/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/test/easy1.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 22:25:14,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 22:25:14,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 22:25:14,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 22:25:14,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 22:25:14,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 22:25:14,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 22:25:14,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 22:25:14,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 22:25:14,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 22:25:14,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 22:25:14,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-03-15 22:25:14,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 22:25:14,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 22:25:14,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 22:25:14,521 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 22:25:14,545 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 22:25:14,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 22:25:14,546 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 22:25:14,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 22:25:14,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 22:25:14,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 22:25:14,547 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 22:25:14,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 22:25:14,547 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 22:25:14,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 22:25:14,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 22:25:14,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 22:25:14,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 22:25:14,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 22:25:14,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 22:25:14,548 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 22:25:14,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 22:25:14,549 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 22:25:14,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 22:25:14,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 22:25:14,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 22:25:14,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 22:25:14,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 22:25:14,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 22:25:14,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 22:25:14,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 22:25:14,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 22:25:14,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 22:25:14,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 22:25:14,550 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 22:25:14,550 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 22:25:14,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 22:25:14,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 22:25:14,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 22:25:14,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 22:25:14,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 22:25:14,729 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 22:25:14,730 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 22:25:14,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy1.wvr.bpl [2022-03-15 22:25:14,731 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy1.wvr.bpl' [2022-03-15 22:25:14,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 22:25:14,746 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 22:25:14,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 22:25:14,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 22:25:14,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 22:25:14,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:25:14" (1/1) ... [2022-03-15 22:25:14,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:25:14" (1/1) ... [2022-03-15 22:25:14,764 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 22:25:14,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 22:25:14,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 22:25:14,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 22:25:14,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 22:25:14,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:25:14" (1/1) ... [2022-03-15 22:25:14,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:25:14" (1/1) ... [2022-03-15 22:25:14,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:25:14" (1/1) ... [2022-03-15 22:25:14,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:25:14" (1/1) ... [2022-03-15 22:25:14,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:25:14" (1/1) ... [2022-03-15 22:25:14,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:25:14" (1/1) ... [2022-03-15 22:25:14,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:25:14" (1/1) ... [2022-03-15 22:25:14,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 22:25:14,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 22:25:14,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 22:25:14,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 22:25:14,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:25:14" (1/1) ... [2022-03-15 22:25:14,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 22:25:14,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:25:14,802 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 22:25:14,821 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 22:25:14,833 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 22:25:14,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 22:25:14,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 22:25:14,834 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 22:25:14,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 22:25:14,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 22:25:14,834 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 22:25:14,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 22:25:14,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 22:25:14,835 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 22:25:14,865 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 22:25:14,865 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 22:25:14,931 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 22:25:14,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 22:25:14,937 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 22:25:14,942 INFO L202 PluginConnector]: Adding new model easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 10:25:14 BoogieIcfgContainer [2022-03-15 22:25:14,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 22:25:14,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 22:25:14,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 22:25:14,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 22:25:14,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 10:25:14" (1/2) ... [2022-03-15 22:25:14,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c925c6 and model type easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 10:25:14, skipping insertion in model container [2022-03-15 22:25:14,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 10:25:14" (2/2) ... [2022-03-15 22:25:14,952 INFO L111 eAbstractionObserver]: Analyzing ICFG easy1.wvr.bpl [2022-03-15 22:25:14,955 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 22:25:14,955 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 22:25:14,955 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 22:25:14,955 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 22:25:14,993 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 22:25:15,028 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 22:25:15,034 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 22:25:15,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 22:25:15,042 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 22:25:15,051 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 19 transitions, 54 flow [2022-03-15 22:25:15,054 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 19 transitions, 54 flow [2022-03-15 22:25:15,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 54 flow [2022-03-15 22:25:15,090 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2022-03-15 22:25:15,090 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-03-15 22:25:15,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 15 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2022-03-15 22:25:15,094 INFO L116 LiptonReduction]: Number of co-enabled transitions 48 [2022-03-15 22:25:15,203 INFO L131 LiptonReduction]: Checked pairs total: 37 [2022-03-15 22:25:15,203 INFO L133 LiptonReduction]: Total number of compositions: 7 [2022-03-15 22:25:15,208 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 13 transitions, 42 flow [2022-03-15 22:25:15,215 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:15,216 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:15,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-15 22:25:15,219 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:15,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:15,220 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:15,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:15,223 INFO L85 PathProgramCache]: Analyzing trace with hash -902398322, now seen corresponding path program 1 times [2022-03-15 22:25:15,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:15,235 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548437711] [2022-03-15 22:25:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:15,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:15,347 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 22:25:15,347 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:15,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548437711] [2022-03-15 22:25:15,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548437711] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 22:25:15,348 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 22:25:15,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-03-15 22:25:15,349 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1963724855] [2022-03-15 22:25:15,350 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:15,352 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:15,359 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 14 transitions. [2022-03-15 22:25:15,359 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:15,415 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [54#(or (= (+ x1 (* (- 1) x2)) 0) (< x1 10000))] [2022-03-15 22:25:15,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 22:25:15,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:15,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 22:25:15,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 22:25:15,455 INFO L87 Difference]: Start difference. First operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 22:25:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:15,513 INFO L93 Difference]: Finished difference Result 29 states and 51 transitions. [2022-03-15 22:25:15,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 22:25:15,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 22:25:15,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:15,519 INFO L225 Difference]: With dead ends: 29 [2022-03-15 22:25:15,519 INFO L226 Difference]: Without dead ends: 26 [2022-03-15 22:25:15,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 2 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 22:25:15,522 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:15,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 22:25:15,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-03-15 22:25:15,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2022-03-15 22:25:15,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 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 22:25:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 32 transitions. [2022-03-15 22:25:15,541 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 32 transitions. Word has length 8 [2022-03-15 22:25:15,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:15,542 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 32 transitions. [2022-03-15 22:25:15,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 22:25:15,542 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 32 transitions. [2022-03-15 22:25:15,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-15 22:25:15,543 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:15,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:15,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 22:25:15,544 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:15,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:15,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2066208766, now seen corresponding path program 1 times [2022-03-15 22:25:15,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:15,548 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718200040] [2022-03-15 22:25:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:15,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:15,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:15,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718200040] [2022-03-15 22:25:15,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718200040] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 22:25:15,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469205518] [2022-03-15 22:25:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:15,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:25:15,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:25:15,589 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 22:25:15,608 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 22:25:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:15,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-15 22:25:15,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 22:25:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:15,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 22:25:15,738 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 22:25:15,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469205518] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 22:25:15,739 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 22:25:15,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2022-03-15 22:25:15,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [307969116] [2022-03-15 22:25:15,740 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:15,740 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:15,744 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2022-03-15 22:25:15,744 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:15,799 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [173#(< x1 10000), 174#(or (not (< x1 10000)) (< x1 9999))] [2022-03-15 22:25:15,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 22:25:15,800 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:15,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 22:25:15,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-15 22:25:15,800 INFO L87 Difference]: Start difference. First operand 18 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:15,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:15,898 INFO L93 Difference]: Finished difference Result 35 states and 57 transitions. [2022-03-15 22:25:15,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 22:25:15,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-03-15 22:25:15,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:15,899 INFO L225 Difference]: With dead ends: 35 [2022-03-15 22:25:15,900 INFO L226 Difference]: Without dead ends: 35 [2022-03-15 22:25:15,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-15 22:25:15,901 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 14 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:15,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 1 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 22:25:15,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-15 22:25:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2022-03-15 22:25:15,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:15,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 39 transitions. [2022-03-15 22:25:15,905 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 39 transitions. Word has length 9 [2022-03-15 22:25:15,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:15,907 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 39 transitions. [2022-03-15 22:25:15,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:15,907 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 39 transitions. [2022-03-15 22:25:15,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-15 22:25:15,908 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:15,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:15,939 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 22:25:16,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:25:16,127 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:16,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:16,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2090399058, now seen corresponding path program 1 times [2022-03-15 22:25:16,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:16,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978935579] [2022-03-15 22:25:16,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:16,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:16,150 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 22:25:16,151 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:16,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978935579] [2022-03-15 22:25:16,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978935579] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 22:25:16,151 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 22:25:16,151 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 22:25:16,151 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [113354815] [2022-03-15 22:25:16,152 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:16,152 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:16,153 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2022-03-15 22:25:16,154 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:16,176 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [260#(< x1 10000)] [2022-03-15 22:25:16,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 22:25:16,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:16,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 22:25:16,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 22:25:16,177 INFO L87 Difference]: Start difference. First operand 20 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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 22:25:16,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:16,230 INFO L93 Difference]: Finished difference Result 29 states and 46 transitions. [2022-03-15 22:25:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 22:25:16,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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 9 [2022-03-15 22:25:16,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:16,231 INFO L225 Difference]: With dead ends: 29 [2022-03-15 22:25:16,231 INFO L226 Difference]: Without dead ends: 26 [2022-03-15 22:25:16,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-15 22:25:16,232 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 9 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:16,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 22:25:16,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-03-15 22:25:16,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2022-03-15 22:25:16,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 22:25:16,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 36 transitions. [2022-03-15 22:25:16,236 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 36 transitions. Word has length 9 [2022-03-15 22:25:16,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:16,236 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 36 transitions. [2022-03-15 22:25:16,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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 22:25:16,236 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 36 transitions. [2022-03-15 22:25:16,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-03-15 22:25:16,236 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:16,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:16,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 22:25:16,237 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:16,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:16,237 INFO L85 PathProgramCache]: Analyzing trace with hash -372061726, now seen corresponding path program 1 times [2022-03-15 22:25:16,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:16,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548772792] [2022-03-15 22:25:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:16,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:16,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:16,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548772792] [2022-03-15 22:25:16,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548772792] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 22:25:16,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589142938] [2022-03-15 22:25:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:16,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:25:16,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:25:16,300 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 22:25:16,301 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 22:25:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:16,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 22:25:16,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 22:25:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:16,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 22:25:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:16,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589142938] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 22:25:16,433 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 22:25:16,433 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 5 [2022-03-15 22:25:16,433 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [316793489] [2022-03-15 22:25:16,434 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:16,434 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:16,436 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2022-03-15 22:25:16,436 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:16,659 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [397#(and (or (< x1 10000) (< x2 (+ x1 1))) (or (< x1 10000) (<= x1 x2))), 400#(or (< x2 (+ 2 x1)) (< x1 9999) (<= 10000 x1)), 398#(and (or (< x1 10000) (< x2 (+ x1 1))) (or (<= x1 x2) (<= x1 10000))), 399#(and (or (not (< x1 10000)) (< x1 9999) (<= (+ x1 1) x2)) (or (not (< x1 10000)) (< x2 (+ 2 x1)) (< x1 9999)))] [2022-03-15 22:25:16,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 22:25:16,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:16,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 22:25:16,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-03-15 22:25:16,660 INFO L87 Difference]: Start difference. First operand 20 states and 36 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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 22:25:16,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:16,915 INFO L93 Difference]: Finished difference Result 55 states and 106 transitions. [2022-03-15 22:25:16,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 22:25:16,915 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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 10 [2022-03-15 22:25:16,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:16,916 INFO L225 Difference]: With dead ends: 55 [2022-03-15 22:25:16,916 INFO L226 Difference]: Without dead ends: 52 [2022-03-15 22:25:16,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-03-15 22:25:16,917 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 68 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:16,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 1 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 22:25:16,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-03-15 22:25:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 27. [2022-03-15 22:25:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:16,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 57 transitions. [2022-03-15 22:25:16,921 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 57 transitions. Word has length 10 [2022-03-15 22:25:16,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:16,921 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 57 transitions. [2022-03-15 22:25:16,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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 22:25:16,921 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 57 transitions. [2022-03-15 22:25:16,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-03-15 22:25:16,922 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:16,922 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:16,938 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 22:25:17,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-15 22:25:17,139 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:17,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:17,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2029489564, now seen corresponding path program 2 times [2022-03-15 22:25:17,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:17,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863718584] [2022-03-15 22:25:17,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:17,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 22:25:17,156 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:17,156 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863718584] [2022-03-15 22:25:17,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863718584] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 22:25:17,156 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 22:25:17,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 22:25:17,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2137409] [2022-03-15 22:25:17,157 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:17,157 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:17,158 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 24 transitions. [2022-03-15 22:25:17,158 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:17,185 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [530#(< x2 10000)] [2022-03-15 22:25:17,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 22:25:17,186 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:17,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 22:25:17,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 22:25:17,186 INFO L87 Difference]: Start difference. First operand 27 states and 57 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:17,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:17,225 INFO L93 Difference]: Finished difference Result 39 states and 74 transitions. [2022-03-15 22:25:17,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 22:25:17,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-03-15 22:25:17,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:17,226 INFO L225 Difference]: With dead ends: 39 [2022-03-15 22:25:17,226 INFO L226 Difference]: Without dead ends: 38 [2022-03-15 22:25:17,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-15 22:25:17,227 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:17,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 22:25:17,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-03-15 22:25:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2022-03-15 22:25:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:17,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 56 transitions. [2022-03-15 22:25:17,230 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 56 transitions. Word has length 10 [2022-03-15 22:25:17,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:17,230 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 56 transitions. [2022-03-15 22:25:17,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:17,230 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 56 transitions. [2022-03-15 22:25:17,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-15 22:25:17,231 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:17,231 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:17,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 22:25:17,231 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:17,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:17,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1350964350, now seen corresponding path program 2 times [2022-03-15 22:25:17,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:17,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922795504] [2022-03-15 22:25:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:17,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:17,258 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:17,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922795504] [2022-03-15 22:25:17,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922795504] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 22:25:17,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808734080] [2022-03-15 22:25:17,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 22:25:17,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:25:17,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:25:17,259 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 22:25:17,260 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 22:25:17,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 22:25:17,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 22:25:17,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 22:25:17,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 22:25:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:17,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 22:25:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:17,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808734080] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 22:25:17,336 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 22:25:17,336 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-03-15 22:25:17,336 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [387163661] [2022-03-15 22:25:17,336 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:17,337 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:17,338 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2022-03-15 22:25:17,338 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:17,425 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [701#(or (< x1 9999) (<= 10000 x1) (<= 10000 x2)), 699#(or (not (< x1 10000)) (< x1 9999)), 698#(< x1 10000), 700#(or (< x1 10000) (<= 10000 x2))] [2022-03-15 22:25:17,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 22:25:17,426 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:17,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 22:25:17,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-15 22:25:17,426 INFO L87 Difference]: Start difference. First operand 27 states and 56 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 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 22:25:17,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:17,607 INFO L93 Difference]: Finished difference Result 60 states and 116 transitions. [2022-03-15 22:25:17,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 22:25:17,608 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 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 11 [2022-03-15 22:25:17,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:17,608 INFO L225 Difference]: With dead ends: 60 [2022-03-15 22:25:17,608 INFO L226 Difference]: Without dead ends: 53 [2022-03-15 22:25:17,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=402, Unknown=0, NotChecked=0, Total=600 [2022-03-15 22:25:17,609 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 42 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:17,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 1 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 22:25:17,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-03-15 22:25:17,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 37. [2022-03-15 22:25:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 36 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 79 transitions. [2022-03-15 22:25:17,613 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 79 transitions. Word has length 11 [2022-03-15 22:25:17,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:17,613 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 79 transitions. [2022-03-15 22:25:17,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 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 22:25:17,613 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 79 transitions. [2022-03-15 22:25:17,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-15 22:25:17,614 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:17,614 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:17,633 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 22:25:17,831 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 22:25:17,832 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:17,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:17,832 INFO L85 PathProgramCache]: Analyzing trace with hash -232471620, now seen corresponding path program 3 times [2022-03-15 22:25:17,833 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:17,833 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030518023] [2022-03-15 22:25:17,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:17,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:17,868 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:17,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030518023] [2022-03-15 22:25:17,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030518023] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 22:25:17,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732162157] [2022-03-15 22:25:17,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 22:25:17,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:25:17,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:25:17,884 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 22:25:17,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 22:25:17,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 22:25:17,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 22:25:17,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 22:25:17,908 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 22:25:17,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:17,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 22:25:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:17,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732162157] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 22:25:17,980 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 22:25:17,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 7 [2022-03-15 22:25:17,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [909301445] [2022-03-15 22:25:17,981 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:17,981 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:17,982 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2022-03-15 22:25:17,982 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:18,112 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [934#(or (not (< x2 10000)) (<= (+ x2 1) x1)), 931#(or (not (< x1 10000)) (< x1 9999)), 932#(or (<= 9999 x1) (< x1 9998)), 933#(or (not (< x2 10000)) (<= x2 9998)), 930#(< x1 10000)] [2022-03-15 22:25:18,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 22:25:18,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:18,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 22:25:18,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-15 22:25:18,113 INFO L87 Difference]: Start difference. First operand 37 states and 79 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 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 22:25:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:18,459 INFO L93 Difference]: Finished difference Result 104 states and 207 transitions. [2022-03-15 22:25:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 22:25:18,459 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 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 11 [2022-03-15 22:25:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:18,460 INFO L225 Difference]: With dead ends: 104 [2022-03-15 22:25:18,460 INFO L226 Difference]: Without dead ends: 104 [2022-03-15 22:25:18,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 22:25:18,461 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 63 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:18,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 1 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 22:25:18,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-03-15 22:25:18,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 54. [2022-03-15 22:25:18,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.509433962264151) internal successors, (133), 53 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 22:25:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 133 transitions. [2022-03-15 22:25:18,480 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 133 transitions. Word has length 11 [2022-03-15 22:25:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:18,480 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 133 transitions. [2022-03-15 22:25:18,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 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 22:25:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 133 transitions. [2022-03-15 22:25:18,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 22:25:18,481 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:18,481 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:18,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-15 22:25:18,695 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 22:25:18,696 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:18,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:18,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1453131022, now seen corresponding path program 4 times [2022-03-15 22:25:18,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:18,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561548506] [2022-03-15 22:25:18,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:18,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:18,774 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:18,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561548506] [2022-03-15 22:25:18,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561548506] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 22:25:18,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668957569] [2022-03-15 22:25:18,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 22:25:18,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:25:18,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:25:18,775 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 22:25:18,804 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 22:25:18,819 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 22:25:18,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 22:25:18,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 22:25:18,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 22:25:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:18,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 22:25:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:18,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668957569] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 22:25:18,915 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 22:25:18,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 3] total 8 [2022-03-15 22:25:18,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1314972646] [2022-03-15 22:25:18,915 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:18,915 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:18,916 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2022-03-15 22:25:18,916 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:19,215 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [1268#(or (not (< x1 10000)) (<= x2 x1) (< x1 9999)), 1270#(or (<= 9999 x1) (< x2 (+ 3 x1)) (< x1 9998)), 1264#(and (or (< x1 10000) (< x2 (+ x1 1))) (or (<= x1 x2) (<= x1 10000))), 1267#(or (< x2 (+ 2 x1)) (< x1 9999) (<= 10000 x1)), 1271#(or (<= 9999 x1) (<= x2 (+ x1 1)) (< x1 9998)), 1266#(and (or (not (< x1 10000)) (< x1 9999) (<= (+ x1 1) x2)) (or (not (< x1 10000)) (< x2 (+ 2 x1)) (< x1 9999))), 1263#(and (or (< x1 10000) (< x2 (+ x1 1))) (or (< x1 10000) (<= x1 x2))), 1269#(and (or (< x2 (+ 3 x1)) (< x1 9998) (not (< x1 9999))) (or (<= (+ 2 x1) x2) (< x1 9998) (not (< x1 9999)))), 1265#(and (or (<= (+ x2 1) x1) (< x1 10000)) (<= x1 10000))] [2022-03-15 22:25:19,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 22:25:19,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:19,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 22:25:19,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-03-15 22:25:19,216 INFO L87 Difference]: Start difference. First operand 54 states and 133 transitions. Second operand has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 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 22:25:20,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:20,166 INFO L93 Difference]: Finished difference Result 136 states and 291 transitions. [2022-03-15 22:25:20,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 22:25:20,167 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-03-15 22:25:20,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:20,167 INFO L225 Difference]: With dead ends: 136 [2022-03-15 22:25:20,167 INFO L226 Difference]: Without dead ends: 133 [2022-03-15 22:25:20,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=583, Invalid=1769, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 22:25:20,169 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 120 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:20,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 1 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 22:25:20,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-03-15 22:25:20,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 60. [2022-03-15 22:25:20,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.5762711864406778) internal successors, (152), 59 states have internal predecessors, (152), 0 states have call successors, (0), 0 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 22:25:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 152 transitions. [2022-03-15 22:25:20,173 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 152 transitions. Word has length 12 [2022-03-15 22:25:20,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:20,173 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 152 transitions. [2022-03-15 22:25:20,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 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 22:25:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 152 transitions. [2022-03-15 22:25:20,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 22:25:20,174 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:20,174 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:20,192 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 22:25:20,383 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 22:25:20,383 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:20,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:20,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2003184832, now seen corresponding path program 5 times [2022-03-15 22:25:20,385 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:20,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559951898] [2022-03-15 22:25:20,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:20,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:20,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:20,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:20,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559951898] [2022-03-15 22:25:20,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559951898] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 22:25:20,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334349] [2022-03-15 22:25:20,425 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 22:25:20,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:25:20,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:25:20,426 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 22:25:20,427 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 22:25:20,444 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 22:25:20,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 22:25:20,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 22:25:20,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 22:25:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 22:25:20,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 22:25:20,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 22:25:20,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334349] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 22:25:20,546 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 22:25:20,546 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-03-15 22:25:20,546 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [345874371] [2022-03-15 22:25:20,546 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:20,547 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:20,547 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 40 transitions. [2022-03-15 22:25:20,548 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:20,782 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [1663#(< x2 10000), 1665#(or (< x2 10000) (<= 10001 x1)), 1668#(or (<= 10000 x1) (< x2 9999) (<= 10000 x2)), 1664#(or (not (< x2 10000)) (< x2 9999)), 1667#(or (<= 10000 x1) (< x2 10000)), 1666#(or (not (< x2 10000)) (< x2 9999) (<= 10001 x1))] [2022-03-15 22:25:20,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 22:25:20,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:20,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 22:25:20,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-15 22:25:20,783 INFO L87 Difference]: Start difference. First operand 60 states and 152 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 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 22:25:20,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:20,963 INFO L93 Difference]: Finished difference Result 116 states and 267 transitions. [2022-03-15 22:25:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 22:25:20,963 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 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 12 [2022-03-15 22:25:20,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:20,964 INFO L225 Difference]: With dead ends: 116 [2022-03-15 22:25:20,964 INFO L226 Difference]: Without dead ends: 112 [2022-03-15 22:25:20,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2022-03-15 22:25:20,965 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 71 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:20,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 1 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 22:25:20,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-03-15 22:25:20,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 70. [2022-03-15 22:25:20,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.579710144927536) internal successors, (178), 69 states have internal predecessors, (178), 0 states have call successors, (0), 0 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 22:25:20,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 178 transitions. [2022-03-15 22:25:20,969 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 178 transitions. Word has length 12 [2022-03-15 22:25:20,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:20,969 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 178 transitions. [2022-03-15 22:25:20,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 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 22:25:20,969 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 178 transitions. [2022-03-15 22:25:20,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 22:25:20,970 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:20,970 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:20,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-15 22:25:21,187 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 22:25:21,188 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:21,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:21,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2097364690, now seen corresponding path program 6 times [2022-03-15 22:25:21,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:21,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372199947] [2022-03-15 22:25:21,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:21,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:21,236 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:21,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372199947] [2022-03-15 22:25:21,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372199947] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 22:25:21,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881866092] [2022-03-15 22:25:21,237 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 22:25:21,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:25:21,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:25:21,238 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 22:25:21,271 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 22:25:21,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 22:25:21,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 22:25:21,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 22:25:21,272 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 22:25:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:21,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 22:25:21,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:21,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881866092] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 22:25:21,342 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 22:25:21,342 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-03-15 22:25:21,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1315029604] [2022-03-15 22:25:21,343 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:21,344 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:21,345 INFO L252 McrAutomatonBuilder]: Finished intersection with 33 states and 51 transitions. [2022-03-15 22:25:21,345 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:21,538 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [2036#(< x1 10000), 2043#(or (<= 9999 x1) (< x1 9998) (<= 10000 x2)), 2040#(or (< x1 9999) (<= 10000 x1) (<= 10000 x2)), 2044#(or (<= 9999 x1) (<= 9999 x2) (< x1 9998)), 2037#(or (not (< x1 10000)) (< x1 9999)), 2042#(or (not (< x1 10000)) (< x1 9999) (<= 9999 x2)), 2039#(or (< x1 10000) (<= 10000 x2)), 2038#(or (<= 9999 x1) (< x1 9998)), 2041#(or (< x1 10000) (<= 9999 x2))] [2022-03-15 22:25:21,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 22:25:21,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:21,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 22:25:21,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-03-15 22:25:21,539 INFO L87 Difference]: Start difference. First operand 70 states and 178 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:22,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:22,002 INFO L93 Difference]: Finished difference Result 177 states and 424 transitions. [2022-03-15 22:25:22,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 22:25:22,002 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-03-15 22:25:22,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:22,003 INFO L225 Difference]: With dead ends: 177 [2022-03-15 22:25:22,003 INFO L226 Difference]: Without dead ends: 162 [2022-03-15 22:25:22,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=726, Invalid=1724, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 22:25:22,004 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 82 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:22,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 1 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 22:25:22,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-03-15 22:25:22,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 100. [2022-03-15 22:25:22,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.6363636363636362) internal successors, (261), 99 states have internal predecessors, (261), 0 states have call successors, (0), 0 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 22:25:22,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 261 transitions. [2022-03-15 22:25:22,009 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 261 transitions. Word has length 13 [2022-03-15 22:25:22,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:22,009 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 261 transitions. [2022-03-15 22:25:22,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:22,009 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 261 transitions. [2022-03-15 22:25:22,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 22:25:22,010 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:22,010 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:22,028 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 22:25:22,219 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 22:25:22,219 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:22,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:22,220 INFO L85 PathProgramCache]: Analyzing trace with hash -161727426, now seen corresponding path program 7 times [2022-03-15 22:25:22,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:22,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041157568] [2022-03-15 22:25:22,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:22,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:22,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:22,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041157568] [2022-03-15 22:25:22,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041157568] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 22:25:22,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632147071] [2022-03-15 22:25:22,245 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 22:25:22,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:25:22,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:25:22,250 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 22:25:22,251 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 22:25:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:22,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 22:25:22,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 22:25:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:22,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 22:25:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:22,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632147071] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 22:25:22,353 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 22:25:22,353 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7] total 10 [2022-03-15 22:25:22,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1433347628] [2022-03-15 22:25:22,353 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:22,354 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:22,355 INFO L252 McrAutomatonBuilder]: Finished intersection with 33 states and 51 transitions. [2022-03-15 22:25:22,355 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:22,568 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 10 new interpolants: [2569#(or (<= 9999 x1) (< x1 9998)), 2572#(or (<= (+ 2 x2) x1) (<= 9999 x2)), 2568#(or (not (< x1 10000)) (< x1 9999)), 2565#(or (not (< x2 10000)) (<= x2 9998)), 2570#(or (<= 9998 x1) (< x1 9997)), 2567#(< x1 10000), 2573#(or (not (< x2 10000)) (<= x2 x1)), 2574#(or (<= (+ x2 1) x1) (<= 9999 x2)), 2571#(or (not (< x2 10000)) (<= (+ x2 1) x1)), 2566#(or (<= 9999 x2) (<= x2 9997))] [2022-03-15 22:25:22,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 22:25:22,569 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:22,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 22:25:22,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-03-15 22:25:22,569 INFO L87 Difference]: Start difference. First operand 100 states and 261 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:23,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:23,620 INFO L93 Difference]: Finished difference Result 267 states and 613 transitions. [2022-03-15 22:25:23,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 22:25:23,621 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-03-15 22:25:23,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:23,622 INFO L225 Difference]: With dead ends: 267 [2022-03-15 22:25:23,622 INFO L226 Difference]: Without dead ends: 267 [2022-03-15 22:25:23,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=762, Invalid=2100, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 22:25:23,623 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 117 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:23,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 1 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 22:25:23,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-03-15 22:25:23,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 127. [2022-03-15 22:25:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 2.761904761904762) internal successors, (348), 126 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 22:25:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 348 transitions. [2022-03-15 22:25:23,634 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 348 transitions. Word has length 13 [2022-03-15 22:25:23,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:23,635 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 348 transitions. [2022-03-15 22:25:23,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:23,635 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 348 transitions. [2022-03-15 22:25:23,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 22:25:23,636 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:23,636 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:23,656 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 22:25:23,855 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 22:25:23,856 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:23,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:23,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1495288674, now seen corresponding path program 8 times [2022-03-15 22:25:23,857 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:23,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345451547] [2022-03-15 22:25:23,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:23,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:23,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:23,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345451547] [2022-03-15 22:25:23,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345451547] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 22:25:23,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753542341] [2022-03-15 22:25:23,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 22:25:23,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:25:23,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:25:23,938 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 22:25:23,939 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 22:25:23,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 22:25:23,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 22:25:23,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 22:25:23,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 22:25:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:24,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 22:25:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:24,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753542341] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 22:25:24,099 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 22:25:24,099 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-03-15 22:25:24,099 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1460814530] [2022-03-15 22:25:24,099 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:24,100 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:24,101 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 62 transitions. [2022-03-15 22:25:24,101 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:24,634 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 16 new interpolants: [3260#(or (< x2 (+ 2 x1)) (< x1 9999) (<= 10000 x1)), 3268#(or (<= 9998 x1) (<= x2 (+ x1 1)) (< x1 9997)), 3258#(and (or (< x1 10000) (<= (+ 2 x2) x1)) (<= x1 10000)), 3265#(or (<= 9998 x1) (< x1 9997) (<= x2 (+ 2 x1))), 3255#(and (or (< x2 (+ 3 x1)) (< x1 9998) (not (< x1 9999))) (or (<= (+ 2 x1) x2) (< x1 9998) (not (< x1 9999)))), 3267#(or (<= 9999 x1) (<= x2 x1) (< x1 9998)), 3263#(or (<= 9999 x1) (<= x2 (+ x1 1)) (< x1 9998)), 3256#(and (or (< x1 10000) (< x2 (+ x1 1))) (or (<= x1 x2) (<= x1 10000))), 3264#(or (< x1 9997) (not (< x1 9998)) (< x2 (+ x1 4))), 3254#(and (or (not (< x1 10000)) (< x1 9999) (<= (+ x1 1) x2)) (or (not (< x1 10000)) (< x2 (+ 2 x1)) (< x1 9999))), 3253#(and (or (< x1 10000) (< x2 (+ x1 1))) (or (< x1 10000) (<= x1 x2))), 3259#(and (or (< x1 9997) (not (< x1 9998)) (< x2 (+ x1 4))) (or (<= (+ 3 x1) x2) (< x1 9997) (not (< x1 9998)))), 3266#(or (<= (+ x2 1) x1) (not (< x1 10000)) (< x1 9999)), 3262#(or (<= 9999 x1) (< x2 (+ 3 x1)) (< x1 9998)), 3261#(or (not (< x1 10000)) (<= x2 x1) (< x1 9999)), 3257#(and (or (<= (+ x2 1) x1) (< x1 10000)) (<= x1 10000))] [2022-03-15 22:25:24,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 22:25:24,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:24,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 22:25:24,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2022-03-15 22:25:24,635 INFO L87 Difference]: Start difference. First operand 127 states and 348 transitions. Second operand has 26 states, 25 states have (on average 2.12) internal successors, (53), 25 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:26,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:26,700 INFO L93 Difference]: Finished difference Result 285 states and 671 transitions. [2022-03-15 22:25:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-15 22:25:26,701 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.12) internal successors, (53), 25 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-03-15 22:25:26,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:26,702 INFO L225 Difference]: With dead ends: 285 [2022-03-15 22:25:26,702 INFO L226 Difference]: Without dead ends: 282 [2022-03-15 22:25:26,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2568 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1531, Invalid=5609, Unknown=0, NotChecked=0, Total=7140 [2022-03-15 22:25:26,704 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 185 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:26,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 1 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 22:25:26,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-03-15 22:25:26,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 149. [2022-03-15 22:25:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.8445945945945947) internal successors, (421), 148 states have internal predecessors, (421), 0 states have call successors, (0), 0 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 22:25:26,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 421 transitions. [2022-03-15 22:25:26,716 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 421 transitions. Word has length 14 [2022-03-15 22:25:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:26,716 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 421 transitions. [2022-03-15 22:25:26,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.12) internal successors, (53), 25 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 421 transitions. [2022-03-15 22:25:26,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 22:25:26,722 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:26,722 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:26,740 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 22:25:26,937 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 22:25:26,938 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:26,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1870974620, now seen corresponding path program 9 times [2022-03-15 22:25:26,939 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:26,939 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277349407] [2022-03-15 22:25:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:26,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:26,975 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:26,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:26,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277349407] [2022-03-15 22:25:26,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277349407] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 22:25:26,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105695616] [2022-03-15 22:25:26,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 22:25:26,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:25:26,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:25:26,977 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 22:25:26,978 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 22:25:27,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 22:25:27,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 22:25:27,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 22:25:27,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 22:25:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-03-15 22:25:27,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 22:25:27,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105695616] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 22:25:27,089 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 22:25:27,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2022-03-15 22:25:27,089 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1940697295] [2022-03-15 22:25:27,089 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:27,090 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:27,091 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 60 transitions. [2022-03-15 22:25:27,091 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:27,361 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [4016#(and (< x2 10001) (or (<= 10000 x1) (< x2 10000)) (or (< x1 10001) (< x2 10000))), 4020#(and (or (not (< x2 9999)) (<= 10000 x1) (< x2 9998)) (or (< x1 10001) (not (< x2 9999)) (< x2 9998))), 4018#(and (or (not (< x2 10000)) (<= 10000 x1) (< x2 9999)) (or (not (< x2 10000)) (< x1 10001) (< x2 9999))), 4021#(or (< x1 10001) (<= 9999 x2) (< x2 9998)), 4019#(or (< x1 10001) (< x2 9999) (<= 10000 x2)), 4017#(and (< x2 10001) (or (< x1 10001) (< x2 10000)))] [2022-03-15 22:25:27,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 22:25:27,361 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:27,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 22:25:27,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-03-15 22:25:27,362 INFO L87 Difference]: Start difference. First operand 149 states and 421 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 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 22:25:27,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:27,538 INFO L93 Difference]: Finished difference Result 205 states and 558 transitions. [2022-03-15 22:25:27,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 22:25:27,539 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 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 14 [2022-03-15 22:25:27,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:27,540 INFO L225 Difference]: With dead ends: 205 [2022-03-15 22:25:27,540 INFO L226 Difference]: Without dead ends: 181 [2022-03-15 22:25:27,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2022-03-15 22:25:27,540 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 43 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:27,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 1 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 22:25:27,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-03-15 22:25:27,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 45. [2022-03-15 22:25:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 2.159090909090909) internal successors, (95), 44 states have internal predecessors, (95), 0 states have call successors, (0), 0 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 22:25:27,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 95 transitions. [2022-03-15 22:25:27,543 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 95 transitions. Word has length 14 [2022-03-15 22:25:27,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:27,543 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 95 transitions. [2022-03-15 22:25:27,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 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 22:25:27,543 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 95 transitions. [2022-03-15 22:25:27,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 22:25:27,543 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:27,543 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:27,562 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 22:25:27,755 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 22:25:27,756 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:27,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:27,756 INFO L85 PathProgramCache]: Analyzing trace with hash -890715394, now seen corresponding path program 10 times [2022-03-15 22:25:27,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:27,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471904333] [2022-03-15 22:25:27,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:27,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:27,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:27,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471904333] [2022-03-15 22:25:27,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471904333] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 22:25:27,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042643282] [2022-03-15 22:25:27,827 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 22:25:27,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:25:27,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:25:27,828 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 22:25:27,829 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 22:25:27,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 22:25:27,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 22:25:27,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 22:25:27,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 22:25:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:27,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 22:25:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:27,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042643282] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 22:25:27,929 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 22:25:27,929 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-15 22:25:27,929 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [275039050] [2022-03-15 22:25:27,929 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:27,931 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:27,946 INFO L252 McrAutomatonBuilder]: Finished intersection with 45 states and 73 transitions. [2022-03-15 22:25:27,946 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:28,315 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 16 new interpolants: [4439#(or (< x1 10000) (<= 9998 x2)), 4436#(or (<= 9999 x1) (< x1 9998) (<= 10000 x2)), 4433#(or (<= 9999 x1) (< x1 9998)), 4442#(or (<= 9998 x1) (< x1 9997) (<= 10000 x2)), 4431#(or (< x1 10000) (<= 9999 x2)), 4434#(or (<= 9998 x1) (< x1 9997)), 4437#(or (not (< x1 10000)) (< x1 9999) (<= 9999 x2)), 4430#(or (< x1 10000) (<= 10000 x2)), 4444#(or (<= 9998 x1) (<= 9998 x2) (< x1 9997)), 4443#(or (<= 9998 x1) (<= 9999 x2) (< x1 9997)), 4435#(or (< x1 9999) (<= 10000 x1) (<= 10000 x2)), 4441#(or (<= 9999 x1) (<= 9998 x2) (< x1 9998)), 4438#(or (<= 9999 x1) (<= 9999 x2) (< x1 9998)), 4429#(< x1 10000), 4432#(or (not (< x1 10000)) (< x1 9999)), 4440#(or (not (< x1 10000)) (< x1 9999) (<= 9998 x2))] [2022-03-15 22:25:28,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 22:25:28,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:28,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 22:25:28,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2022-03-15 22:25:28,316 INFO L87 Difference]: Start difference. First operand 45 states and 95 transitions. Second operand has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:29,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:29,299 INFO L93 Difference]: Finished difference Result 216 states and 431 transitions. [2022-03-15 22:25:29,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 22:25:29,300 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-15 22:25:29,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:29,300 INFO L225 Difference]: With dead ends: 216 [2022-03-15 22:25:29,300 INFO L226 Difference]: Without dead ends: 183 [2022-03-15 22:25:29,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2082 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2042, Invalid=5098, Unknown=0, NotChecked=0, Total=7140 [2022-03-15 22:25:29,302 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 97 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:29,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 22:25:29,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-03-15 22:25:29,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 65. [2022-03-15 22:25:29,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 2.125) internal successors, (136), 64 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 22:25:29,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 136 transitions. [2022-03-15 22:25:29,305 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 136 transitions. Word has length 15 [2022-03-15 22:25:29,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:29,305 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 136 transitions. [2022-03-15 22:25:29,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 25 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:29,305 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 136 transitions. [2022-03-15 22:25:29,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 22:25:29,305 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:29,305 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:29,332 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 22:25:29,505 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 22:25:29,506 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:29,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:29,506 INFO L85 PathProgramCache]: Analyzing trace with hash 334818190, now seen corresponding path program 11 times [2022-03-15 22:25:29,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:29,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886907910] [2022-03-15 22:25:29,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:29,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:29,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:29,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886907910] [2022-03-15 22:25:29,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886907910] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 22:25:29,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932215428] [2022-03-15 22:25:29,594 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 22:25:29,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:25:29,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:25:29,595 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 22:25:29,596 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 22:25:29,611 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 22:25:29,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 22:25:29,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 22:25:29,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 22:25:29,704 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 22:25:29,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 22:25:29,755 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 22:25:29,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932215428] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 22:25:29,755 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 22:25:29,755 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2022-03-15 22:25:29,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [609855152] [2022-03-15 22:25:29,756 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:29,756 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:29,757 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 86 transitions. [2022-03-15 22:25:29,757 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:30,554 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 25 new interpolants: [5018#(or (<= 9998 x1) (< x1 9997) (<= x2 (+ 2 x1))), 5007#(and (or (< x1 10000) (< x2 (+ x1 1))) (or (< x1 10000) (<= x1 x2))), 5016#(and (or (< x1 9997) (not (< x1 9998)) (< x2 (+ x1 4))) (or (<= (+ 3 x1) x2) (< x1 9997) (not (< x1 9998)))), 5023#(or (<= 9999 x1) (<= x2 x1) (< x1 9998)), 5014#(or (<= 9999 x1) (< x2 (+ 3 x1)) (< x1 9998)), 5031#(or (< x1 9996) (<= 9997 x1) (<= x2 (+ x1 1))), 5019#(and (or (< x1 10000) (<= (+ 2 x2) x1)) (<= x1 10000)), 5022#(or (not (< x1 10000)) (< x1 9999) (<= (+ 2 x2) x1)), 5025#(and (or (not (< x1 9997)) (< x1 9996) (< x2 (+ 5 x1))) (or (not (< x1 9997)) (< x1 9996) (<= (+ x1 4) x2))), 5015#(or (<= 9999 x1) (<= x2 (+ x1 1)) (< x1 9998)), 5010#(and (or (not (< x1 10000)) (< x1 9999) (<= (+ x1 1) x2)) (or (not (< x1 10000)) (< x2 (+ 2 x1)) (< x1 9999))), 5017#(or (< x1 9997) (not (< x1 9998)) (< x2 (+ x1 4))), 5028#(or (< x1 9996) (<= 9997 x1) (<= x2 (+ 2 x1))), 5020#(and (or (< x1 10000) (<= (+ 3 x2) x1)) (<= x1 10000)), 5029#(or (<= 9999 x1) (<= (+ x2 1) x1) (< x1 9998)), 5008#(and (or (< x1 10000) (< x2 (+ x1 1))) (or (<= x1 x2) (<= x1 10000))), 5013#(and (or (< x2 (+ 3 x1)) (< x1 9998) (not (< x1 9999))) (or (<= (+ 2 x1) x2) (< x1 9998) (not (< x1 9999)))), 5012#(or (not (< x1 10000)) (<= x2 x1) (< x1 9999)), 5021#(or (<= (+ x2 1) x1) (not (< x1 10000)) (< x1 9999)), 5030#(or (<= 9998 x1) (<= x2 x1) (< x1 9997)), 5024#(or (<= 9998 x1) (<= x2 (+ x1 1)) (< x1 9997)), 5027#(or (< x1 9996) (<= 9997 x1) (<= x2 (+ 3 x1))), 5009#(and (or (<= (+ x2 1) x1) (< x1 10000)) (<= x1 10000)), 5026#(or (< x1 9996) (<= 9997 x1) (< x2 (+ 5 x1))), 5011#(or (< x2 (+ 2 x1)) (< x1 9999) (<= 10000 x1))] [2022-03-15 22:25:30,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 22:25:30,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:30,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 22:25:30,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=1253, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 22:25:30,555 INFO L87 Difference]: Start difference. First operand 65 states and 136 transitions. Second operand has 37 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:32,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:32,875 INFO L93 Difference]: Finished difference Result 243 states and 540 transitions. [2022-03-15 22:25:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-15 22:25:32,875 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 22:25:32,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:32,876 INFO L225 Difference]: With dead ends: 243 [2022-03-15 22:25:32,876 INFO L226 Difference]: Without dead ends: 235 [2022-03-15 22:25:32,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3991 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2203, Invalid=8509, Unknown=0, NotChecked=0, Total=10712 [2022-03-15 22:25:32,880 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 235 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:32,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 1 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 22:25:32,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-03-15 22:25:32,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 79. [2022-03-15 22:25:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 2.1923076923076925) internal successors, (171), 78 states have internal predecessors, (171), 0 states have call successors, (0), 0 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 22:25:32,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 171 transitions. [2022-03-15 22:25:32,883 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 171 transitions. Word has length 16 [2022-03-15 22:25:32,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:32,883 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 171 transitions. [2022-03-15 22:25:32,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 171 transitions. [2022-03-15 22:25:32,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 22:25:32,884 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 22:25:32,884 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 22:25:32,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 22:25:33,086 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 22:25:33,086 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 22:25:33,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 22:25:33,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1789405266, now seen corresponding path program 12 times [2022-03-15 22:25:33,087 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 22:25:33,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661857822] [2022-03-15 22:25:33,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 22:25:33,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 22:25:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 22:25:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 22:25:33,146 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 22:25:33,146 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661857822] [2022-03-15 22:25:33,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661857822] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 22:25:33,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606039348] [2022-03-15 22:25:33,147 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 22:25:33,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 22:25:33,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 22:25:33,148 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 22:25:33,149 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 22:25:33,165 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 22:25:33,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 22:25:33,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 22:25:33,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 22:25:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-15 22:25:33,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 22:25:33,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606039348] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 22:25:33,234 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 22:25:33,234 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 16 [2022-03-15 22:25:33,234 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [500892222] [2022-03-15 22:25:33,235 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 22:25:33,235 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 22:25:33,238 INFO L252 McrAutomatonBuilder]: Finished intersection with 59 states and 99 transitions. [2022-03-15 22:25:33,238 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 22:25:33,564 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 10 new interpolants: [5626#(and (or (< x2 10001) (< x1 9997) (not (< x1 9998))) (or (< x1 9997) (not (< x1 9998)) (<= 10000 x2))), 5629#(or (< x2 10001) (not (< x1 10000)) (< x1 9999)), 5628#(and (or (< x2 10001) (< x1 10000)) (< x1 10001)), 5623#(and (or (< x2 10001) (< x1 10000)) (< x1 10001) (or (< x1 10000) (<= 10000 x2))), 5627#(and (or (< x2 10001) (not (< x1 9997)) (< x1 9996)) (or (not (< x1 9997)) (< x1 9996) (<= 10000 x2))), 5624#(and (or (not (< x1 10000)) (< x1 9999) (<= 10000 x2)) (or (< x2 10001) (not (< x1 10000)) (< x1 9999))), 5632#(or (< x2 10001) (< x1 9996) (<= 9997 x1)), 5625#(and (or (< x2 10001) (< x1 9998) (not (< x1 9999))) (or (< x1 9998) (not (< x1 9999)) (<= 10000 x2))), 5631#(or (<= 9998 x1) (< x2 10001) (< x1 9997)), 5630#(or (< x2 10001) (<= 9999 x1) (< x1 9998))] [2022-03-15 22:25:33,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 22:25:33,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 22:25:33,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 22:25:33,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2022-03-15 22:25:33,565 INFO L87 Difference]: Start difference. First operand 79 states and 171 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 22:25:33,807 INFO L93 Difference]: Finished difference Result 101 states and 223 transitions. [2022-03-15 22:25:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 22:25:33,807 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 22:25:33,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 22:25:33,808 INFO L225 Difference]: With dead ends: 101 [2022-03-15 22:25:33,808 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 22:25:33,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2022-03-15 22:25:33,809 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 54 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 22:25:33,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 1 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 22:25:33,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 22:25:33,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 22:25:33,810 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 22:25:33,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 22:25:33,810 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-03-15 22:25:33,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 22:25:33,810 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 22:25:33,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 22:25:33,810 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 22:25:33,810 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 22:25:33,823 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-15 22:25:33,824 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 22:25:33,824 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 22:25:33,840 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 22:25:34,024 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 22:25:34,026 INFO L732 BasicCegarLoop]: Path program histogram: [12, 2, 1, 1] [2022-03-15 22:25:34,027 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 22:25:34,027 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 22:25:34,029 INFO L202 PluginConnector]: Adding new model easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 10:25:34 BasicIcfg [2022-03-15 22:25:34,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 22:25:34,029 INFO L158 Benchmark]: Toolchain (without parser) took 19282.98ms. Allocated memory was 184.5MB in the beginning and 398.5MB in the end (delta: 213.9MB). Free memory was 143.4MB in the beginning and 286.0MB in the end (delta: -142.6MB). Peak memory consumption was 73.7MB. Max. memory is 8.0GB. [2022-03-15 22:25:34,029 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 144.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 22:25:34,029 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.46ms. Allocated memory is still 184.5MB. Free memory was 143.3MB in the beginning and 141.7MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-15 22:25:34,029 INFO L158 Benchmark]: Boogie Preprocessor took 10.28ms. Allocated memory is still 184.5MB. Free memory was 141.7MB in the beginning and 140.8MB in the end (delta: 904.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 22:25:34,030 INFO L158 Benchmark]: RCFGBuilder took 165.52ms. Allocated memory is still 184.5MB. Free memory was 140.8MB in the beginning and 132.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-15 22:25:34,030 INFO L158 Benchmark]: TraceAbstraction took 19084.03ms. Allocated memory was 184.5MB in the beginning and 398.5MB in the end (delta: 213.9MB). Free memory was 131.9MB in the beginning and 286.0MB in the end (delta: -154.1MB). Peak memory consumption was 61.1MB. Max. memory is 8.0GB. [2022-03-15 22:25:34,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 144.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.46ms. Allocated memory is still 184.5MB. Free memory was 143.3MB in the beginning and 141.7MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.28ms. Allocated memory is still 184.5MB. Free memory was 141.7MB in the beginning and 140.8MB in the end (delta: 904.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 165.52ms. Allocated memory is still 184.5MB. Free memory was 140.8MB in the beginning and 132.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 19084.03ms. Allocated memory was 184.5MB in the beginning and 398.5MB in the end (delta: 213.9MB). Free memory was 131.9MB in the beginning and 286.0MB in the end (delta: -154.1MB). Peak memory consumption was 61.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 24 PlacesBefore, 18 PlacesAfterwards, 19 TransitionsBefore, 13 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 37 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 37, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 23, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 37, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 23, unknown conditional: 0, unknown unconditional: 23] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 37]: 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, 28 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 19.0s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1226 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1226 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 572 mSDsCounter, 819 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2594 IncrementalHoareTripleChecker+Invalid, 3413 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 819 mSolverCounterUnsat, 16 mSDtfsCounter, 2594 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 989 GetRequests, 370 SyntacticMatches, 31 SemanticMatches, 588 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11711 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred in iteration=12, InterpolantAutomatonStates: 450, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 991 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 361 NumberOfCodeBlocks, 355 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 457 ConstructedInterpolants, 0 QuantifiedInterpolants, 2398 SizeOfPredicates, 4 NumberOfNonLiveVariables, 431 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 40 InterpolantComputations, 6 PerfectInterpolantSequences, 180/350 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 22:25:34,080 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...