] [2022-03-15 21:50:33,653 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 21:50:33,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:33,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:33,654 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) [2022-03-15 21:50:33,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 21:50:33,673 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 21:50:33,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:33,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 21:50:33,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:33,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:34,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969200963] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:34,489 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:34,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 29 [2022-03-15 21:50:34,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1304815216] [2022-03-15 21:50:34,489 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:34,490 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:34,491 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 34 transitions. [2022-03-15 21:50:34,491 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:34,748 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [7221#(and (or (<= (+ T S) (+ m s)) (< 0 t)) (or (<= (+ m 1) (+ T S)) (< 0 t))), 7223#(and (or (<= (+ T S) (+ m t s)) (< 0 t)) (or (<= (+ m 1) (+ T S)) (< 0 t))), 7224#(and (or (< 1 t) (<= (+ m 1) (+ T S))) (or (< 1 t) (<= (+ T S 1) (+ m t s)))), 7219#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 7220#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 7222#(and (<= (+ m t) (+ T S)) (<= (+ T S 1) (+ m t s)))] [2022-03-15 21:50:34,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 21:50:34,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:34,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 21:50:34,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1085, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 21:50:34,750 INFO L87 Difference]: Start difference. First operand 142 states and 318 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:35,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:35,064 INFO L93 Difference]: Finished difference Result 185 states and 405 transitions. [2022-03-15 21:50:35,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 21:50:35,065 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 21:50:35,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:35,065 INFO L225 Difference]: With dead ends: 185 [2022-03-15 21:50:35,065 INFO L226 Difference]: Without dead ends: 180 [2022-03-15 21:50:35,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=392, Invalid=1588, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 21:50:35,066 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:35,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:35,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-03-15 21:50:35,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 160. [2022-03-15 21:50:35,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 2.2767295597484276) internal successors, (362), 159 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:35,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 362 transitions. [2022-03-15 21:50:35,071 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 362 transitions. Word has length 18 [2022-03-15 21:50:35,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:35,071 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 362 transitions. [2022-03-15 21:50:35,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:35,071 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 362 transitions. [2022-03-15 21:50:35,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 21:50:35,072 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:35,072 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:35,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:35,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:35,287 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:35,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:35,288 INFO L85 PathProgramCache]: Analyzing trace with hash -292917846, now seen corresponding path program 19 times [2022-03-15 21:50:35,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:35,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564714202] [2022-03-15 21:50:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:35,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:35,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:35,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564714202] [2022-03-15 21:50:35,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564714202] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:35,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537117302] [2022-03-15 21:50:35,481 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 21:50:35,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:35,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:35,482 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) [2022-03-15 21:50:35,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 21:50:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:35,505 WARN L261 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 21:50:35,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:35,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:36,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537117302] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:36,440 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:36,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 32 [2022-03-15 21:50:36,441 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [933447386] [2022-03-15 21:50:36,441 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:36,441 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:36,443 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 36 transitions. [2022-03-15 21:50:36,443 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:36,761 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [7882#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 7886#(and (or (<= (+ 2 m) (+ T S)) (< 0 t)) (or (<= (+ T S) (+ m t s)) (< 0 t))), 7884#(and (or (<= (+ T S) (+ m s)) (< 0 t)) (or (<= (+ m 1) (+ T S)) (< 0 t))), 7883#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 7885#(and (or (<= (+ T S) (+ m t s)) (< 0 t)) (or (<= (+ m 1) (+ T S)) (< 0 t))), 7887#(and (or (< 1 t) (<= (+ T S 1) (+ m t s))) (or (<= (+ 2 m) (+ T S)) (< 1 t)))] [2022-03-15 21:50:36,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 21:50:36,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:36,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 21:50:36,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1255, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 21:50:36,762 INFO L87 Difference]: Start difference. First operand 160 states and 362 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:37,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:37,045 INFO L93 Difference]: Finished difference Result 200 states and 440 transitions. [2022-03-15 21:50:37,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 21:50:37,045 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 21:50:37,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:37,046 INFO L225 Difference]: With dead ends: 200 [2022-03-15 21:50:37,046 INFO L226 Difference]: Without dead ends: 195 [2022-03-15 21:50:37,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=1746, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 21:50:37,048 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:37,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:37,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-03-15 21:50:37,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 170. [2022-03-15 21:50:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.2840236686390534) internal successors, (386), 169 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:37,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 386 transitions. [2022-03-15 21:50:37,052 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 386 transitions. Word has length 18 [2022-03-15 21:50:37,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:37,053 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 386 transitions. [2022-03-15 21:50:37,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:37,053 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 386 transitions. [2022-03-15 21:50:37,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 21:50:37,053 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:37,053 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:37,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-03-15 21:50:37,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:37,255 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:37,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:37,256 INFO L85 PathProgramCache]: Analyzing trace with hash 726803354, now seen corresponding path program 20 times [2022-03-15 21:50:37,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:37,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416563320] [2022-03-15 21:50:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:37,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:37,410 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:37,410 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416563320] [2022-03-15 21:50:37,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416563320] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:37,410 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973088889] [2022-03-15 21:50:37,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 21:50:37,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:37,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:37,411 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) [2022-03-15 21:50:37,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 21:50:37,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 21:50:37,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:37,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 21:50:37,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:37,701 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:37,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:38,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973088889] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:38,218 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:38,218 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 27 [2022-03-15 21:50:38,218 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2038853421] [2022-03-15 21:50:38,218 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:38,219 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:38,220 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 30 transitions. [2022-03-15 21:50:38,220 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:38,390 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [8573#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 8574#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 8575#(and (or (< 1 t) (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s))) (or (<= m (+ T S)) (< 1 t))), 8576#(and (or (<= (+ m t 1) (+ T S)) (not (< 0 s))) (<= (+ m t) (+ T S)) (<= (+ T S) (+ m t s)))] [2022-03-15 21:50:38,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 21:50:38,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:38,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 21:50:38,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 21:50:38,392 INFO L87 Difference]: Start difference. First operand 170 states and 386 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:38,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:38,807 INFO L93 Difference]: Finished difference Result 296 states and 653 transitions. [2022-03-15 21:50:38,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 21:50:38,808 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 21:50:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:38,809 INFO L225 Difference]: With dead ends: 296 [2022-03-15 21:50:38,809 INFO L226 Difference]: Without dead ends: 286 [2022-03-15 21:50:38,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=393, Invalid=1677, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 21:50:38,810 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:38,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-03-15 21:50:38,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 188. [2022-03-15 21:50:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.299465240641711) internal successors, (430), 187 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:38,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 430 transitions. [2022-03-15 21:50:38,816 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 430 transitions. Word has length 18 [2022-03-15 21:50:38,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:38,816 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 430 transitions. [2022-03-15 21:50:38,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:38,817 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 430 transitions. [2022-03-15 21:50:38,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:50:38,817 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:38,817 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:38,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:39,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:39,031 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:39,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:39,032 INFO L85 PathProgramCache]: Analyzing trace with hash -838574944, now seen corresponding path program 21 times [2022-03-15 21:50:39,033 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:39,033 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078344020] [2022-03-15 21:50:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:39,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:39,214 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:39,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078344020] [2022-03-15 21:50:39,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078344020] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:39,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129237590] [2022-03-15 21:50:39,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 21:50:39,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:39,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:39,215 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) [2022-03-15 21:50:39,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 21:50:39,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-15 21:50:39,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:39,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 21:50:39,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:39,832 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:39,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:40,501 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:40,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129237590] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:40,501 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:40,501 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2022-03-15 21:50:40,502 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [753845046] [2022-03-15 21:50:40,502 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:40,502 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:40,504 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 40 transitions. [2022-03-15 21:50:40,504 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:40,733 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [9422#(and (or (<= m (+ T S)) (< 0 t)) (or (not (<= (+ m 1) (+ T S))) (<= (+ T S) (+ m s)) (< 0 t))), 9421#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 9423#(and (or (< 1 t) (not (<= (+ m 1) (+ T S))) (<= (+ T S) (+ m s))) (or (<= m (+ T S)) (< 1 t))), 9420#(and (<= (+ T S 1) (+ m t s)) (<= (+ m t) (+ T S 1)))] [2022-03-15 21:50:40,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 21:50:40,734 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:40,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 21:50:40,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 21:50:40,734 INFO L87 Difference]: Start difference. First operand 188 states and 430 transitions. Second operand has 17 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:41,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:41,147 INFO L93 Difference]: Finished difference Result 276 states and 613 transitions. [2022-03-15 21:50:41,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 21:50:41,148 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-15 21:50:41,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:41,149 INFO L225 Difference]: With dead ends: 276 [2022-03-15 21:50:41,149 INFO L226 Difference]: Without dead ends: 271 [2022-03-15 21:50:41,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=405, Invalid=1757, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 21:50:41,150 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 63 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:41,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 0 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:41,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-03-15 21:50:41,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 198. [2022-03-15 21:50:41,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.2944162436548226) internal successors, (452), 197 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:41,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 452 transitions. [2022-03-15 21:50:41,156 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 452 transitions. Word has length 20 [2022-03-15 21:50:41,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:41,156 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 452 transitions. [2022-03-15 21:50:41,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:41,156 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 452 transitions. [2022-03-15 21:50:41,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:50:41,157 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:41,157 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:41,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:41,363 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,SelfDestructingSolverStorable22 [2022-03-15 21:50:41,363 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:41,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:41,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1941332124, now seen corresponding path program 22 times [2022-03-15 21:50:41,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:41,365 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210984250] [2022-03-15 21:50:41,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:41,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:41,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:41,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210984250] [2022-03-15 21:50:41,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210984250] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:41,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220317197] [2022-03-15 21:50:41,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 21:50:41,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:41,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:41,591 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) [2022-03-15 21:50:41,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 21:50:41,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 21:50:41,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:41,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 21:50:41,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:42,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:42,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220317197] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:42,955 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:42,955 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-03-15 21:50:42,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [873789441] [2022-03-15 21:50:42,955 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:42,956 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:42,958 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 42 transitions. [2022-03-15 21:50:42,958 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:43,306 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [10270#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 10271#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 10274#(and (or (< 1 t) (<= (+ T S 1) (+ m t s)) (<= s 0)) (or (< 1 t) (not (< 0 s)) (<= (+ m 1) (+ T S)))), 10272#(and (or (<= (+ T S) (+ m s)) (< 0 t)) (or (<= (+ m 1) (+ T S)) (< 0 t))), 10273#(and (or (<= (+ T S) (+ m t s)) (<= s 0) (< 0 t)) (or (not (< 0 s)) (<= (+ m 1) (+ T S)) (< 0 t)))] [2022-03-15 21:50:43,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 21:50:43,306 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:43,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 21:50:43,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1391, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 21:50:43,307 INFO L87 Difference]: Start difference. First operand 198 states and 452 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:44,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:44,041 INFO L93 Difference]: Finished difference Result 287 states and 646 transitions. [2022-03-15 21:50:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 21:50:44,041 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-15 21:50:44,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:44,043 INFO L225 Difference]: With dead ends: 287 [2022-03-15 21:50:44,043 INFO L226 Difference]: Without dead ends: 282 [2022-03-15 21:50:44,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 15 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=480, Invalid=2600, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 21:50:44,044 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 70 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:44,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 0 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 21:50:44,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-03-15 21:50:44,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 204. [2022-03-15 21:50:44,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 2.3054187192118225) internal successors, (468), 203 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 468 transitions. [2022-03-15 21:50:44,051 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 468 transitions. Word has length 20 [2022-03-15 21:50:44,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:44,051 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 468 transitions. [2022-03-15 21:50:44,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:44,051 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 468 transitions. [2022-03-15 21:50:44,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:50:44,052 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:44,052 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:44,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:44,252 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,SelfDestructingSolverStorable23 [2022-03-15 21:50:44,253 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:44,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:44,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1035550368, now seen corresponding path program 23 times [2022-03-15 21:50:44,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:44,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195702124] [2022-03-15 21:50:44,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:44,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:44,484 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:44,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195702124] [2022-03-15 21:50:44,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195702124] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:44,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338821566] [2022-03-15 21:50:44,484 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 21:50:44,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:44,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:44,485 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) [2022-03-15 21:50:44,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 21:50:44,508 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 21:50:44,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:44,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 21:50:44,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:45,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:45,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338821566] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:45,905 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:45,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-03-15 21:50:45,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [217835966] [2022-03-15 21:50:45,905 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:45,906 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:45,908 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2022-03-15 21:50:45,908 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:46,149 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [11146#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 11147#(and (or (<= (+ m t) (+ T S)) (<= s 0)) (<= (+ T S 1) (+ m t s)) (<= (+ m t) (+ T S 1))), 11149#(and (or (<= m (+ T S)) (< 1 t) (< 0 s)) (or (< 1 t) (< (+ T S) (+ m 1)) (< 0 s))), 11148#(and (or (< (+ T S) (+ m 1)) (< 0 s) (< 0 t)) (or (<= m (+ T S)) (< 0 s) (< 0 t)))] [2022-03-15 21:50:46,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 21:50:46,150 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:46,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 21:50:46,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1035, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 21:50:46,151 INFO L87 Difference]: Start difference. First operand 204 states and 468 transitions. Second operand has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:46,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:46,854 INFO L93 Difference]: Finished difference Result 434 states and 985 transitions. [2022-03-15 21:50:46,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 21:50:46,855 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have 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 [2022-03-15 21:50:46,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:46,856 INFO L225 Difference]: With dead ends: 434 [2022-03-15 21:50:46,857 INFO L226 Difference]: Without dead ends: 424 [2022-03-15 21:50:46,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=547, Invalid=2315, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 21:50:46,858 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 88 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:46,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 0 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:46,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-03-15 21:50:46,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 243. [2022-03-15 21:50:46,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 2.347107438016529) internal successors, (568), 242 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 568 transitions. [2022-03-15 21:50:46,877 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 568 transitions. Word has length 20 [2022-03-15 21:50:46,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:46,877 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 568 transitions. [2022-03-15 21:50:46,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:46,878 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 568 transitions. [2022-03-15 21:50:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:50:46,878 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:46,878 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:46,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:47,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:47,101 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:47,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:47,101 INFO L85 PathProgramCache]: Analyzing trace with hash -67206812, now seen corresponding path program 24 times [2022-03-15 21:50:47,102 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:47,102 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448711697] [2022-03-15 21:50:47,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:47,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:47,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:47,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448711697] [2022-03-15 21:50:47,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448711697] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:47,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646413130] [2022-03-15 21:50:47,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 21:50:47,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:47,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:47,350 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) [2022-03-15 21:50:47,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 21:50:47,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-15 21:50:47,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:47,369 WARN L261 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 21:50:47,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:47,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:48,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646413130] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:48,259 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:48,259 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2022-03-15 21:50:48,259 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1955701253] [2022-03-15 21:50:48,259 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:48,260 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:48,262 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 40 transitions. [2022-03-15 21:50:48,262 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:48,631 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [12258#(and (or (<= (+ T S) (+ m t s)) (<= s 0) (< 0 t)) (or (not (< 0 s)) (<= (+ m 1) (+ T S)) (< 0 t))), 12259#(and (or (< 1 t) (<= (+ T S 1) (+ m t s)) (<= s 0)) (or (< 1 t) (not (< 0 s)) (<= (+ m 1) (+ T S)))), 12256#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 12257#(and (or (<= (+ T S) (+ m s)) (< 0 t)) (or (<= (+ m 1) (+ T S)) (< 0 t))), 12254#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 12255#(and (or (<= (+ T S 1) (+ m t s)) (<= s 0)) (or (<= (+ m t) (+ T S)) (<= s 0)) (<= 0 s))] [2022-03-15 21:50:48,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 21:50:48,631 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:48,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 21:50:48,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1345, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 21:50:48,632 INFO L87 Difference]: Start difference. First operand 243 states and 568 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:49,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:49,651 INFO L93 Difference]: Finished difference Result 341 states and 778 transitions. [2022-03-15 21:50:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 21:50:49,652 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have 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 [2022-03-15 21:50:49,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:49,653 INFO L225 Difference]: With dead ends: 341 [2022-03-15 21:50:49,653 INFO L226 Difference]: Without dead ends: 336 [2022-03-15 21:50:49,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=584, Invalid=3076, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 21:50:49,654 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 116 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:49,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 0 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 21:50:49,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-03-15 21:50:49,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 258. [2022-03-15 21:50:49,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 2.3657587548638133) internal successors, (608), 257 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 608 transitions. [2022-03-15 21:50:49,661 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 608 transitions. Word has length 20 [2022-03-15 21:50:49,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:49,661 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 608 transitions. [2022-03-15 21:50:49,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:49,662 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 608 transitions. [2022-03-15 21:50:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:50:49,662 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:49,662 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:49,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:49,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:49,877 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:49,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:49,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1560544996, now seen corresponding path program 25 times [2022-03-15 21:50:49,878 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:49,878 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896571359] [2022-03-15 21:50:49,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:49,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:50,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:50,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896571359] [2022-03-15 21:50:50,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896571359] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:50,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18081008] [2022-03-15 21:50:50,135 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 21:50:50,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:50,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:50,137 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) [2022-03-15 21:50:50,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 21:50:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:50,155 WARN L261 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 21:50:50,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:50,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:51,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18081008] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:51,512 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:51,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-03-15 21:50:51,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1018577027] [2022-03-15 21:50:51,512 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:51,513 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:51,515 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2022-03-15 21:50:51,515 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:51,746 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [13307#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 13308#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 13306#(and (or (<= (+ m t) (+ T S)) (<= s 0)) (<= (+ T S 1) (+ m t s)) (<= (+ m t) (+ T S 1))), 13309#(and (or (< 1 t) (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s))) (or (<= m (+ T S)) (< 1 t)))] [2022-03-15 21:50:51,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 21:50:51,746 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:51,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 21:50:51,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1125, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 21:50:51,747 INFO L87 Difference]: Start difference. First operand 258 states and 608 transitions. Second operand has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:52,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:52,527 INFO L93 Difference]: Finished difference Result 454 states and 1045 transitions. [2022-03-15 21:50:52,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 21:50:52,528 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have 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 [2022-03-15 21:50:52,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:52,530 INFO L225 Difference]: With dead ends: 454 [2022-03-15 21:50:52,530 INFO L226 Difference]: Without dead ends: 449 [2022-03-15 21:50:52,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=472, Invalid=2390, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 21:50:52,531 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 66 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:52,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 0 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:52,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-03-15 21:50:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 267. [2022-03-15 21:50:52,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 2.3684210526315788) internal successors, (630), 266 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:52,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 630 transitions. [2022-03-15 21:50:52,538 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 630 transitions. Word has length 20 [2022-03-15 21:50:52,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:52,539 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 630 transitions. [2022-03-15 21:50:52,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:52,539 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 630 transitions. [2022-03-15 21:50:52,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:50:52,539 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:52,539 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:52,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:52,755 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,SelfDestructingSolverStorable26 [2022-03-15 21:50:52,755 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1040065320, now seen corresponding path program 26 times [2022-03-15 21:50:52,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:52,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639642718] [2022-03-15 21:50:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:52,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:52,999 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:53,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639642718] [2022-03-15 21:50:53,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639642718] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:53,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187221031] [2022-03-15 21:50:53,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 21:50:53,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:53,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:53,001 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) [2022-03-15 21:50:53,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 21:50:53,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 21:50:53,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:53,020 WARN L261 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 21:50:53,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:53,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:53,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187221031] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:53,956 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:53,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2022-03-15 21:50:53,956 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1570940141] [2022-03-15 21:50:53,956 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:53,957 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:53,958 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 42 transitions. [2022-03-15 21:50:53,958 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:54,401 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [14483#(and (or (<= (+ T S) (+ m s)) (< 0 t)) (or (<= (+ m 1) (+ T S)) (< 0 t))), 14485#(and (or (<= s 1) (<= (+ T S) (+ m t s)) (< 0 t)) (or (<= (+ 2 m) (+ T S)) (<= s 1) (< 0 t)) (or (< 0 s) (< 0 t))), 14481#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 14484#(and (or (<= (+ T S) (+ m t s)) (<= s 0) (< 0 t)) (or (not (< 0 s)) (<= (+ m 1) (+ T S)) (< 0 t))), 14487#(and (or (<= (+ 2 m) (+ T S)) (<= s 1) (< 1 t)) (or (<= s 1) (< 1 t) (<= (+ T S 1) (+ m t s)))), 14486#(and (or (<= s 1) (<= (+ T S) (+ m t s)) (< 0 t)) (or (<= (+ 2 m) (+ T S)) (<= s 1) (< 0 t))), 14482#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t)))] [2022-03-15 21:50:54,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 21:50:54,402 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:54,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 21:50:54,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1470, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 21:50:54,403 INFO L87 Difference]: Start difference. First operand 267 states and 630 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:55,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:55,398 INFO L93 Difference]: Finished difference Result 338 states and 780 transitions. [2022-03-15 21:50:55,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 21:50:55,398 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-15 21:50:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:55,399 INFO L225 Difference]: With dead ends: 338 [2022-03-15 21:50:55,399 INFO L226 Difference]: Without dead ends: 333 [2022-03-15 21:50:55,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 16 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=660, Invalid=3122, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 21:50:55,400 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 110 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:55,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 0 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 21:50:55,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-03-15 21:50:55,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 277. [2022-03-15 21:50:55,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 2.3840579710144927) internal successors, (658), 276 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:55,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 658 transitions. [2022-03-15 21:50:55,407 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 658 transitions. Word has length 20 [2022-03-15 21:50:55,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:55,407 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 658 transitions. [2022-03-15 21:50:55,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:55,407 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 658 transitions. [2022-03-15 21:50:55,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:50:55,408 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:55,408 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:55,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:55,630 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,SelfDestructingSolverStorable27 [2022-03-15 21:50:55,630 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:55,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:55,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1616149192, now seen corresponding path program 27 times [2022-03-15 21:50:55,631 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:55,631 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399821385] [2022-03-15 21:50:55,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:55,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:55,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:55,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399821385] [2022-03-15 21:50:55,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399821385] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:55,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121307140] [2022-03-15 21:50:55,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 21:50:55,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:55,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:55,851 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) [2022-03-15 21:50:55,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 21:50:55,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-15 21:50:55,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:55,871 WARN L261 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 21:50:55,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:56,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:56,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121307140] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:56,742 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:56,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2022-03-15 21:50:56,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [355230951] [2022-03-15 21:50:56,742 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:56,743 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:56,745 INFO L252 McrAutomatonBuilder]: Finished intersection with 30 states and 38 transitions. [2022-03-15 21:50:56,745 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:57,072 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [15568#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 15571#(and (or (<= (+ T S) (+ m s)) (< 0 t)) (or (<= (+ m 1) (+ T S)) (< 0 t))), 15572#(and (or (<= (+ 2 m) (+ T S)) (<= s 1)) (or (<= s 1) (<= (+ T S) (+ m t s)))), 15569#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 15570#(and (<= t 0) (or (<= (+ 2 m) (+ T S)) (<= s 1)) (or (<= s 1) (<= (+ T S) (+ m t s))))] [2022-03-15 21:50:57,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 21:50:57,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:57,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 21:50:57,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1262, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 21:50:57,073 INFO L87 Difference]: Start difference. First operand 277 states and 658 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:57,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:50:57,811 INFO L93 Difference]: Finished difference Result 335 states and 778 transitions. [2022-03-15 21:50:57,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 21:50:57,811 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-15 21:50:57,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:50:57,813 INFO L225 Difference]: With dead ends: 335 [2022-03-15 21:50:57,813 INFO L226 Difference]: Without dead ends: 330 [2022-03-15 21:50:57,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=534, Invalid=2772, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 21:50:57,814 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:50:57,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:50:57,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-03-15 21:50:57,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 278. [2022-03-15 21:50:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 2.3826714801444044) internal successors, (660), 277 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 660 transitions. [2022-03-15 21:50:57,821 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 660 transitions. Word has length 20 [2022-03-15 21:50:57,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:50:57,821 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 660 transitions. [2022-03-15 21:50:57,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:50:57,821 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 660 transitions. [2022-03-15 21:50:57,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:50:57,822 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:50:57,822 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:50:57,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-15 21:50:58,035 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,SelfDestructingSolverStorable28 [2022-03-15 21:50:58,035 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:50:58,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:50:58,036 INFO L85 PathProgramCache]: Analyzing trace with hash -725758424, now seen corresponding path program 28 times [2022-03-15 21:50:58,037 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:50:58,037 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629949352] [2022-03-15 21:50:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:50:58,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:50:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:50:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:58,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:50:58,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629949352] [2022-03-15 21:50:58,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629949352] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:50:58,276 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847102599] [2022-03-15 21:50:58,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 21:50:58,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:50:58,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:50:58,277 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) [2022-03-15 21:50:58,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-15 21:50:58,295 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 21:50:58,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:50:58,296 WARN L261 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 21:50:58,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:50:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:58,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:50:59,658 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:50:59,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847102599] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:50:59,658 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:50:59,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-03-15 21:50:59,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [730538046] [2022-03-15 21:50:59,658 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:50:59,659 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:50:59,660 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions. [2022-03-15 21:50:59,660 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:50:59,842 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [16649#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 16650#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 16651#(and (or (< 1 t) (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s))) (or (<= m (+ T S)) (< 1 t)))] [2022-03-15 21:50:59,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 21:50:59,843 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:50:59,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 21:50:59,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1043, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 21:50:59,843 INFO L87 Difference]: Start difference. First operand 278 states and 660 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:00,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:51:00,325 INFO L93 Difference]: Finished difference Result 361 states and 833 transitions. [2022-03-15 21:51:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 21:51:00,325 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-15 21:51:00,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:51:00,326 INFO L225 Difference]: With dead ends: 361 [2022-03-15 21:51:00,327 INFO L226 Difference]: Without dead ends: 356 [2022-03-15 21:51:00,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=377, Invalid=1785, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 21:51:00,327 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:51:00,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:51:00,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-03-15 21:51:00,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 275. [2022-03-15 21:51:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 2.386861313868613) internal successors, (654), 274 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 654 transitions. [2022-03-15 21:51:00,335 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 654 transitions. Word has length 20 [2022-03-15 21:51:00,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:51:00,335 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 654 transitions. [2022-03-15 21:51:00,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 654 transitions. [2022-03-15 21:51:00,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:51:00,336 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:51:00,336 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:51:00,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-15 21:51:00,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:51:00,558 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:51:00,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:51:00,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2059786520, now seen corresponding path program 29 times [2022-03-15 21:51:00,558 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:51:00,558 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796762714] [2022-03-15 21:51:00,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:51:00,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:51:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:51:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:00,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:51:00,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796762714] [2022-03-15 21:51:00,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796762714] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:51:00,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119604462] [2022-03-15 21:51:00,766 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 21:51:00,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:51:00,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:51:00,767 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) [2022-03-15 21:51:00,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-15 21:51:00,786 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 21:51:00,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:51:00,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 21:51:00,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:51:01,317 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:01,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:51:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:02,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119604462] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:51:02,079 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:51:02,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-03-15 21:51:02,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1991119517] [2022-03-15 21:51:02,080 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:51:02,081 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:51:02,082 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2022-03-15 21:51:02,082 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:51:02,304 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [17733#(and (or (< (+ T S) (+ m 1)) (< 0 s) (< 0 t)) (or (<= m (+ T S)) (< 0 s) (< 0 t))), 17731#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 17732#(and (or (<= (+ m t 1) (+ T S)) (not (< 0 s))) (<= (+ m t) (+ T S)) (<= (+ T S) (+ m t s))), 17734#(and (or (<= m (+ T S)) (< 1 t) (< 0 s)) (or (< 1 t) (< (+ T S) (+ m 1)) (< 0 s)))] [2022-03-15 21:51:02,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 21:51:02,304 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:51:02,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 21:51:02,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1046, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 21:51:02,305 INFO L87 Difference]: Start difference. First operand 275 states and 654 transitions. Second operand has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:02,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:51:02,900 INFO L93 Difference]: Finished difference Result 437 states and 1014 transitions. [2022-03-15 21:51:02,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 21:51:02,901 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have 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 [2022-03-15 21:51:02,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:51:02,902 INFO L225 Difference]: With dead ends: 437 [2022-03-15 21:51:02,902 INFO L226 Difference]: Without dead ends: 427 [2022-03-15 21:51:02,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 21:51:02,903 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 83 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:51:02,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 0 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:51:02,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-03-15 21:51:02,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 293. [2022-03-15 21:51:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 2.3904109589041096) internal successors, (698), 292 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 698 transitions. [2022-03-15 21:51:02,911 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 698 transitions. Word has length 20 [2022-03-15 21:51:02,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:51:02,911 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 698 transitions. [2022-03-15 21:51:02,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:02,911 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 698 transitions. [2022-03-15 21:51:02,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:51:02,912 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:51:02,912 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:51:02,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-15 21:51:03,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:51:03,133 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:51:03,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:51:03,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1816289120, now seen corresponding path program 30 times [2022-03-15 21:51:03,134 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:51:03,134 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137570882] [2022-03-15 21:51:03,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:51:03,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:51:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:51:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:03,310 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:51:03,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137570882] [2022-03-15 21:51:03,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137570882] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:51:03,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992962356] [2022-03-15 21:51:03,310 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 21:51:03,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:51:03,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:51:03,311 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) [2022-03-15 21:51:03,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-15 21:51:03,330 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-15 21:51:03,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:51:03,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 21:51:03,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:51:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:03,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:51:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:04,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992962356] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:51:04,649 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:51:04,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2022-03-15 21:51:04,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1613788143] [2022-03-15 21:51:04,649 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:51:04,650 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:51:04,651 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 32 transitions. [2022-03-15 21:51:04,652 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:51:04,818 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [18939#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 18941#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 18942#(and (or (< 1 t) (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s))) (or (<= m (+ T S)) (< 1 t))), 18940#(and (<= 1 s) (<= (+ m t s) (+ T S 1)) (<= (+ T S 1) (+ m t s)))] [2022-03-15 21:51:04,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 21:51:04,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:51:04,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 21:51:04,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=968, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 21:51:04,819 INFO L87 Difference]: Start difference. First operand 293 states and 698 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:05,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:51:05,225 INFO L93 Difference]: Finished difference Result 565 states and 1323 transitions. [2022-03-15 21:51:05,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 21:51:05,226 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 [2022-03-15 21:51:05,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:51:05,227 INFO L225 Difference]: With dead ends: 565 [2022-03-15 21:51:05,227 INFO L226 Difference]: Without dead ends: 555 [2022-03-15 21:51:05,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=433, Invalid=1823, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 21:51:05,228 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:51:05,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:51:05,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-03-15 21:51:05,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 414. [2022-03-15 21:51:05,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 2.4552058111380144) internal successors, (1014), 413 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:05,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1014 transitions. [2022-03-15 21:51:05,237 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1014 transitions. Word has length 20 [2022-03-15 21:51:05,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:51:05,237 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 1014 transitions. [2022-03-15 21:51:05,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:05,237 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1014 transitions. [2022-03-15 21:51:05,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:51:05,238 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:51:05,238 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:51:05,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-15 21:51:05,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:51:05,451 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:51:05,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:51:05,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1375920996, now seen corresponding path program 31 times [2022-03-15 21:51:05,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:51:05,453 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929866984] [2022-03-15 21:51:05,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:51:05,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:51:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:51:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:05,625 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:51:05,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929866984] [2022-03-15 21:51:05,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929866984] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:51:05,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727105282] [2022-03-15 21:51:05,625 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 21:51:05,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:51:05,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:51:05,626 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) [2022-03-15 21:51:05,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-15 21:51:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:51:05,646 WARN L261 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 21:51:05,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:51:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:06,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:51:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:06,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727105282] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:51:06,562 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:51:06,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-03-15 21:51:06,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1462893976] [2022-03-15 21:51:06,562 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:51:06,563 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:51:06,564 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2022-03-15 21:51:06,564 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:51:06,836 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [20517#(and (or (< 1 t) (<= (+ T S 1) (+ m t s))) (or (< 1 t) (<= (+ m s) (+ T S)))), 20514#(and (or (<= (+ m s) (+ T S)) (< 0 t)) (or (not (<= s 0)) (< 0 t)) (or (<= (+ T S) (+ m s)) (< 0 t))), 20515#(and (<= 1 s) (<= (+ m t s) (+ T S 1)) (<= (+ T S 1) (+ m t s))), 20516#(and (or (<= (+ m s) (+ T S)) (< 0 t)) (or (<= (+ T S) (+ m t s)) (< 0 t))), 20512#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 20513#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t)))] [2022-03-15 21:51:06,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 21:51:06,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:51:06,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 21:51:06,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1424, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 21:51:06,837 INFO L87 Difference]: Start difference. First operand 414 states and 1014 transitions. Second operand has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:07,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:51:07,258 INFO L93 Difference]: Finished difference Result 576 states and 1406 transitions. [2022-03-15 21:51:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 21:51:07,259 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-15 21:51:07,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:51:07,261 INFO L225 Difference]: With dead ends: 576 [2022-03-15 21:51:07,261 INFO L226 Difference]: Without dead ends: 555 [2022-03-15 21:51:07,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=535, Invalid=2435, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 21:51:07,262 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 74 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:51:07,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 0 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:51:07,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-03-15 21:51:07,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 439. [2022-03-15 21:51:07,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 2.2100456621004567) internal successors, (968), 438 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:07,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 968 transitions. [2022-03-15 21:51:07,270 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 968 transitions. Word has length 20 [2022-03-15 21:51:07,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:51:07,270 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 968 transitions. [2022-03-15 21:51:07,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:07,270 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 968 transitions. [2022-03-15 21:51:07,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:51:07,271 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:51:07,271 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:51:07,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-15 21:51:07,491 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,SelfDestructingSolverStorable32 [2022-03-15 21:51:07,491 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:51:07,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:51:07,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1291294492, now seen corresponding path program 32 times [2022-03-15 21:51:07,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:51:07,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395907602] [2022-03-15 21:51:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:51:07,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:51:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:51:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:07,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:51:07,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395907602] [2022-03-15 21:51:07,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395907602] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:51:07,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742386965] [2022-03-15 21:51:07,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 21:51:07,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:51:07,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:51:07,700 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) [2022-03-15 21:51:07,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-15 21:51:07,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 21:51:07,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:51:07,719 WARN L261 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 21:51:07,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:51:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:08,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:51:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:09,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742386965] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:51:09,088 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:51:09,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2022-03-15 21:51:09,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [298491078] [2022-03-15 21:51:09,088 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:51:09,089 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:51:09,091 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 32 transitions. [2022-03-15 21:51:09,091 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:51:09,261 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [22145#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 22146#(and (or (< 1 t) (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s))) (or (<= m (+ T S)) (< 1 t))), 22144#(and (<= 1 s) (<= (+ m t s) (+ T S 1)) (<= (+ T S 1) (+ m t s))), 22143#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t)))] [2022-03-15 21:51:09,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 21:51:09,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:51:09,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 21:51:09,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 21:51:09,262 INFO L87 Difference]: Start difference. First operand 439 states and 968 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:09,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:51:09,710 INFO L93 Difference]: Finished difference Result 525 states and 1138 transitions. [2022-03-15 21:51:09,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 21:51:09,710 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 [2022-03-15 21:51:09,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:51:09,712 INFO L225 Difference]: With dead ends: 525 [2022-03-15 21:51:09,712 INFO L226 Difference]: Without dead ends: 518 [2022-03-15 21:51:09,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=376, Invalid=1786, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 21:51:09,713 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:51:09,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:51:09,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-03-15 21:51:09,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 432. [2022-03-15 21:51:09,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 2.211136890951276) internal successors, (953), 431 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:09,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 953 transitions. [2022-03-15 21:51:09,721 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 953 transitions. Word has length 20 [2022-03-15 21:51:09,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:51:09,721 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 953 transitions. [2022-03-15 21:51:09,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:09,721 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 953 transitions. [2022-03-15 21:51:09,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:51:09,722 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:51:09,722 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:51:09,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-15 21:51:09,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:51:09,935 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:51:09,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:51:09,936 INFO L85 PathProgramCache]: Analyzing trace with hash 717369384, now seen corresponding path program 33 times [2022-03-15 21:51:09,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:51:09,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224579273] [2022-03-15 21:51:09,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:51:09,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:51:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:51:10,110 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:10,110 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:51:10,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224579273] [2022-03-15 21:51:10,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224579273] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:51:10,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878376456] [2022-03-15 21:51:10,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 21:51:10,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:51:10,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:51:10,112 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) [2022-03-15 21:51:10,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-15 21:51:10,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-15 21:51:10,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:51:10,131 WARN L261 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 21:51:10,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:51:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:10,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:51:11,571 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:11,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878376456] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:51:11,571 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:51:11,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2022-03-15 21:51:11,571 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [366068426] [2022-03-15 21:51:11,571 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:51:11,572 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:51:11,574 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 32 transitions. [2022-03-15 21:51:11,574 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:51:11,756 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [23708#(and (or (< 1 t) (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s))) (or (<= m (+ T S)) (< 1 t))), 23707#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 23706#(and (<= 1 s) (<= (+ m t s) (+ T S 1)) (<= (+ T S 1) (+ m t s))), 23705#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t)))] [2022-03-15 21:51:11,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 21:51:11,756 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:51:11,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 21:51:11,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=963, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 21:51:11,757 INFO L87 Difference]: Start difference. First operand 432 states and 953 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:12,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:51:12,121 INFO L93 Difference]: Finished difference Result 607 states and 1325 transitions. [2022-03-15 21:51:12,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 21:51:12,127 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 [2022-03-15 21:51:12,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:51:12,130 INFO L225 Difference]: With dead ends: 607 [2022-03-15 21:51:12,130 INFO L226 Difference]: Without dead ends: 589 [2022-03-15 21:51:12,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=421, Invalid=1741, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 21:51:12,130 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:51:12,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:51:12,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-03-15 21:51:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 444. [2022-03-15 21:51:12,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 2.200902934537246) internal successors, (975), 443 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:12,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 975 transitions. [2022-03-15 21:51:12,138 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 975 transitions. Word has length 20 [2022-03-15 21:51:12,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:51:12,138 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 975 transitions. [2022-03-15 21:51:12,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:12,138 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 975 transitions. [2022-03-15 21:51:12,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:51:12,139 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:51:12,139 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:51:12,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-15 21:51:12,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:51:12,361 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:51:12,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:51:12,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1072857832, now seen corresponding path program 34 times [2022-03-15 21:51:12,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:51:12,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21674568] [2022-03-15 21:51:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:51:12,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:51:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:51:12,548 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:12,548 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:51:12,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21674568] [2022-03-15 21:51:12,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21674568] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:51:12,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021872122] [2022-03-15 21:51:12,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 21:51:12,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:51:12,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:51:12,550 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) [2022-03-15 21:51:12,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-15 21:51:12,581 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 21:51:12,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:51:12,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 21:51:12,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:51:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:13,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:51:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:14,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021872122] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:51:14,013 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:51:14,013 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-03-15 21:51:14,013 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1145016451] [2022-03-15 21:51:14,013 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:51:14,014 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:51:14,015 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 32 transitions. [2022-03-15 21:51:14,015 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:51:14,171 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [25375#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 25377#(and (or (< 1 t) (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s))) (or (<= m (+ T S)) (< 1 t))), 25376#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t)))] [2022-03-15 21:51:14,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 21:51:14,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:51:14,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 21:51:14,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1050, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 21:51:14,172 INFO L87 Difference]: Start difference. First operand 444 states and 975 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:14,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:51:14,520 INFO L93 Difference]: Finished difference Result 632 states and 1353 transitions. [2022-03-15 21:51:14,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 21:51:14,520 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 [2022-03-15 21:51:14,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:51:14,522 INFO L225 Difference]: With dead ends: 632 [2022-03-15 21:51:14,522 INFO L226 Difference]: Without dead ends: 627 [2022-03-15 21:51:14,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=362, Invalid=1800, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 21:51:14,523 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:51:14,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:51:14,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-03-15 21:51:14,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 456. [2022-03-15 21:51:14,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 2.2) internal successors, (1001), 455 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:14,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1001 transitions. [2022-03-15 21:51:14,538 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1001 transitions. Word has length 20 [2022-03-15 21:51:14,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:51:14,538 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 1001 transitions. [2022-03-15 21:51:14,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:14,538 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1001 transitions. [2022-03-15 21:51:14,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:51:14,539 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:51:14,539 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:51:14,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-15 21:51:14,763 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,SelfDestructingSolverStorable35 [2022-03-15 21:51:14,763 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:51:14,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:51:14,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2119352284, now seen corresponding path program 35 times [2022-03-15 21:51:14,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:51:14,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199377896] [2022-03-15 21:51:14,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:51:14,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:51:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:51:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:14,931 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:51:14,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199377896] [2022-03-15 21:51:14,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199377896] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:51:14,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924755383] [2022-03-15 21:51:14,931 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 21:51:14,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:51:14,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:51:14,932 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) [2022-03-15 21:51:14,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-15 21:51:14,952 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 21:51:14,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:51:14,952 WARN L261 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 21:51:14,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:51:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:15,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:51:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:15,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924755383] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:51:15,872 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:51:15,872 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-03-15 21:51:15,872 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1392654671] [2022-03-15 21:51:15,872 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:51:15,873 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:51:15,874 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2022-03-15 21:51:15,874 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:51:16,137 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [27097#(and (or (<= (+ m s) (+ T S)) (< 0 t)) (or (<= (+ T S) (+ m t s)) (< 0 t))), 27095#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t))), 27094#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 27098#(and (or (< 1 t) (<= (+ T S 1) (+ m t s))) (or (< 1 t) (<= (+ m s) (+ T S)))), 27096#(and (or (<= (+ m s) (+ T S)) (< 0 t)) (or (not (<= s 0)) (< 0 t)) (or (<= (+ T S) (+ m s)) (< 0 t)))] [2022-03-15 21:51:16,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 21:51:16,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:51:16,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 21:51:16,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1362, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 21:51:16,138 INFO L87 Difference]: Start difference. First operand 456 states and 1001 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:16,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:51:16,584 INFO L93 Difference]: Finished difference Result 596 states and 1279 transitions. [2022-03-15 21:51:16,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 21:51:16,584 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-15 21:51:16,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:51:16,586 INFO L225 Difference]: With dead ends: 596 [2022-03-15 21:51:16,586 INFO L226 Difference]: Without dead ends: 585 [2022-03-15 21:51:16,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=504, Invalid=2358, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 21:51:16,586 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 68 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:51:16,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 0 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:51:16,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-03-15 21:51:16,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 456. [2022-03-15 21:51:16,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 2.195604395604396) internal successors, (999), 455 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:16,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 999 transitions. [2022-03-15 21:51:16,593 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 999 transitions. Word has length 20 [2022-03-15 21:51:16,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:51:16,593 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 999 transitions. [2022-03-15 21:51:16,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:16,593 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 999 transitions. [2022-03-15 21:51:16,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 21:51:16,594 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:51:16,594 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:51:16,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-15 21:51:16,797 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,SelfDestructingSolverStorable36 [2022-03-15 21:51:16,797 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:51:16,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:51:16,798 INFO L85 PathProgramCache]: Analyzing trace with hash -547863204, now seen corresponding path program 36 times [2022-03-15 21:51:16,799 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:51:16,799 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707151823] [2022-03-15 21:51:16,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:51:16,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:51:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:51:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:17,028 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:51:17,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707151823] [2022-03-15 21:51:17,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707151823] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:51:17,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121238661] [2022-03-15 21:51:17,028 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 21:51:17,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:51:17,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:51:17,029 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) [2022-03-15 21:51:17,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-15 21:51:17,048 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 21:51:17,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 21:51:17,049 WARN L261 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 21:51:17,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:51:17,458 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:17,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:51:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:18,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121238661] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:51:18,371 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:51:18,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2022-03-15 21:51:18,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1249168573] [2022-03-15 21:51:18,371 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:51:18,372 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:51:18,373 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 32 transitions. [2022-03-15 21:51:18,373 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:51:18,533 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [28780#(and (or (< 1 t) (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s))) (or (<= m (+ T S)) (< 1 t))), 28778#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 28779#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t)))] [2022-03-15 21:51:18,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 21:51:18,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:51:18,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 21:51:18,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 21:51:18,534 INFO L87 Difference]: Start difference. First operand 456 states and 999 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:19,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:51:19,023 INFO L93 Difference]: Finished difference Result 587 states and 1258 transitions. [2022-03-15 21:51:19,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 21:51:19,024 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 [2022-03-15 21:51:19,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:51:19,025 INFO L225 Difference]: With dead ends: 587 [2022-03-15 21:51:19,026 INFO L226 Difference]: Without dead ends: 580 [2022-03-15 21:51:19,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=362, Invalid=1708, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 21:51:19,026 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:51:19,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:51:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-03-15 21:51:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 458. [2022-03-15 21:51:19,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 2.1947483588621446) internal successors, (1003), 457 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:19,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 1003 transitions. [2022-03-15 21:51:19,035 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 1003 transitions. Word has length 20 [2022-03-15 21:51:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:51:19,035 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 1003 transitions. [2022-03-15 21:51:19,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 1003 transitions. [2022-03-15 21:51:19,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 21:51:19,036 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 21:51:19,036 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 21:51:19,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-03-15 21:51:19,251 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,SelfDestructingSolverStorable37 [2022-03-15 21:51:19,251 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 21:51:19,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 21:51:19,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1813937702, now seen corresponding path program 37 times [2022-03-15 21:51:19,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 21:51:19,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967026890] [2022-03-15 21:51:19,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 21:51:19,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 21:51:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:51:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 21:51:19,502 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 21:51:19,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967026890] [2022-03-15 21:51:19,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967026890] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 21:51:19,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299846237] [2022-03-15 21:51:19,503 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 21:51:19,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 21:51:19,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 21:51:19,504 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) [2022-03-15 21:51:19,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-15 21:51:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 21:51:19,524 WARN L261 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 21:51:19,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 21:51:20,090 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:20,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 21:51:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 21:51:21,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299846237] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 21:51:21,346 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 21:51:21,346 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 33 [2022-03-15 21:51:21,346 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [627261300] [2022-03-15 21:51:21,346 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 21:51:21,347 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 21:51:21,349 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 38 transitions. [2022-03-15 21:51:21,349 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 21:51:21,554 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [30469#(and (or (<= m (+ T S)) (< 0 t)) (or (< (+ T S) (+ m 1)) (< 0 t))), 30471#(and (or (< 1 t) (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s))) (or (<= m (+ T S)) (< 1 t))), 30472#(and (<= (+ m t s) (+ T S 1)) (<= 0 s) (<= (+ T S 1) (+ m t s))), 30470#(and (or (< (+ T S) (+ m 1)) (<= (+ T S) (+ m s)) (< 0 t)) (or (<= m (+ T S)) (< 0 t)))] [2022-03-15 21:51:21,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 21:51:21,555 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 21:51:21,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 21:51:21,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1243, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 21:51:21,556 INFO L87 Difference]: Start difference. First operand 458 states and 1003 transitions. Second operand has 17 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 21:51:21,911 INFO L93 Difference]: Finished difference Result 519 states and 1144 transitions. [2022-03-15 21:51:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 21:51:21,912 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 21:51:21,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 21:51:21,912 INFO L225 Difference]: With dead ends: 519 [2022-03-15 21:51:21,912 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 21:51:21,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=410, Invalid=1942, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 21:51:21,913 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 21:51:21,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 21:51:21,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 21:51:21,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 21:51:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 21:51:21,913 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2022-03-15 21:51:21,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 21:51:21,914 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 21:51:21,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 21:51:21,914 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 21:51:21,914 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 21:51:21,916 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-15 21:51:21,916 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 21:51:21,916 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 21:51:21,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-03-15 21:51:22,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-15 21:51:22,121 INFO L732 BasicCegarLoop]: Path program histogram: [37, 1, 1] [2022-03-15 21:51:22,123 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 21:51:22,123 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 21:51:22,125 INFO L202 PluginConnector]: Adding new model threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 09:51:22 BasicIcfg [2022-03-15 21:51:22,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 21:51:22,125 INFO L158 Benchmark]: Toolchain (without parser) took 77757.09ms. Allocated memory was 179.3MB in the beginning and 287.3MB in the end (delta: 108.0MB). Free memory was 139.0MB in the beginning and 180.8MB in the end (delta: -41.8MB). Peak memory consumption was 68.7MB. Max. memory is 8.0GB. [2022-03-15 21:51:22,125 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 179.3MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 21:51:22,126 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.37ms. Allocated memory is still 179.3MB. Free memory was 138.9MB in the beginning and 137.5MB in the end (delta: 1.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-15 21:51:22,126 INFO L158 Benchmark]: Boogie Preprocessor took 16.86ms. Allocated memory is still 179.3MB. Free memory was 137.4MB in the beginning and 136.4MB in the end (delta: 927.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 21:51:22,126 INFO L158 Benchmark]: RCFGBuilder took 182.58ms. Allocated memory is still 179.3MB. Free memory was 136.4MB in the beginning and 127.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-15 21:51:22,126 INFO L158 Benchmark]: TraceAbstraction took 77528.01ms. Allocated memory was 179.3MB in the beginning and 287.3MB in the end (delta: 108.0MB). Free memory was 126.9MB in the beginning and 180.8MB in the end (delta: -54.0MB). Peak memory consumption was 55.1MB. Max. memory is 8.0GB. [2022-03-15 21:51:22,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12ms. Allocated memory is still 179.3MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.37ms. Allocated memory is still 179.3MB. Free memory was 138.9MB in the beginning and 137.5MB in the end (delta: 1.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.86ms. Allocated memory is still 179.3MB. Free memory was 137.4MB in the beginning and 136.4MB in the end (delta: 927.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 182.58ms. Allocated memory is still 179.3MB. Free memory was 136.4MB in the beginning and 127.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 77528.01ms. Allocated memory was 179.3MB in the beginning and 287.3MB in the end (delta: 108.0MB). Free memory was 126.9MB in the beginning and 180.8MB in the end (delta: -54.0MB). Peak memory consumption was 55.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 29 PlacesBefore, 20 PlacesAfterwards, 24 TransitionsBefore, 15 TransitionsAfterwards, 58 CoEnabledTransitionPairs, 3 FixpointIterations, 7 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 125 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 80, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 29, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 80, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 29, unknown conditional: 0, unknown unconditional: 29] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 55]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 77.5s, OverallIterations: 39, TraceHistogramMax: 5, PathProgramHistogramMax: 37, EmptinessCheckTime: 0.0s, AutomataDifference: 15.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2035 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2035 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1185 mSDsCounter, 1631 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6884 IncrementalHoareTripleChecker+Invalid, 8515 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1631 mSolverCounterUnsat, 6 mSDtfsCounter, 6884 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2307 GetRequests, 665 SyntacticMatches, 132 SemanticMatches, 1510 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22635 ImplicationChecksByTransitivity, 31.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=458occurred in iteration=38, InterpolantAutomatonStates: 679, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 39 MinimizatonAttempts, 2585 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 43.0s InterpolantComputationTime, 1350 NumberOfCodeBlocks, 1350 NumberOfCodeBlocksAsserted, 152 NumberOfCheckSat, 1899 ConstructedInterpolants, 0 QuantifiedInterpolants, 55471 SizeOfPredicates, 71 NumberOfNonLiveVariables, 1494 ConjunctsInSsa, 698 ConjunctsInUnsatCore, 111 InterpolantComputations, 4 PerfectInterpolantSequences, 67/1683 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-15 21:51:22,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...