/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 04:30:19,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 04:30:19,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 04:30:19,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 04:30:19,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 04:30:19,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 04:30:19,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 04:30:19,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 04:30:19,617 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 04:30:19,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 04:30:19,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 04:30:19,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 04:30:19,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 04:30:19,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 04:30:19,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 04:30:19,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 04:30:19,618 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 04:30:19,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 04:30:19,618 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 04:30:19,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 04:30:19,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 04:30:19,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 04:30:19,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 04:30:19,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 04:30:19,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 04:30:19,619 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 04:30:19,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 04:30:19,619 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 04:30:19,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 04:30:19,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 04:30:19,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 04:30:19,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 04:30:19,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 04:30:19,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 04:30:19,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 04:30:19,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 04:30:19,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 04:30:19,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 04:30:19,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 04:30:19,620 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 04:30:19,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 04:30:19,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 04:30:19,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 04:30:19,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 04:30:19,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 04:30:19,818 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 04:30:19,819 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 04:30:19,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x3.wvr.bpl [2022-01-18 04:30:19,820 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x3.wvr.bpl' [2022-01-18 04:30:19,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 04:30:19,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 04:30:19,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 04:30:19,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 04:30:19,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 04:30:19,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:30:19" (1/1) ... [2022-01-18 04:30:19,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:30:19" (1/1) ... [2022-01-18 04:30:19,859 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 04:30:19,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 04:30:19,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 04:30:19,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 04:30:19,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 04:30:19,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:30:19" (1/1) ... [2022-01-18 04:30:19,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:30:19" (1/1) ... [2022-01-18 04:30:19,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:30:19" (1/1) ... [2022-01-18 04:30:19,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:30:19" (1/1) ... [2022-01-18 04:30:19,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:30:19" (1/1) ... [2022-01-18 04:30:19,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:30:19" (1/1) ... [2022-01-18 04:30:19,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:30:19" (1/1) ... [2022-01-18 04:30:19,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 04:30:19,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 04:30:19,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 04:30:19,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 04:30:19,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:30:19" (1/1) ... [2022-01-18 04:30:19,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 04:30:19,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:19,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 04:30:19,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 04:30:19,926 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 04:30:19,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 04:30:19,926 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 04:30:19,927 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 04:30:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 04:30:19,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 04:30:19,927 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 04:30:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 04:30:19,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 04:30:19,927 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 04:30:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 04:30:19,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 04:30:19,928 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-01-18 04:30:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-18 04:30:19,929 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-18 04:30:19,930 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 04:30:19,964 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 04:30:19,965 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 04:30:20,049 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 04:30:20,053 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 04:30:20,054 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 04:30:20,055 INFO L202 PluginConnector]: Adding new model exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 04:30:20 BoogieIcfgContainer [2022-01-18 04:30:20,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 04:30:20,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 04:30:20,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 04:30:20,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 04:30:20,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:30:19" (1/2) ... [2022-01-18 04:30:20,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225fa7cf and model type exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 04:30:20, skipping insertion in model container [2022-01-18 04:30:20,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 04:30:20" (2/2) ... [2022-01-18 04:30:20,076 INFO L111 eAbstractionObserver]: Analyzing ICFG exp2x3.wvr.bpl [2022-01-18 04:30:20,079 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 04:30:20,079 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 04:30:20,080 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 04:30:20,080 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 04:30:20,125 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-18 04:30:20,159 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 04:30:20,163 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 04:30:20,164 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-18 04:30:20,170 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 33 transitions, 98 flow [2022-01-18 04:30:20,244 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 429 states, 428 states have (on average 3.8621495327102804) internal successors, (1653), 428 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:20,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 429 states, 428 states have (on average 3.8621495327102804) internal successors, (1653), 428 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:20,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 04:30:20,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:20,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:20,262 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:20,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:20,268 INFO L85 PathProgramCache]: Analyzing trace with hash 768516577, now seen corresponding path program 1 times [2022-01-18 04:30:20,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:20,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436962131] [2022-01-18 04:30:20,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:20,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:20,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:20,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436962131] [2022-01-18 04:30:20,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436962131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:30:20,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:30:20,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 04:30:20,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59033694] [2022-01-18 04:30:20,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:30:20,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 04:30:20,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:20,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 04:30:20,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 04:30:20,502 INFO L87 Difference]: Start difference. First operand has 429 states, 428 states have (on average 3.8621495327102804) internal successors, (1653), 428 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:20,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:20,583 INFO L93 Difference]: Finished difference Result 854 states and 3302 transitions. [2022-01-18 04:30:20,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 04:30:20,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 04:30:20,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:20,601 INFO L225 Difference]: With dead ends: 854 [2022-01-18 04:30:20,601 INFO L226 Difference]: Without dead ends: 823 [2022-01-18 04:30:20,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 04:30:20,605 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:20,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 12 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:20,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-01-18 04:30:20,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 558. [2022-01-18 04:30:20,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 557 states have (on average 3.8545780969479355) internal successors, (2147), 557 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:20,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 2147 transitions. [2022-01-18 04:30:20,693 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 2147 transitions. Word has length 19 [2022-01-18 04:30:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:20,693 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 2147 transitions. [2022-01-18 04:30:20,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:20,694 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 2147 transitions. [2022-01-18 04:30:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:30:20,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:20,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:20,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 04:30:20,696 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:20,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1817520191, now seen corresponding path program 1 times [2022-01-18 04:30:20,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:20,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535077454] [2022-01-18 04:30:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:20,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:20,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:20,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535077454] [2022-01-18 04:30:20,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535077454] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:20,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957414356] [2022-01-18 04:30:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:20,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:20,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:20,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:20,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 04:30:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:20,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-18 04:30:20,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:20,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:20,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957414356] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:20,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:20,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-01-18 04:30:20,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414896305] [2022-01-18 04:30:20,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:20,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 04:30:20,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:20,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 04:30:20,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-18 04:30:20,901 INFO L87 Difference]: Start difference. First operand 558 states and 2147 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:20,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:20,979 INFO L93 Difference]: Finished difference Result 1354 states and 5079 transitions. [2022-01-18 04:30:20,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 04:30:20,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 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 21 [2022-01-18 04:30:20,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:20,986 INFO L225 Difference]: With dead ends: 1354 [2022-01-18 04:30:20,987 INFO L226 Difference]: Without dead ends: 1354 [2022-01-18 04:30:20,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:30:20,988 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 108 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:20,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 54 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:20,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2022-01-18 04:30:21,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 687. [2022-01-18 04:30:21,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 3.956268221574344) internal successors, (2714), 686 states have internal predecessors, (2714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 2714 transitions. [2022-01-18 04:30:21,031 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 2714 transitions. Word has length 21 [2022-01-18 04:30:21,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:21,031 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 2714 transitions. [2022-01-18 04:30:21,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:21,032 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 2714 transitions. [2022-01-18 04:30:21,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:30:21,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:21,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:21,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:21,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:21,243 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:21,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:21,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1420211201, now seen corresponding path program 1 times [2022-01-18 04:30:21,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:21,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109012242] [2022-01-18 04:30:21,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:21,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:21,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:21,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:21,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109012242] [2022-01-18 04:30:21,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109012242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:30:21,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:30:21,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 04:30:21,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331179512] [2022-01-18 04:30:21,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:30:21,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 04:30:21,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:21,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 04:30:21,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 04:30:21,285 INFO L87 Difference]: Start difference. First operand 687 states and 2714 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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) [2022-01-18 04:30:21,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:21,326 INFO L93 Difference]: Finished difference Result 973 states and 3608 transitions. [2022-01-18 04:30:21,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 04:30:21,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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 21 [2022-01-18 04:30:21,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:21,332 INFO L225 Difference]: With dead ends: 973 [2022-01-18 04:30:21,332 INFO L226 Difference]: Without dead ends: 953 [2022-01-18 04:30:21,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 04:30:21,336 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:21,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 31 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:30:21,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2022-01-18 04:30:21,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 775. [2022-01-18 04:30:21,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 3.8359173126614987) internal successors, (2969), 774 states have internal predecessors, (2969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:21,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2969 transitions. [2022-01-18 04:30:21,361 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2969 transitions. Word has length 21 [2022-01-18 04:30:21,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:21,361 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 2969 transitions. [2022-01-18 04:30:21,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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) [2022-01-18 04:30:21,361 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2969 transitions. [2022-01-18 04:30:21,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:30:21,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:21,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:21,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 04:30:21,365 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:21,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:21,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1433190623, now seen corresponding path program 1 times [2022-01-18 04:30:21,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:21,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815235903] [2022-01-18 04:30:21,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:21,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:21,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:21,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815235903] [2022-01-18 04:30:21,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815235903] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:21,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580877949] [2022-01-18 04:30:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:21,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:21,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:21,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:21,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 04:30:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:21,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-18 04:30:21,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:21,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:21,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580877949] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:21,542 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:21,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-01-18 04:30:21,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495830067] [2022-01-18 04:30:21,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:21,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 04:30:21,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:21,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 04:30:21,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-18 04:30:21,546 INFO L87 Difference]: Start difference. First operand 775 states and 2969 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:21,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:21,628 INFO L93 Difference]: Finished difference Result 1814 states and 6830 transitions. [2022-01-18 04:30:21,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 04:30:21,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 04:30:21,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:21,638 INFO L225 Difference]: With dead ends: 1814 [2022-01-18 04:30:21,638 INFO L226 Difference]: Without dead ends: 1814 [2022-01-18 04:30:21,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:30:21,641 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 76 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:21,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 61 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:21,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2022-01-18 04:30:21,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 990. [2022-01-18 04:30:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 989 states have (on average 3.969666329625885) internal successors, (3926), 989 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:21,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 3926 transitions. [2022-01-18 04:30:21,678 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 3926 transitions. Word has length 21 [2022-01-18 04:30:21,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:21,678 INFO L470 AbstractCegarLoop]: Abstraction has 990 states and 3926 transitions. [2022-01-18 04:30:21,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:21,679 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 3926 transitions. [2022-01-18 04:30:21,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:30:21,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:21,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:21,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:21,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-18 04:30:21,896 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:21,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash -586124957, now seen corresponding path program 1 times [2022-01-18 04:30:21,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:21,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960373450] [2022-01-18 04:30:21,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:21,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:21,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:21,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:21,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960373450] [2022-01-18 04:30:21,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960373450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:30:21,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:30:21,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 04:30:21,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173320815] [2022-01-18 04:30:21,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:30:21,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 04:30:21,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:21,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 04:30:21,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 04:30:21,934 INFO L87 Difference]: Start difference. First operand 990 states and 3926 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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) [2022-01-18 04:30:21,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:21,977 INFO L93 Difference]: Finished difference Result 1344 states and 5052 transitions. [2022-01-18 04:30:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 04:30:21,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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 21 [2022-01-18 04:30:21,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:21,990 INFO L225 Difference]: With dead ends: 1344 [2022-01-18 04:30:21,991 INFO L226 Difference]: Without dead ends: 1279 [2022-01-18 04:30:21,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 04:30:21,992 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 32 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:21,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 33 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:30:21,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-01-18 04:30:22,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1100. [2022-01-18 04:30:22,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 3.9008189262966333) internal successors, (4287), 1099 states have internal predecessors, (4287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:22,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4287 transitions. [2022-01-18 04:30:22,022 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4287 transitions. Word has length 21 [2022-01-18 04:30:22,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:22,022 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 4287 transitions. [2022-01-18 04:30:22,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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) [2022-01-18 04:30:22,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4287 transitions. [2022-01-18 04:30:22,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:30:22,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:22,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:22,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 04:30:22,027 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:22,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:22,028 INFO L85 PathProgramCache]: Analyzing trace with hash 2039889319, now seen corresponding path program 2 times [2022-01-18 04:30:22,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:22,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941899818] [2022-01-18 04:30:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:22,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:22,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:22,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:22,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941899818] [2022-01-18 04:30:22,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941899818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:30:22,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:30:22,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 04:30:22,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878456195] [2022-01-18 04:30:22,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:30:22,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 04:30:22,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:22,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 04:30:22,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:30:22,089 INFO L87 Difference]: Start difference. First operand 1100 states and 4287 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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) [2022-01-18 04:30:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:22,141 INFO L93 Difference]: Finished difference Result 1412 states and 5401 transitions. [2022-01-18 04:30:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 04:30:22,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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 21 [2022-01-18 04:30:22,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:22,149 INFO L225 Difference]: With dead ends: 1412 [2022-01-18 04:30:22,149 INFO L226 Difference]: Without dead ends: 1412 [2022-01-18 04:30:22,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:30:22,150 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 54 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:22,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 32 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:30:22,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2022-01-18 04:30:22,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1174. [2022-01-18 04:30:22,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1173 states have (on average 3.9028132992327365) internal successors, (4578), 1173 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 4578 transitions. [2022-01-18 04:30:22,184 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 4578 transitions. Word has length 21 [2022-01-18 04:30:22,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:22,184 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 4578 transitions. [2022-01-18 04:30:22,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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) [2022-01-18 04:30:22,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 4578 transitions. [2022-01-18 04:30:22,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 04:30:22,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:22,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:22,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 04:30:22,187 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:22,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:22,189 INFO L85 PathProgramCache]: Analyzing trace with hash -104341599, now seen corresponding path program 2 times [2022-01-18 04:30:22,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:22,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82485886] [2022-01-18 04:30:22,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:22,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:22,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:22,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82485886] [2022-01-18 04:30:22,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82485886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:30:22,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:30:22,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 04:30:22,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867244349] [2022-01-18 04:30:22,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:30:22,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 04:30:22,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:22,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 04:30:22,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:30:22,242 INFO L87 Difference]: Start difference. First operand 1174 states and 4578 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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) [2022-01-18 04:30:22,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:22,296 INFO L93 Difference]: Finished difference Result 1589 states and 6051 transitions. [2022-01-18 04:30:22,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 04:30:22,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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 21 [2022-01-18 04:30:22,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:22,305 INFO L225 Difference]: With dead ends: 1589 [2022-01-18 04:30:22,305 INFO L226 Difference]: Without dead ends: 1589 [2022-01-18 04:30:22,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:30:22,308 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 55 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:22,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 43 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:30:22,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2022-01-18 04:30:22,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1285. [2022-01-18 04:30:22,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1284 states have (on average 3.9088785046728973) internal successors, (5019), 1284 states have internal predecessors, (5019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:22,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 5019 transitions. [2022-01-18 04:30:22,363 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 5019 transitions. Word has length 21 [2022-01-18 04:30:22,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:22,364 INFO L470 AbstractCegarLoop]: Abstraction has 1285 states and 5019 transitions. [2022-01-18 04:30:22,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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) [2022-01-18 04:30:22,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 5019 transitions. [2022-01-18 04:30:22,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 04:30:22,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:22,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:22,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 04:30:22,367 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:22,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:22,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1270025759, now seen corresponding path program 1 times [2022-01-18 04:30:22,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:22,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732877029] [2022-01-18 04:30:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:22,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:22,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:22,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732877029] [2022-01-18 04:30:22,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732877029] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:22,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70438195] [2022-01-18 04:30:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:22,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:22,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:22,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:22,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 04:30:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:22,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:30:22,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:22,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:22,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70438195] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:22,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:22,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2022-01-18 04:30:22,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876138453] [2022-01-18 04:30:22,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:22,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 04:30:22,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:22,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 04:30:22,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:30:22,801 INFO L87 Difference]: Start difference. First operand 1285 states and 5019 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:22,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:22,892 INFO L93 Difference]: Finished difference Result 2143 states and 8130 transitions. [2022-01-18 04:30:22,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 04:30:22,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 04:30:22,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:22,903 INFO L225 Difference]: With dead ends: 2143 [2022-01-18 04:30:22,903 INFO L226 Difference]: Without dead ends: 2075 [2022-01-18 04:30:22,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:30:22,904 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:22,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 36 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:22,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-01-18 04:30:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1564. [2022-01-18 04:30:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1563 states have (on average 3.9366602687140113) internal successors, (6153), 1563 states have internal predecessors, (6153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 6153 transitions. [2022-01-18 04:30:22,949 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 6153 transitions. Word has length 23 [2022-01-18 04:30:22,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:22,949 INFO L470 AbstractCegarLoop]: Abstraction has 1564 states and 6153 transitions. [2022-01-18 04:30:22,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:22,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 6153 transitions. [2022-01-18 04:30:22,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 04:30:22,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:22,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:22,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:23,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:23,170 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:23,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:23,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1128387681, now seen corresponding path program 2 times [2022-01-18 04:30:23,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:23,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587009956] [2022-01-18 04:30:23,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:23,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:30:23,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:23,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587009956] [2022-01-18 04:30:23,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587009956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:30:23,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:30:23,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 04:30:23,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179024715] [2022-01-18 04:30:23,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:30:23,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 04:30:23,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:23,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 04:30:23,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 04:30:23,209 INFO L87 Difference]: Start difference. First operand 1564 states and 6153 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:23,278 INFO L93 Difference]: Finished difference Result 2365 states and 9064 transitions. [2022-01-18 04:30:23,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 04:30:23,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 04:30:23,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:23,290 INFO L225 Difference]: With dead ends: 2365 [2022-01-18 04:30:23,291 INFO L226 Difference]: Without dead ends: 2297 [2022-01-18 04:30:23,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 04:30:23,291 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:23,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 26 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:23,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2022-01-18 04:30:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1785. [2022-01-18 04:30:23,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 3.9551569506726456) internal successors, (7056), 1784 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7056 transitions. [2022-01-18 04:30:23,341 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7056 transitions. Word has length 23 [2022-01-18 04:30:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:23,342 INFO L470 AbstractCegarLoop]: Abstraction has 1785 states and 7056 transitions. [2022-01-18 04:30:23,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:23,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7056 transitions. [2022-01-18 04:30:23,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 04:30:23,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:23,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:23,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 04:30:23,347 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:23,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:23,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1784493855, now seen corresponding path program 1 times [2022-01-18 04:30:23,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:23,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560041797] [2022-01-18 04:30:23,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:23,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:23,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:23,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560041797] [2022-01-18 04:30:23,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560041797] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:23,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468545545] [2022-01-18 04:30:23,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:23,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:23,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:23,381 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:23,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 04:30:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:23,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 04:30:23,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:23,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:23,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:23,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468545545] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:23,678 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:23,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2022-01-18 04:30:23,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084270887] [2022-01-18 04:30:23,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:23,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 04:30:23,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:23,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 04:30:23,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:30:23,679 INFO L87 Difference]: Start difference. First operand 1785 states and 7056 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:23,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:23,769 INFO L93 Difference]: Finished difference Result 2448 states and 9424 transitions. [2022-01-18 04:30:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 04:30:23,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 04:30:23,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:23,784 INFO L225 Difference]: With dead ends: 2448 [2022-01-18 04:30:23,784 INFO L226 Difference]: Without dead ends: 2397 [2022-01-18 04:30:23,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:30:23,785 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:23,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 39 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:23,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2022-01-18 04:30:23,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2051. [2022-01-18 04:30:23,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 2050 states have (on average 3.951219512195122) internal successors, (8100), 2050 states have internal predecessors, (8100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 8100 transitions. [2022-01-18 04:30:23,831 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 8100 transitions. Word has length 23 [2022-01-18 04:30:23,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:23,831 INFO L470 AbstractCegarLoop]: Abstraction has 2051 states and 8100 transitions. [2022-01-18 04:30:23,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:23,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 8100 transitions. [2022-01-18 04:30:23,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 04:30:23,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:23,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:23,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:24,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:24,066 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:24,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:24,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1452355087, now seen corresponding path program 2 times [2022-01-18 04:30:24,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:24,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785793332] [2022-01-18 04:30:24,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:24,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:30:24,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:24,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785793332] [2022-01-18 04:30:24,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785793332] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:30:24,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:30:24,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 04:30:24,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135106339] [2022-01-18 04:30:24,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:30:24,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 04:30:24,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:24,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 04:30:24,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 04:30:24,098 INFO L87 Difference]: Start difference. First operand 2051 states and 8100 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:24,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:24,161 INFO L93 Difference]: Finished difference Result 2710 states and 10468 transitions. [2022-01-18 04:30:24,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 04:30:24,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 04:30:24,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:24,169 INFO L225 Difference]: With dead ends: 2710 [2022-01-18 04:30:24,169 INFO L226 Difference]: Without dead ends: 2659 [2022-01-18 04:30:24,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 04:30:24,170 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:24,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 27 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 04:30:24,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2022-01-18 04:30:24,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2311. [2022-01-18 04:30:24,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2311 states, 2310 states have (on average 3.9484848484848483) internal successors, (9121), 2310 states have internal predecessors, (9121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 9121 transitions. [2022-01-18 04:30:24,219 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 9121 transitions. Word has length 23 [2022-01-18 04:30:24,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:24,219 INFO L470 AbstractCegarLoop]: Abstraction has 2311 states and 9121 transitions. [2022-01-18 04:30:24,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:24,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 9121 transitions. [2022-01-18 04:30:24,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:24,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:24,225 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:24,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 04:30:24,225 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:24,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:24,225 INFO L85 PathProgramCache]: Analyzing trace with hash -397256989, now seen corresponding path program 3 times [2022-01-18 04:30:24,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:24,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998264528] [2022-01-18 04:30:24,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:24,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:24,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:24,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998264528] [2022-01-18 04:30:24,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998264528] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:24,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752320432] [2022-01-18 04:30:24,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:30:24,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:24,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:24,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:24,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 04:30:24,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:30:24,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:24,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:24,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:24,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:24,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752320432] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:24,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:24,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 04:30:24,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925725845] [2022-01-18 04:30:24,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:24,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:24,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:24,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:24,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:24,375 INFO L87 Difference]: Start difference. First operand 2311 states and 9121 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 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) [2022-01-18 04:30:24,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:24,719 INFO L93 Difference]: Finished difference Result 6038 states and 23046 transitions. [2022-01-18 04:30:24,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 04:30:24,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:24,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:24,738 INFO L225 Difference]: With dead ends: 6038 [2022-01-18 04:30:24,738 INFO L226 Difference]: Without dead ends: 6038 [2022-01-18 04:30:24,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-01-18 04:30:24,739 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 186 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:24,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 252 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:30:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6038 states. [2022-01-18 04:30:24,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6038 to 2800. [2022-01-18 04:30:24,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2800 states, 2799 states have (on average 4.00821722043587) internal successors, (11219), 2799 states have internal predecessors, (11219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:24,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2800 states to 2800 states and 11219 transitions. [2022-01-18 04:30:24,824 INFO L78 Accepts]: Start accepts. Automaton has 2800 states and 11219 transitions. Word has length 25 [2022-01-18 04:30:24,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:24,824 INFO L470 AbstractCegarLoop]: Abstraction has 2800 states and 11219 transitions. [2022-01-18 04:30:24,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 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) [2022-01-18 04:30:24,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2800 states and 11219 transitions. [2022-01-18 04:30:24,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:24,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:24,830 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:24,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:25,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-18 04:30:25,047 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:25,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:25,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2030384925, now seen corresponding path program 4 times [2022-01-18 04:30:25,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:25,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829940199] [2022-01-18 04:30:25,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:25,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:25,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:25,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:25,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829940199] [2022-01-18 04:30:25,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829940199] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:25,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434241998] [2022-01-18 04:30:25,069 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:30:25,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:25,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:25,070 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:25,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 04:30:25,094 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:30:25,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:25,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:25,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:25,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:25,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434241998] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:25,178 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:25,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 04:30:25,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649789884] [2022-01-18 04:30:25,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:25,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:25,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:25,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:25,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:25,179 INFO L87 Difference]: Start difference. First operand 2800 states and 11219 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 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) [2022-01-18 04:30:25,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:25,379 INFO L93 Difference]: Finished difference Result 5607 states and 21463 transitions. [2022-01-18 04:30:25,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 04:30:25,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:25,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:25,396 INFO L225 Difference]: With dead ends: 5607 [2022-01-18 04:30:25,396 INFO L226 Difference]: Without dead ends: 5495 [2022-01-18 04:30:25,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:30:25,397 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 250 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:25,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 142 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:25,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2022-01-18 04:30:25,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 3696. [2022-01-18 04:30:25,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 3695 states have (on average 4.088227334235453) internal successors, (15106), 3695 states have internal predecessors, (15106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 15106 transitions. [2022-01-18 04:30:25,519 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 15106 transitions. Word has length 25 [2022-01-18 04:30:25,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:25,519 INFO L470 AbstractCegarLoop]: Abstraction has 3696 states and 15106 transitions. [2022-01-18 04:30:25,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 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) [2022-01-18 04:30:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 15106 transitions. [2022-01-18 04:30:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:25,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:25,527 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:25,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:25,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:25,746 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:25,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:25,746 INFO L85 PathProgramCache]: Analyzing trace with hash -638630689, now seen corresponding path program 5 times [2022-01-18 04:30:25,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:25,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979957370] [2022-01-18 04:30:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:25,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:25,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:25,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979957370] [2022-01-18 04:30:25,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979957370] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:25,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870414695] [2022-01-18 04:30:25,765 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:30:25,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:25,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:25,766 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:25,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 04:30:25,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:30:25,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:25,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:25,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:25,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:25,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870414695] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:25,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:25,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:30:25,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019816077] [2022-01-18 04:30:25,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:25,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:25,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:25,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:25,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:25,893 INFO L87 Difference]: Start difference. First operand 3696 states and 15106 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:26,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:26,085 INFO L93 Difference]: Finished difference Result 5302 states and 20641 transitions. [2022-01-18 04:30:26,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 04:30:26,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:26,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:26,101 INFO L225 Difference]: With dead ends: 5302 [2022-01-18 04:30:26,101 INFO L226 Difference]: Without dead ends: 5302 [2022-01-18 04:30:26,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:30:26,102 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 252 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:26,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 126 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:26,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5302 states. [2022-01-18 04:30:26,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5302 to 3659. [2022-01-18 04:30:26,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 3658 states have (on average 4.064516129032258) internal successors, (14868), 3658 states have internal predecessors, (14868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:26,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 14868 transitions. [2022-01-18 04:30:26,192 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 14868 transitions. Word has length 25 [2022-01-18 04:30:26,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:26,192 INFO L470 AbstractCegarLoop]: Abstraction has 3659 states and 14868 transitions. [2022-01-18 04:30:26,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 14868 transitions. [2022-01-18 04:30:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:26,200 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:26,200 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:26,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:26,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:26,416 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:26,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:26,417 INFO L85 PathProgramCache]: Analyzing trace with hash -192019813, now seen corresponding path program 6 times [2022-01-18 04:30:26,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:26,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880825650] [2022-01-18 04:30:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:26,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:26,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:26,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880825650] [2022-01-18 04:30:26,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880825650] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:26,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387984014] [2022-01-18 04:30:26,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:30:26,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:26,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:26,440 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:26,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 04:30:26,484 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:30:26,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:26,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:26,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:26,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:26,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387984014] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:26,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:26,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:30:26,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347867104] [2022-01-18 04:30:26,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:26,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:26,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:26,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:26,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:26,574 INFO L87 Difference]: Start difference. First operand 3659 states and 14868 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:26,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:26,770 INFO L93 Difference]: Finished difference Result 4788 states and 18687 transitions. [2022-01-18 04:30:26,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:30:26,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:26,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:26,785 INFO L225 Difference]: With dead ends: 4788 [2022-01-18 04:30:26,785 INFO L226 Difference]: Without dead ends: 4768 [2022-01-18 04:30:26,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:30:26,785 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 158 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:26,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 189 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:26,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4768 states. [2022-01-18 04:30:26,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4768 to 3665. [2022-01-18 04:30:26,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 3664 states have (on average 4.060316593886463) internal successors, (14877), 3664 states have internal predecessors, (14877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:26,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 14877 transitions. [2022-01-18 04:30:26,865 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 14877 transitions. Word has length 25 [2022-01-18 04:30:26,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:26,866 INFO L470 AbstractCegarLoop]: Abstraction has 3665 states and 14877 transitions. [2022-01-18 04:30:26,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:26,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 14877 transitions. [2022-01-18 04:30:26,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:26,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:26,874 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:26,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:27,089 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,SelfDestructingSolverStorable14 [2022-01-18 04:30:27,090 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:27,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:27,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2044906781, now seen corresponding path program 7 times [2022-01-18 04:30:27,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:27,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180672903] [2022-01-18 04:30:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:27,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:27,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:27,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180672903] [2022-01-18 04:30:27,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180672903] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:27,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806780112] [2022-01-18 04:30:27,119 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:30:27,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:27,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:27,120 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:27,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 04:30:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:27,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:27,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:27,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:27,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806780112] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:27,247 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:27,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:30:27,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915563194] [2022-01-18 04:30:27,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:27,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:27,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:27,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:27,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:27,249 INFO L87 Difference]: Start difference. First operand 3665 states and 14877 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:27,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:27,458 INFO L93 Difference]: Finished difference Result 7954 states and 31437 transitions. [2022-01-18 04:30:27,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 04:30:27,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:27,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:27,482 INFO L225 Difference]: With dead ends: 7954 [2022-01-18 04:30:27,482 INFO L226 Difference]: Without dead ends: 7954 [2022-01-18 04:30:27,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:30:27,483 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 258 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:27,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 120 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:27,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7954 states. [2022-01-18 04:30:27,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7954 to 4610. [2022-01-18 04:30:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4609 states have (on average 4.175092210891734) internal successors, (19243), 4609 states have internal predecessors, (19243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:27,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 19243 transitions. [2022-01-18 04:30:27,606 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 19243 transitions. Word has length 25 [2022-01-18 04:30:27,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:27,606 INFO L470 AbstractCegarLoop]: Abstraction has 4610 states and 19243 transitions. [2022-01-18 04:30:27,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:27,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 19243 transitions. [2022-01-18 04:30:27,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:27,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:27,616 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:27,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-18 04:30:27,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 04:30:27,832 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:27,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:27,833 INFO L85 PathProgramCache]: Analyzing trace with hash 742460259, now seen corresponding path program 8 times [2022-01-18 04:30:27,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:27,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633380392] [2022-01-18 04:30:27,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:27,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:27,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:27,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633380392] [2022-01-18 04:30:27,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633380392] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:27,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242008441] [2022-01-18 04:30:27,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:30:27,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:27,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:27,860 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:27,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 04:30:27,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:30:27,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:27,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:27,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:27,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:27,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242008441] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:27,986 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:27,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:30:27,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766136656] [2022-01-18 04:30:27,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:27,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:27,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:27,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:27,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:27,987 INFO L87 Difference]: Start difference. First operand 4610 states and 19243 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:28,209 INFO L93 Difference]: Finished difference Result 6087 states and 24217 transitions. [2022-01-18 04:30:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:30:28,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:28,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:28,226 INFO L225 Difference]: With dead ends: 6087 [2022-01-18 04:30:28,227 INFO L226 Difference]: Without dead ends: 6059 [2022-01-18 04:30:28,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:30:28,227 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 150 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:28,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 207 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:30:28,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6059 states. [2022-01-18 04:30:28,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6059 to 4587. [2022-01-18 04:30:28,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4587 states, 4586 states have (on average 4.174662014827737) internal successors, (19145), 4586 states have internal predecessors, (19145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 19145 transitions. [2022-01-18 04:30:28,330 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 19145 transitions. Word has length 25 [2022-01-18 04:30:28,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:28,330 INFO L470 AbstractCegarLoop]: Abstraction has 4587 states and 19145 transitions. [2022-01-18 04:30:28,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:28,331 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 19145 transitions. [2022-01-18 04:30:28,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:28,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:28,340 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:28,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:28,555 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,SelfDestructingSolverStorable16 [2022-01-18 04:30:28,555 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:28,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:28,556 INFO L85 PathProgramCache]: Analyzing trace with hash -316492321, now seen corresponding path program 9 times [2022-01-18 04:30:28,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:28,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054479411] [2022-01-18 04:30:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:28,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:28,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:28,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054479411] [2022-01-18 04:30:28,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054479411] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:28,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155165564] [2022-01-18 04:30:28,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:30:28,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:28,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:28,577 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:28,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 04:30:28,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:30:28,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:28,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:28,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:28,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:28,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:28,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:28,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155165564] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:28,704 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:28,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:30:28,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143252851] [2022-01-18 04:30:28,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:28,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:28,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:28,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:28,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:28,705 INFO L87 Difference]: Start difference. First operand 4587 states and 19145 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:28,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:28,959 INFO L93 Difference]: Finished difference Result 6950 states and 27646 transitions. [2022-01-18 04:30:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 04:30:28,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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 25 [2022-01-18 04:30:28,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:28,979 INFO L225 Difference]: With dead ends: 6950 [2022-01-18 04:30:28,980 INFO L226 Difference]: Without dead ends: 6950 [2022-01-18 04:30:28,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:30:28,980 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 189 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:28,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 192 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:30:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6950 states. [2022-01-18 04:30:29,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6950 to 4669. [2022-01-18 04:30:29,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4669 states, 4668 states have (on average 4.1782347900599826) internal successors, (19504), 4668 states have internal predecessors, (19504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4669 states to 4669 states and 19504 transitions. [2022-01-18 04:30:29,111 INFO L78 Accepts]: Start accepts. Automaton has 4669 states and 19504 transitions. Word has length 25 [2022-01-18 04:30:29,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:29,111 INFO L470 AbstractCegarLoop]: Abstraction has 4669 states and 19504 transitions. [2022-01-18 04:30:29,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:29,111 INFO L276 IsEmpty]: Start isEmpty. Operand 4669 states and 19504 transitions. [2022-01-18 04:30:29,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:29,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:29,121 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:29,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:29,335 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,SelfDestructingSolverStorable17 [2022-01-18 04:30:29,335 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:29,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:29,336 INFO L85 PathProgramCache]: Analyzing trace with hash 130118555, now seen corresponding path program 10 times [2022-01-18 04:30:29,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:29,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747554367] [2022-01-18 04:30:29,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:29,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:29,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:29,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747554367] [2022-01-18 04:30:29,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747554367] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:29,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064528260] [2022-01-18 04:30:29,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:30:29,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:29,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:29,357 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:29,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 04:30:29,378 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:30:29,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:29,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:29,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:29,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:29,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064528260] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:29,471 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:29,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:30:29,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771138407] [2022-01-18 04:30:29,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:29,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:29,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:29,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:29,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:29,472 INFO L87 Difference]: Start difference. First operand 4669 states and 19504 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:29,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:29,689 INFO L93 Difference]: Finished difference Result 7627 states and 29903 transitions. [2022-01-18 04:30:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 04:30:29,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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 25 [2022-01-18 04:30:29,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:29,708 INFO L225 Difference]: With dead ends: 7627 [2022-01-18 04:30:29,708 INFO L226 Difference]: Without dead ends: 7607 [2022-01-18 04:30:29,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:30:29,709 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 265 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:29,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 151 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:29,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7607 states. [2022-01-18 04:30:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7607 to 4687. [2022-01-18 04:30:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4687 states, 4686 states have (on average 4.173068715322237) internal successors, (19555), 4686 states have internal predecessors, (19555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:29,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 19555 transitions. [2022-01-18 04:30:29,823 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 19555 transitions. Word has length 25 [2022-01-18 04:30:29,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:29,823 INFO L470 AbstractCegarLoop]: Abstraction has 4687 states and 19555 transitions. [2022-01-18 04:30:29,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:29,824 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 19555 transitions. [2022-01-18 04:30:29,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:29,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:29,834 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:29,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:30,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:30,047 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:30,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:30,048 INFO L85 PathProgramCache]: Analyzing trace with hash -585238749, now seen corresponding path program 11 times [2022-01-18 04:30:30,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:30,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999436091] [2022-01-18 04:30:30,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:30,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:30,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:30,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:30,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999436091] [2022-01-18 04:30:30,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999436091] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:30,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358960295] [2022-01-18 04:30:30,070 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:30:30,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:30,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:30,071 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:30,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 04:30:30,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:30:30,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:30,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:30,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:30,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:30,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:30,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358960295] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:30,196 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:30,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 04:30:30,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868574394] [2022-01-18 04:30:30,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:30,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:30,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:30,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:30,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:30,197 INFO L87 Difference]: Start difference. First operand 4687 states and 19555 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:30,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:30,535 INFO L93 Difference]: Finished difference Result 7378 states and 29710 transitions. [2022-01-18 04:30:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 04:30:30,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:30,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:30,586 INFO L225 Difference]: With dead ends: 7378 [2022-01-18 04:30:30,587 INFO L226 Difference]: Without dead ends: 7378 [2022-01-18 04:30:30,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-01-18 04:30:30,587 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 161 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:30,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 233 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:30:30,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7378 states. [2022-01-18 04:30:30,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7378 to 5057. [2022-01-18 04:30:30,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5057 states, 5056 states have (on average 4.166139240506329) internal successors, (21064), 5056 states have internal predecessors, (21064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:30,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5057 states to 5057 states and 21064 transitions. [2022-01-18 04:30:30,693 INFO L78 Accepts]: Start accepts. Automaton has 5057 states and 21064 transitions. Word has length 25 [2022-01-18 04:30:30,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:30,694 INFO L470 AbstractCegarLoop]: Abstraction has 5057 states and 21064 transitions. [2022-01-18 04:30:30,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:30,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5057 states and 21064 transitions. [2022-01-18 04:30:30,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:30,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:30,705 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:30,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:30,921 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,SelfDestructingSolverStorable19 [2022-01-18 04:30:30,922 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:30,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:30,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1874482561, now seen corresponding path program 12 times [2022-01-18 04:30:30,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:30,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908967329] [2022-01-18 04:30:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:30,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:30,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:30,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908967329] [2022-01-18 04:30:30,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908967329] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:30,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820715828] [2022-01-18 04:30:30,944 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:30:30,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:30,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:30,944 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:30,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 04:30:30,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:30:30,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:30,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:30,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:31,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:31,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:31,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820715828] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:31,056 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:31,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 04:30:31,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537774030] [2022-01-18 04:30:31,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:31,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:31,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:31,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:31,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:31,058 INFO L87 Difference]: Start difference. First operand 5057 states and 21064 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:31,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:31,258 INFO L93 Difference]: Finished difference Result 7943 states and 31115 transitions. [2022-01-18 04:30:31,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 04:30:31,259 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:31,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:31,279 INFO L225 Difference]: With dead ends: 7943 [2022-01-18 04:30:31,279 INFO L226 Difference]: Without dead ends: 7883 [2022-01-18 04:30:31,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:30:31,279 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 260 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:31,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 138 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:31,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7883 states. [2022-01-18 04:30:31,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7883 to 5255. [2022-01-18 04:30:31,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5255 states, 5254 states have (on average 4.142558051008756) internal successors, (21765), 5254 states have internal predecessors, (21765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:31,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 21765 transitions. [2022-01-18 04:30:31,390 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 21765 transitions. Word has length 25 [2022-01-18 04:30:31,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:31,390 INFO L470 AbstractCegarLoop]: Abstraction has 5255 states and 21765 transitions. [2022-01-18 04:30:31,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:31,391 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 21765 transitions. [2022-01-18 04:30:31,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:31,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:31,402 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:31,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:31,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:31,611 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:31,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:31,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1929197791, now seen corresponding path program 3 times [2022-01-18 04:30:31,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:31,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134225871] [2022-01-18 04:30:31,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:31,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:31,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:31,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134225871] [2022-01-18 04:30:31,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134225871] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:31,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392945582] [2022-01-18 04:30:31,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:30:31,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:31,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:31,649 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:31,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 04:30:31,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:30:31,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:31,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:31,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:31,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:31,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:31,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392945582] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:31,774 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:31,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 04:30:31,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188512002] [2022-01-18 04:30:31,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:31,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:31,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:31,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:31,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:31,774 INFO L87 Difference]: Start difference. First operand 5255 states and 21765 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:32,190 INFO L93 Difference]: Finished difference Result 16146 states and 66180 transitions. [2022-01-18 04:30:32,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 04:30:32,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:32,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:32,238 INFO L225 Difference]: With dead ends: 16146 [2022-01-18 04:30:32,239 INFO L226 Difference]: Without dead ends: 16146 [2022-01-18 04:30:32,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-01-18 04:30:32,239 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 156 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:32,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 268 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:30:32,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16146 states. [2022-01-18 04:30:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16146 to 7401. [2022-01-18 04:30:32,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7401 states, 7400 states have (on average 4.2628378378378375) internal successors, (31545), 7400 states have internal predecessors, (31545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:32,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7401 states to 7401 states and 31545 transitions. [2022-01-18 04:30:32,435 INFO L78 Accepts]: Start accepts. Automaton has 7401 states and 31545 transitions. Word has length 25 [2022-01-18 04:30:32,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:32,435 INFO L470 AbstractCegarLoop]: Abstraction has 7401 states and 31545 transitions. [2022-01-18 04:30:32,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:32,435 INFO L276 IsEmpty]: Start isEmpty. Operand 7401 states and 31545 transitions. [2022-01-18 04:30:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:32,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:32,450 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:32,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:32,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:32,651 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:32,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:32,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1602824093, now seen corresponding path program 4 times [2022-01-18 04:30:32,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:32,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726436397] [2022-01-18 04:30:32,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:32,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:32,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:32,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726436397] [2022-01-18 04:30:32,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726436397] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:32,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345234656] [2022-01-18 04:30:32,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:30:32,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:32,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:32,672 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:32,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 04:30:32,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:30:32,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:32,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:32,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:32,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:32,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345234656] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:32,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:32,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 04:30:32,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514458919] [2022-01-18 04:30:32,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:32,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:32,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:32,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:32,797 INFO L87 Difference]: Start difference. First operand 7401 states and 31545 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:33,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:33,056 INFO L93 Difference]: Finished difference Result 15690 states and 65076 transitions. [2022-01-18 04:30:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 04:30:33,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:33,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:33,102 INFO L225 Difference]: With dead ends: 15690 [2022-01-18 04:30:33,102 INFO L226 Difference]: Without dead ends: 15594 [2022-01-18 04:30:33,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:30:33,103 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 209 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:33,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 155 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:33,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15594 states. [2022-01-18 04:30:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15594 to 10713. [2022-01-18 04:30:33,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10713 states, 10712 states have (on average 4.391150112023898) internal successors, (47038), 10712 states have internal predecessors, (47038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10713 states to 10713 states and 47038 transitions. [2022-01-18 04:30:33,511 INFO L78 Accepts]: Start accepts. Automaton has 10713 states and 47038 transitions. Word has length 25 [2022-01-18 04:30:33,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:33,511 INFO L470 AbstractCegarLoop]: Abstraction has 10713 states and 47038 transitions. [2022-01-18 04:30:33,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:33,512 INFO L276 IsEmpty]: Start isEmpty. Operand 10713 states and 47038 transitions. [2022-01-18 04:30:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:33,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:33,540 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:33,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:33,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-01-18 04:30:33,741 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:33,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:33,742 INFO L85 PathProgramCache]: Analyzing trace with hash -829404249, now seen corresponding path program 5 times [2022-01-18 04:30:33,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:33,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536347628] [2022-01-18 04:30:33,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:33,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:33,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:33,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536347628] [2022-01-18 04:30:33,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536347628] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:33,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693851778] [2022-01-18 04:30:33,805 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:30:33,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:33,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:33,806 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:33,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 04:30:33,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:30:33,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:33,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:33,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:33,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:33,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693851778] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:33,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:33,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:30:33,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014249116] [2022-01-18 04:30:33,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:33,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:33,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:33,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:33,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:33,929 INFO L87 Difference]: Start difference. First operand 10713 states and 47038 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:34,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:34,194 INFO L93 Difference]: Finished difference Result 15255 states and 64180 transitions. [2022-01-18 04:30:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 04:30:34,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:34,244 INFO L225 Difference]: With dead ends: 15255 [2022-01-18 04:30:34,245 INFO L226 Difference]: Without dead ends: 15255 [2022-01-18 04:30:34,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:30:34,245 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 223 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:34,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 117 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:34,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15255 states. [2022-01-18 04:30:34,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15255 to 10587. [2022-01-18 04:30:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10587 states, 10586 states have (on average 4.366616285660306) internal successors, (46225), 10586 states have internal predecessors, (46225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10587 states to 10587 states and 46225 transitions. [2022-01-18 04:30:34,537 INFO L78 Accepts]: Start accepts. Automaton has 10587 states and 46225 transitions. Word has length 25 [2022-01-18 04:30:34,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:34,537 INFO L470 AbstractCegarLoop]: Abstraction has 10587 states and 46225 transitions. [2022-01-18 04:30:34,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:34,537 INFO L276 IsEmpty]: Start isEmpty. Operand 10587 states and 46225 transitions. [2022-01-18 04:30:34,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:34,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:34,560 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:34,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-01-18 04:30:34,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:34,761 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:34,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:34,761 INFO L85 PathProgramCache]: Analyzing trace with hash 160062431, now seen corresponding path program 6 times [2022-01-18 04:30:34,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:34,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69196379] [2022-01-18 04:30:34,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:34,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:34,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:34,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:34,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69196379] [2022-01-18 04:30:34,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69196379] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:34,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510749414] [2022-01-18 04:30:34,853 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:30:34,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:34,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:34,854 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:34,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 04:30:34,874 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:30:34,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:34,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:34,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:34,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:35,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510749414] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:35,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:35,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:30:35,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631076398] [2022-01-18 04:30:35,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:35,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:35,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:35,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:35,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:35,009 INFO L87 Difference]: Start difference. First operand 10587 states and 46225 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:35,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:35,258 INFO L93 Difference]: Finished difference Result 13469 states and 56467 transitions. [2022-01-18 04:30:35,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:30:35,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:35,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:35,301 INFO L225 Difference]: With dead ends: 13469 [2022-01-18 04:30:35,301 INFO L226 Difference]: Without dead ends: 13444 [2022-01-18 04:30:35,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:30:35,302 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 105 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:35,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 213 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:35,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13444 states. [2022-01-18 04:30:35,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13444 to 10653. [2022-01-18 04:30:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10653 states, 10652 states have (on average 4.361997746901991) internal successors, (46464), 10652 states have internal predecessors, (46464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:35,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10653 states to 10653 states and 46464 transitions. [2022-01-18 04:30:35,572 INFO L78 Accepts]: Start accepts. Automaton has 10653 states and 46464 transitions. Word has length 25 [2022-01-18 04:30:35,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:35,572 INFO L470 AbstractCegarLoop]: Abstraction has 10653 states and 46464 transitions. [2022-01-18 04:30:35,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:35,572 INFO L276 IsEmpty]: Start isEmpty. Operand 10653 states and 46464 transitions. [2022-01-18 04:30:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:35,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:35,594 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:35,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:35,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:35,802 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:35,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:35,802 INFO L85 PathProgramCache]: Analyzing trace with hash -309349743, now seen corresponding path program 7 times [2022-01-18 04:30:35,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:35,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093994194] [2022-01-18 04:30:35,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:35,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:35,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:35,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093994194] [2022-01-18 04:30:35,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093994194] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:35,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761635992] [2022-01-18 04:30:35,832 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:30:35,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:35,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:35,833 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:35,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 04:30:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:35,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:35,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:35,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:35,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:35,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761635992] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:35,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:35,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:30:35,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044333705] [2022-01-18 04:30:35,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:35,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:35,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:35,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:35,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:35,957 INFO L87 Difference]: Start difference. First operand 10653 states and 46464 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:36,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:36,359 INFO L93 Difference]: Finished difference Result 23056 states and 98319 transitions. [2022-01-18 04:30:36,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 04:30:36,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:36,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:36,441 INFO L225 Difference]: With dead ends: 23056 [2022-01-18 04:30:36,441 INFO L226 Difference]: Without dead ends: 23056 [2022-01-18 04:30:36,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:30:36,442 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 216 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:36,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 140 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:36,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23056 states. [2022-01-18 04:30:36,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23056 to 14095. [2022-01-18 04:30:36,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14095 states, 14094 states have (on average 4.5) internal successors, (63423), 14094 states have internal predecessors, (63423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:36,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14095 states to 14095 states and 63423 transitions. [2022-01-18 04:30:36,915 INFO L78 Accepts]: Start accepts. Automaton has 14095 states and 63423 transitions. Word has length 25 [2022-01-18 04:30:36,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:36,916 INFO L470 AbstractCegarLoop]: Abstraction has 14095 states and 63423 transitions. [2022-01-18 04:30:36,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:36,916 INFO L276 IsEmpty]: Start isEmpty. Operand 14095 states and 63423 transitions. [2022-01-18 04:30:36,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:36,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:36,951 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:36,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:37,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:37,168 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:37,168 INFO L85 PathProgramCache]: Analyzing trace with hash -547313135, now seen corresponding path program 8 times [2022-01-18 04:30:37,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:37,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320371837] [2022-01-18 04:30:37,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:37,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:37,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:37,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320371837] [2022-01-18 04:30:37,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320371837] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:37,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911203981] [2022-01-18 04:30:37,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:30:37,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:37,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:37,193 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:37,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 04:30:37,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:30:37,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:37,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:37,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:37,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:37,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911203981] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:37,309 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:37,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:30:37,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229102625] [2022-01-18 04:30:37,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:37,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:37,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:37,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:37,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:37,310 INFO L87 Difference]: Start difference. First operand 14095 states and 63423 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:37,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:37,708 INFO L93 Difference]: Finished difference Result 18427 states and 79299 transitions. [2022-01-18 04:30:37,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:30:37,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:37,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:37,769 INFO L225 Difference]: With dead ends: 18427 [2022-01-18 04:30:37,769 INFO L226 Difference]: Without dead ends: 18403 [2022-01-18 04:30:37,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-01-18 04:30:37,769 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 140 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:37,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 200 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:37,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18403 states. [2022-01-18 04:30:38,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18403 to 14093. [2022-01-18 04:30:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14093 states, 14092 states have (on average 4.498864604030656) internal successors, (63398), 14092 states have internal predecessors, (63398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14093 states to 14093 states and 63398 transitions. [2022-01-18 04:30:38,166 INFO L78 Accepts]: Start accepts. Automaton has 14093 states and 63398 transitions. Word has length 25 [2022-01-18 04:30:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:38,167 INFO L470 AbstractCegarLoop]: Abstraction has 14093 states and 63398 transitions. [2022-01-18 04:30:38,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 14093 states and 63398 transitions. [2022-01-18 04:30:38,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:38,198 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:38,198 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:38,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:38,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-18 04:30:38,398 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:38,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:38,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2067157521, now seen corresponding path program 9 times [2022-01-18 04:30:38,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:38,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186511052] [2022-01-18 04:30:38,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:38,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:38,421 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:38,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:38,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186511052] [2022-01-18 04:30:38,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186511052] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:38,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556112441] [2022-01-18 04:30:38,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:30:38,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:38,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:38,423 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:38,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 04:30:38,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:30:38,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:38,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:38,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:38,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:38,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556112441] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:38,550 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:38,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:30:38,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365712912] [2022-01-18 04:30:38,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:38,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:38,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:38,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:38,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:38,551 INFO L87 Difference]: Start difference. First operand 14093 states and 63398 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:38,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:38,992 INFO L93 Difference]: Finished difference Result 21428 states and 91981 transitions. [2022-01-18 04:30:38,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 04:30:38,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:38,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:39,070 INFO L225 Difference]: With dead ends: 21428 [2022-01-18 04:30:39,071 INFO L226 Difference]: Without dead ends: 21428 [2022-01-18 04:30:39,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:30:39,071 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 193 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:39,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 187 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:30:39,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21428 states. [2022-01-18 04:30:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21428 to 14369. [2022-01-18 04:30:39,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14369 states, 14368 states have (on average 4.502227171492205) internal successors, (64688), 14368 states have internal predecessors, (64688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14369 states to 14369 states and 64688 transitions. [2022-01-18 04:30:39,520 INFO L78 Accepts]: Start accepts. Automaton has 14369 states and 64688 transitions. Word has length 25 [2022-01-18 04:30:39,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:39,521 INFO L470 AbstractCegarLoop]: Abstraction has 14369 states and 64688 transitions. [2022-01-18 04:30:39,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:39,521 INFO L276 IsEmpty]: Start isEmpty. Operand 14369 states and 64688 transitions. [2022-01-18 04:30:39,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:39,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:39,556 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:39,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:39,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 04:30:39,756 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:39,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:39,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1238343095, now seen corresponding path program 10 times [2022-01-18 04:30:39,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:39,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503725387] [2022-01-18 04:30:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:39,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:39,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:39,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503725387] [2022-01-18 04:30:39,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503725387] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:39,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973371862] [2022-01-18 04:30:39,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:30:39,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:39,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:39,778 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:39,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 04:30:39,798 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:30:39,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:39,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:39,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:39,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:39,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:39,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973371862] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:39,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:39,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-01-18 04:30:39,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513121501] [2022-01-18 04:30:39,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:39,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:39,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:39,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:39,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:39,900 INFO L87 Difference]: Start difference. First operand 14369 states and 64688 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:40,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:40,219 INFO L93 Difference]: Finished difference Result 21976 states and 93132 transitions. [2022-01-18 04:30:40,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 04:30:40,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:40,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:40,482 INFO L225 Difference]: With dead ends: 21976 [2022-01-18 04:30:40,483 INFO L226 Difference]: Without dead ends: 21951 [2022-01-18 04:30:40,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-01-18 04:30:40,483 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 207 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:40,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 155 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:40,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21951 states. [2022-01-18 04:30:40,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21951 to 14371. [2022-01-18 04:30:40,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14371 states, 14370 states have (on average 4.501530967292972) internal successors, (64687), 14370 states have internal predecessors, (64687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:41,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14371 states to 14371 states and 64687 transitions. [2022-01-18 04:30:41,019 INFO L78 Accepts]: Start accepts. Automaton has 14371 states and 64687 transitions. Word has length 25 [2022-01-18 04:30:41,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:41,022 INFO L470 AbstractCegarLoop]: Abstraction has 14371 states and 64687 transitions. [2022-01-18 04:30:41,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:41,023 INFO L276 IsEmpty]: Start isEmpty. Operand 14371 states and 64687 transitions. [2022-01-18 04:30:41,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:41,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:41,054 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:41,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-01-18 04:30:41,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 04:30:41,255 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:41,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1192902861, now seen corresponding path program 11 times [2022-01-18 04:30:41,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:41,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906640831] [2022-01-18 04:30:41,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:41,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:41,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:41,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906640831] [2022-01-18 04:30:41,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906640831] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:41,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223641364] [2022-01-18 04:30:41,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:30:41,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:41,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:41,284 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:41,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 04:30:41,304 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:30:41,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:41,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:41,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:41,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:41,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:41,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223641364] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:41,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:41,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 04:30:41,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770136139] [2022-01-18 04:30:41,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:41,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:41,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:41,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:41,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:41,406 INFO L87 Difference]: Start difference. First operand 14371 states and 64687 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:41,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:41,934 INFO L93 Difference]: Finished difference Result 23394 states and 101370 transitions. [2022-01-18 04:30:41,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 04:30:41,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:41,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:42,013 INFO L225 Difference]: With dead ends: 23394 [2022-01-18 04:30:42,013 INFO L226 Difference]: Without dead ends: 23394 [2022-01-18 04:30:42,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-01-18 04:30:42,014 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 165 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:42,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 214 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:30:42,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23394 states. [2022-01-18 04:30:42,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23394 to 15994. [2022-01-18 04:30:42,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15994 states, 15993 states have (on average 4.474832739323454) internal successors, (71566), 15993 states have internal predecessors, (71566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:42,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15994 states to 15994 states and 71566 transitions. [2022-01-18 04:30:42,520 INFO L78 Accepts]: Start accepts. Automaton has 15994 states and 71566 transitions. Word has length 25 [2022-01-18 04:30:42,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:42,520 INFO L470 AbstractCegarLoop]: Abstraction has 15994 states and 71566 transitions. [2022-01-18 04:30:42,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:42,520 INFO L276 IsEmpty]: Start isEmpty. Operand 15994 states and 71566 transitions. [2022-01-18 04:30:42,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 04:30:42,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:42,558 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:42,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:42,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:42,759 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:42,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:42,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2059167099, now seen corresponding path program 12 times [2022-01-18 04:30:42,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:42,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401223454] [2022-01-18 04:30:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:42,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:42,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:42,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401223454] [2022-01-18 04:30:42,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401223454] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:42,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133558284] [2022-01-18 04:30:42,788 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:30:42,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:42,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:42,789 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:42,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 04:30:42,810 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 04:30:42,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:42,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 04:30:42,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:42,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:42,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133558284] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:42,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:42,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 04:30:42,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636886627] [2022-01-18 04:30:42,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:42,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:42,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:42,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:42,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:42,913 INFO L87 Difference]: Start difference. First operand 15994 states and 71566 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:43,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:43,275 INFO L93 Difference]: Finished difference Result 23161 states and 98055 transitions. [2022-01-18 04:30:43,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 04:30:43,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 04:30:43,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:43,365 INFO L225 Difference]: With dead ends: 23161 [2022-01-18 04:30:43,365 INFO L226 Difference]: Without dead ends: 23070 [2022-01-18 04:30:43,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-18 04:30:43,366 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 216 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:43,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 144 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:43,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23070 states. [2022-01-18 04:30:43,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23070 to 16749. [2022-01-18 04:30:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16749 states, 16748 states have (on average 4.4525316455696204) internal successors, (74571), 16748 states have internal predecessors, (74571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16749 states to 16749 states and 74571 transitions. [2022-01-18 04:30:43,932 INFO L78 Accepts]: Start accepts. Automaton has 16749 states and 74571 transitions. Word has length 25 [2022-01-18 04:30:43,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:43,932 INFO L470 AbstractCegarLoop]: Abstraction has 16749 states and 74571 transitions. [2022-01-18 04:30:43,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:43,933 INFO L276 IsEmpty]: Start isEmpty. Operand 16749 states and 74571 transitions. [2022-01-18 04:30:44,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:30:44,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:44,087 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:44,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:44,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:44,304 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:44,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash -818219675, now seen corresponding path program 13 times [2022-01-18 04:30:44,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:44,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932219176] [2022-01-18 04:30:44,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:44,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:44,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:44,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932219176] [2022-01-18 04:30:44,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932219176] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:44,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26244168] [2022-01-18 04:30:44,352 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:30:44,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:44,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:44,353 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:44,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 04:30:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:44,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 04:30:44,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:44,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:44,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26244168] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:44,708 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:44,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-01-18 04:30:44,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830854192] [2022-01-18 04:30:44,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:44,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:30:44,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:44,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:30:44,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:30:44,709 INFO L87 Difference]: Start difference. First operand 16749 states and 74571 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:45,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:45,004 INFO L93 Difference]: Finished difference Result 18350 states and 80380 transitions. [2022-01-18 04:30:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:30:45,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 04:30:45,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:45,072 INFO L225 Difference]: With dead ends: 18350 [2022-01-18 04:30:45,072 INFO L226 Difference]: Without dead ends: 18282 [2022-01-18 04:30:45,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:30:45,073 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 71 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:45,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 91 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:30:45,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18282 states. [2022-01-18 04:30:45,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18282 to 17368. [2022-01-18 04:30:45,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17368 states, 17367 states have (on average 4.438244947313871) internal successors, (77079), 17367 states have internal predecessors, (77079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:45,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17368 states to 17368 states and 77079 transitions. [2022-01-18 04:30:45,522 INFO L78 Accepts]: Start accepts. Automaton has 17368 states and 77079 transitions. Word has length 27 [2022-01-18 04:30:45,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:45,522 INFO L470 AbstractCegarLoop]: Abstraction has 17368 states and 77079 transitions. [2022-01-18 04:30:45,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:45,522 INFO L276 IsEmpty]: Start isEmpty. Operand 17368 states and 77079 transitions. [2022-01-18 04:30:45,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:30:45,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:45,560 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:45,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:45,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-01-18 04:30:45,761 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:45,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:45,762 INFO L85 PathProgramCache]: Analyzing trace with hash -850989663, now seen corresponding path program 14 times [2022-01-18 04:30:45,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:45,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869372490] [2022-01-18 04:30:45,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:45,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:30:45,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:45,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869372490] [2022-01-18 04:30:45,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869372490] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:45,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457002926] [2022-01-18 04:30:45,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:30:45,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:45,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:45,812 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:45,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 04:30:45,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:30:45,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:45,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 04:30:45,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:46,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:46,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:30:46,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457002926] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:46,212 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:46,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 7 [2022-01-18 04:30:46,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355331746] [2022-01-18 04:30:46,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:46,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:46,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:46,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:46,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:46,213 INFO L87 Difference]: Start difference. First operand 17368 states and 77079 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:46,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:46,654 INFO L93 Difference]: Finished difference Result 19060 states and 83209 transitions. [2022-01-18 04:30:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 04:30:46,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 04:30:46,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:46,721 INFO L225 Difference]: With dead ends: 19060 [2022-01-18 04:30:46,721 INFO L226 Difference]: Without dead ends: 18924 [2022-01-18 04:30:46,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:46,721 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 88 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:46,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 106 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:30:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18924 states. [2022-01-18 04:30:47,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18924 to 17614. [2022-01-18 04:30:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17614 states, 17613 states have (on average 4.438199057514336) internal successors, (78170), 17613 states have internal predecessors, (78170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:47,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17614 states to 17614 states and 78170 transitions. [2022-01-18 04:30:47,159 INFO L78 Accepts]: Start accepts. Automaton has 17614 states and 78170 transitions. Word has length 27 [2022-01-18 04:30:47,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:47,160 INFO L470 AbstractCegarLoop]: Abstraction has 17614 states and 78170 transitions. [2022-01-18 04:30:47,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:47,160 INFO L276 IsEmpty]: Start isEmpty. Operand 17614 states and 78170 transitions. [2022-01-18 04:30:47,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:30:47,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:47,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:47,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-01-18 04:30:47,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-01-18 04:30:47,402 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:47,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:47,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1826966111, now seen corresponding path program 1 times [2022-01-18 04:30:47,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:47,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631602807] [2022-01-18 04:30:47,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:47,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:47,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:47,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631602807] [2022-01-18 04:30:47,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631602807] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:47,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985368179] [2022-01-18 04:30:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:47,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:47,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:47,461 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:47,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 04:30:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:47,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 04:30:47,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:47,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:48,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985368179] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:48,019 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:48,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 7 [2022-01-18 04:30:48,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373234882] [2022-01-18 04:30:48,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:48,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:48,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:48,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:48,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:48,020 INFO L87 Difference]: Start difference. First operand 17614 states and 78170 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:48,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:48,375 INFO L93 Difference]: Finished difference Result 18637 states and 81676 transitions. [2022-01-18 04:30:48,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 04:30:48,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 04:30:48,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:48,436 INFO L225 Difference]: With dead ends: 18637 [2022-01-18 04:30:48,436 INFO L226 Difference]: Without dead ends: 18269 [2022-01-18 04:30:48,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:48,437 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 54 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:48,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 105 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:30:48,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18269 states. [2022-01-18 04:30:48,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18269 to 17885. [2022-01-18 04:30:48,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17885 states, 17884 states have (on average 4.4198165958398565) internal successors, (79044), 17884 states have internal predecessors, (79044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:48,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17885 states to 17885 states and 79044 transitions. [2022-01-18 04:30:48,943 INFO L78 Accepts]: Start accepts. Automaton has 17885 states and 79044 transitions. Word has length 27 [2022-01-18 04:30:48,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:48,943 INFO L470 AbstractCegarLoop]: Abstraction has 17885 states and 79044 transitions. [2022-01-18 04:30:48,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:48,944 INFO L276 IsEmpty]: Start isEmpty. Operand 17885 states and 79044 transitions. [2022-01-18 04:30:48,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:30:48,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:48,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:48,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-01-18 04:30:49,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:49,186 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:49,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:49,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1766241133, now seen corresponding path program 2 times [2022-01-18 04:30:49,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:49,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524693602] [2022-01-18 04:30:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:49,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:49,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:49,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524693602] [2022-01-18 04:30:49,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524693602] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:49,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205609563] [2022-01-18 04:30:49,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:30:49,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:49,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:49,243 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:49,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 04:30:49,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:30:49,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:49,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 04:30:49,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:49,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:49,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205609563] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:49,602 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:49,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 7 [2022-01-18 04:30:49,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62281954] [2022-01-18 04:30:49,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:49,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:49,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:49,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:49,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:49,603 INFO L87 Difference]: Start difference. First operand 17885 states and 79044 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:49,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:49,863 INFO L93 Difference]: Finished difference Result 18717 states and 81967 transitions. [2022-01-18 04:30:49,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 04:30:49,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 04:30:49,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:49,921 INFO L225 Difference]: With dead ends: 18717 [2022-01-18 04:30:49,921 INFO L226 Difference]: Without dead ends: 18403 [2022-01-18 04:30:49,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:49,922 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 67 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:49,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 81 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:49,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18403 states. [2022-01-18 04:30:50,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18403 to 17947. [2022-01-18 04:30:50,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17947 states, 17946 states have (on average 4.425554441101081) internal successors, (79421), 17946 states have internal predecessors, (79421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17947 states to 17947 states and 79421 transitions. [2022-01-18 04:30:50,416 INFO L78 Accepts]: Start accepts. Automaton has 17947 states and 79421 transitions. Word has length 27 [2022-01-18 04:30:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:50,416 INFO L470 AbstractCegarLoop]: Abstraction has 17947 states and 79421 transitions. [2022-01-18 04:30:50,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 17947 states and 79421 transitions. [2022-01-18 04:30:50,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:30:50,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:50,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:50,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-01-18 04:30:50,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:50,656 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:50,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:50,657 INFO L85 PathProgramCache]: Analyzing trace with hash -29963743, now seen corresponding path program 3 times [2022-01-18 04:30:50,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:50,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91353700] [2022-01-18 04:30:50,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:50,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:50,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:50,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91353700] [2022-01-18 04:30:50,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91353700] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:50,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411435027] [2022-01-18 04:30:50,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:30:50,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:50,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:50,707 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:50,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 04:30:50,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:30:50,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:50,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 04:30:50,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:50,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:51,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411435027] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:51,102 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:51,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-01-18 04:30:51,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103344516] [2022-01-18 04:30:51,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:51,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:30:51,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:51,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:30:51,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:30:51,102 INFO L87 Difference]: Start difference. First operand 17947 states and 79421 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:51,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:51,372 INFO L93 Difference]: Finished difference Result 18527 states and 81623 transitions. [2022-01-18 04:30:51,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:30:51,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 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 27 [2022-01-18 04:30:51,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:51,432 INFO L225 Difference]: With dead ends: 18527 [2022-01-18 04:30:51,433 INFO L226 Difference]: Without dead ends: 18379 [2022-01-18 04:30:51,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 10 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:30:51,433 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 41 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:51,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 82 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:30:51,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18379 states. [2022-01-18 04:30:51,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18379 to 18247. [2022-01-18 04:30:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18247 states, 18246 states have (on average 4.422942014688151) internal successors, (80701), 18246 states have internal predecessors, (80701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:52,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18247 states to 18247 states and 80701 transitions. [2022-01-18 04:30:52,008 INFO L78 Accepts]: Start accepts. Automaton has 18247 states and 80701 transitions. Word has length 27 [2022-01-18 04:30:52,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:52,008 INFO L470 AbstractCegarLoop]: Abstraction has 18247 states and 80701 transitions. [2022-01-18 04:30:52,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:52,009 INFO L276 IsEmpty]: Start isEmpty. Operand 18247 states and 80701 transitions. [2022-01-18 04:30:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:30:52,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:52,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:52,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-01-18 04:30:52,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:52,254 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:52,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:52,255 INFO L85 PathProgramCache]: Analyzing trace with hash 175276469, now seen corresponding path program 4 times [2022-01-18 04:30:52,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:52,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236554292] [2022-01-18 04:30:52,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:52,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:52,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:52,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236554292] [2022-01-18 04:30:52,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236554292] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:52,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167327718] [2022-01-18 04:30:52,318 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:30:52,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:52,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:52,319 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:52,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 04:30:52,342 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:30:52,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:52,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 04:30:52,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:52,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:52,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:52,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167327718] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:52,719 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:52,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 7 [2022-01-18 04:30:52,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261998965] [2022-01-18 04:30:52,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:52,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:52,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:52,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:52,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:52,720 INFO L87 Difference]: Start difference. First operand 18247 states and 80701 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:53,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:53,172 INFO L93 Difference]: Finished difference Result 19257 states and 84104 transitions. [2022-01-18 04:30:53,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 04:30:53,173 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 04:30:53,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:53,234 INFO L225 Difference]: With dead ends: 19257 [2022-01-18 04:30:53,235 INFO L226 Difference]: Without dead ends: 18829 [2022-01-18 04:30:53,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:53,235 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 58 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:53,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 105 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:30:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18829 states. [2022-01-18 04:30:53,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18829 to 17865. [2022-01-18 04:30:53,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17865 states, 17864 states have (on average 4.420286609941782) internal successors, (78964), 17864 states have internal predecessors, (78964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17865 states to 17865 states and 78964 transitions. [2022-01-18 04:30:53,615 INFO L78 Accepts]: Start accepts. Automaton has 17865 states and 78964 transitions. Word has length 27 [2022-01-18 04:30:53,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:53,615 INFO L470 AbstractCegarLoop]: Abstraction has 17865 states and 78964 transitions. [2022-01-18 04:30:53,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:53,615 INFO L276 IsEmpty]: Start isEmpty. Operand 17865 states and 78964 transitions. [2022-01-18 04:30:53,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:30:53,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:53,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:53,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-01-18 04:30:53,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 04:30:53,856 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:53,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1757100517, now seen corresponding path program 5 times [2022-01-18 04:30:53,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:53,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854025132] [2022-01-18 04:30:53,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:53,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:53,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:53,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854025132] [2022-01-18 04:30:53,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854025132] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:53,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469962347] [2022-01-18 04:30:53,917 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:30:53,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:53,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:53,918 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:53,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 04:30:53,937 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:30:53,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:53,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 04:30:53,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:54,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:54,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:54,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469962347] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:54,395 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:54,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-01-18 04:30:54,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200363174] [2022-01-18 04:30:54,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:54,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:30:54,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:30:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:30:54,396 INFO L87 Difference]: Start difference. First operand 17865 states and 78964 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:54,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:54,649 INFO L93 Difference]: Finished difference Result 18645 states and 81768 transitions. [2022-01-18 04:30:54,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:30:54,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 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 27 [2022-01-18 04:30:54,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:54,713 INFO L225 Difference]: With dead ends: 18645 [2022-01-18 04:30:54,713 INFO L226 Difference]: Without dead ends: 18497 [2022-01-18 04:30:54,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 10 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:30:54,714 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 37 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:54,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 65 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:54,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18497 states. [2022-01-18 04:30:55,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18497 to 18081. [2022-01-18 04:30:55,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18081 states, 18080 states have (on average 4.419358407079646) internal successors, (79902), 18080 states have internal predecessors, (79902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:55,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18081 states to 18081 states and 79902 transitions. [2022-01-18 04:30:55,105 INFO L78 Accepts]: Start accepts. Automaton has 18081 states and 79902 transitions. Word has length 27 [2022-01-18 04:30:55,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:55,105 INFO L470 AbstractCegarLoop]: Abstraction has 18081 states and 79902 transitions. [2022-01-18 04:30:55,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 18081 states and 79902 transitions. [2022-01-18 04:30:55,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:30:55,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:55,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:55,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:55,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-18 04:30:55,345 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:55,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:55,345 INFO L85 PathProgramCache]: Analyzing trace with hash -332468451, now seen corresponding path program 6 times [2022-01-18 04:30:55,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:55,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904352203] [2022-01-18 04:30:55,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:55,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:55,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:55,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904352203] [2022-01-18 04:30:55,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904352203] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:55,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691276847] [2022-01-18 04:30:55,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:30:55,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:55,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:55,470 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:55,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 04:30:55,493 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:30:55,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:55,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 04:30:55,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:55,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:55,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:55,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691276847] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:55,815 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:55,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 7 [2022-01-18 04:30:55,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295856120] [2022-01-18 04:30:55,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:55,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:55,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:55,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:55,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:55,816 INFO L87 Difference]: Start difference. First operand 18081 states and 79902 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:56,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:56,108 INFO L93 Difference]: Finished difference Result 19216 states and 83740 transitions. [2022-01-18 04:30:56,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 04:30:56,109 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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 27 [2022-01-18 04:30:56,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:56,168 INFO L225 Difference]: With dead ends: 19216 [2022-01-18 04:30:56,168 INFO L226 Difference]: Without dead ends: 18872 [2022-01-18 04:30:56,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:56,168 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 50 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:56,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 107 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:30:56,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18872 states. [2022-01-18 04:30:56,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18872 to 18104. [2022-01-18 04:30:56,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18104 states, 18103 states have (on average 4.404131911837817) internal successors, (79728), 18103 states have internal predecessors, (79728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18104 states to 18104 states and 79728 transitions. [2022-01-18 04:30:56,550 INFO L78 Accepts]: Start accepts. Automaton has 18104 states and 79728 transitions. Word has length 27 [2022-01-18 04:30:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:56,551 INFO L470 AbstractCegarLoop]: Abstraction has 18104 states and 79728 transitions. [2022-01-18 04:30:56,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:56,551 INFO L276 IsEmpty]: Start isEmpty. Operand 18104 states and 79728 transitions. [2022-01-18 04:30:56,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:30:56,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:56,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:56,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 04:30:56,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 04:30:56,791 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:56,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:56,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1609977505, now seen corresponding path program 7 times [2022-01-18 04:30:56,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:56,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503861661] [2022-01-18 04:30:56,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:56,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 04:30:56,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:56,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503861661] [2022-01-18 04:30:56,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503861661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 04:30:56,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 04:30:56,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 04:30:56,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891992647] [2022-01-18 04:30:56,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 04:30:56,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 04:30:56,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:56,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 04:30:56,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:30:56,841 INFO L87 Difference]: Start difference. First operand 18104 states and 79728 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:57,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:57,039 INFO L93 Difference]: Finished difference Result 18918 states and 82588 transitions. [2022-01-18 04:30:57,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 04:30:57,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 04:30:57,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:57,104 INFO L225 Difference]: With dead ends: 18918 [2022-01-18 04:30:57,104 INFO L226 Difference]: Without dead ends: 18720 [2022-01-18 04:30:57,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 04:30:57,104 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:57,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 39 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:57,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18720 states. [2022-01-18 04:30:57,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18720 to 18128. [2022-01-18 04:30:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18128 states, 18127 states have (on average 4.411871793457274) internal successors, (79974), 18127 states have internal predecessors, (79974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18128 states to 18128 states and 79974 transitions. [2022-01-18 04:30:57,556 INFO L78 Accepts]: Start accepts. Automaton has 18128 states and 79974 transitions. Word has length 27 [2022-01-18 04:30:57,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:57,556 INFO L470 AbstractCegarLoop]: Abstraction has 18128 states and 79974 transitions. [2022-01-18 04:30:57,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:57,556 INFO L276 IsEmpty]: Start isEmpty. Operand 18128 states and 79974 transitions. [2022-01-18 04:30:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:30:57,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:57,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:57,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-18 04:30:57,599 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:57,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:57,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1434619345, now seen corresponding path program 8 times [2022-01-18 04:30:57,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:57,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95416036] [2022-01-18 04:30:57,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:57,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:57,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:57,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95416036] [2022-01-18 04:30:57,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95416036] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:57,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471248904] [2022-01-18 04:30:57,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:30:57,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:57,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:57,657 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:57,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 04:30:57,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:30:57,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:57,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 04:30:57,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:57,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:30:58,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471248904] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:58,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:58,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-01-18 04:30:58,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365386149] [2022-01-18 04:30:58,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:58,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:30:58,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:58,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:30:58,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:30:58,028 INFO L87 Difference]: Start difference. First operand 18128 states and 79974 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:58,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:58,273 INFO L93 Difference]: Finished difference Result 18732 states and 82218 transitions. [2022-01-18 04:30:58,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:30:58,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 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 27 [2022-01-18 04:30:58,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:58,331 INFO L225 Difference]: With dead ends: 18732 [2022-01-18 04:30:58,332 INFO L226 Difference]: Without dead ends: 18600 [2022-01-18 04:30:58,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 10 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:30:58,332 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 37 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:58,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 73 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:30:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18600 states. [2022-01-18 04:30:58,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18600 to 18396. [2022-01-18 04:30:58,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18396 states, 18395 states have (on average 4.410220168524056) internal successors, (81126), 18395 states have internal predecessors, (81126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:58,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18396 states to 18396 states and 81126 transitions. [2022-01-18 04:30:58,716 INFO L78 Accepts]: Start accepts. Automaton has 18396 states and 81126 transitions. Word has length 27 [2022-01-18 04:30:58,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:30:58,716 INFO L470 AbstractCegarLoop]: Abstraction has 18396 states and 81126 transitions. [2022-01-18 04:30:58,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:58,716 INFO L276 IsEmpty]: Start isEmpty. Operand 18396 states and 81126 transitions. [2022-01-18 04:30:58,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:30:58,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:30:58,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:30:58,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-01-18 04:30:58,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-01-18 04:30:58,960 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:30:58,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:30:58,960 INFO L85 PathProgramCache]: Analyzing trace with hash 769255917, now seen corresponding path program 9 times [2022-01-18 04:30:58,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:30:58,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470457] [2022-01-18 04:30:58,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:30:58,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:30:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:30:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:30:59,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:30:59,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470457] [2022-01-18 04:30:59,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470457] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:30:59,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698192047] [2022-01-18 04:30:59,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:30:59,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:30:59,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:30:59,017 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:30:59,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 04:30:59,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:30:59,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:30:59,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 04:30:59,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:30:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:30:59,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:30:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:30:59,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698192047] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:30:59,424 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:30:59,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 7 [2022-01-18 04:30:59,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705752042] [2022-01-18 04:30:59,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:30:59,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:30:59,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:30:59,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:30:59,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:59,425 INFO L87 Difference]: Start difference. First operand 18396 states and 81126 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:30:59,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:30:59,796 INFO L93 Difference]: Finished difference Result 19604 states and 85164 transitions. [2022-01-18 04:30:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 04:30:59,798 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 04:30:59,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:30:59,864 INFO L225 Difference]: With dead ends: 19604 [2022-01-18 04:30:59,864 INFO L226 Difference]: Without dead ends: 19208 [2022-01-18 04:30:59,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:30:59,865 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 55 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:30:59,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 119 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:30:59,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19208 states. [2022-01-18 04:31:00,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19208 to 18044. [2022-01-18 04:31:00,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18044 states, 18043 states have (on average 4.406916809843152) internal successors, (79514), 18043 states have internal predecessors, (79514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18044 states to 18044 states and 79514 transitions. [2022-01-18 04:31:00,333 INFO L78 Accepts]: Start accepts. Automaton has 18044 states and 79514 transitions. Word has length 27 [2022-01-18 04:31:00,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:00,334 INFO L470 AbstractCegarLoop]: Abstraction has 18044 states and 79514 transitions. [2022-01-18 04:31:00,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:00,334 INFO L276 IsEmpty]: Start isEmpty. Operand 18044 states and 79514 transitions. [2022-01-18 04:31:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:31:00,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:00,376 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:00,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-18 04:31:00,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:00,576 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:00,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:00,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1784277025, now seen corresponding path program 15 times [2022-01-18 04:31:00,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:00,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313500857] [2022-01-18 04:31:00,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:00,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:31:00,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:00,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313500857] [2022-01-18 04:31:00,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313500857] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:00,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217729672] [2022-01-18 04:31:00,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:31:00,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:00,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:00,619 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:00,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 04:31:00,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:31:00,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:00,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 04:31:00,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:00,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:31:00,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217729672] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:00,971 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:00,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-01-18 04:31:00,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851493859] [2022-01-18 04:31:00,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:00,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:31:00,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:31:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:31:00,972 INFO L87 Difference]: Start difference. First operand 18044 states and 79514 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:01,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:01,256 INFO L93 Difference]: Finished difference Result 19592 states and 85134 transitions. [2022-01-18 04:31:01,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:31:01,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 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 27 [2022-01-18 04:31:01,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:01,325 INFO L225 Difference]: With dead ends: 19592 [2022-01-18 04:31:01,325 INFO L226 Difference]: Without dead ends: 19524 [2022-01-18 04:31:01,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:31:01,326 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 67 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:01,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 79 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 04:31:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19524 states. [2022-01-18 04:31:01,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19524 to 18554. [2022-01-18 04:31:01,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18554 states, 18553 states have (on average 4.396647442462135) internal successors, (81571), 18553 states have internal predecessors, (81571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:01,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18554 states to 18554 states and 81571 transitions. [2022-01-18 04:31:01,804 INFO L78 Accepts]: Start accepts. Automaton has 18554 states and 81571 transitions. Word has length 27 [2022-01-18 04:31:01,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:01,804 INFO L470 AbstractCegarLoop]: Abstraction has 18554 states and 81571 transitions. [2022-01-18 04:31:01,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:01,804 INFO L276 IsEmpty]: Start isEmpty. Operand 18554 states and 81571 transitions. [2022-01-18 04:31:01,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:31:01,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:01,849 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:01,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-01-18 04:31:02,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-01-18 04:31:02,050 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:02,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:02,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1862975263, now seen corresponding path program 13 times [2022-01-18 04:31:02,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:02,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627089087] [2022-01-18 04:31:02,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:02,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:02,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:02,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:02,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627089087] [2022-01-18 04:31:02,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627089087] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:02,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324290572] [2022-01-18 04:31:02,106 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:31:02,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:02,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:02,107 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:02,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 04:31:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:02,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 04:31:02,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:02,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:02,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324290572] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:02,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:02,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-01-18 04:31:02,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098195983] [2022-01-18 04:31:02,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:02,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:31:02,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:02,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:31:02,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:31:02,446 INFO L87 Difference]: Start difference. First operand 18554 states and 81571 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:02,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:02,732 INFO L93 Difference]: Finished difference Result 20100 states and 87095 transitions. [2022-01-18 04:31:02,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:31:02,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 04:31:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:02,796 INFO L225 Difference]: With dead ends: 20100 [2022-01-18 04:31:02,797 INFO L226 Difference]: Without dead ends: 20049 [2022-01-18 04:31:02,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:31:02,797 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 63 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:02,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 94 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:31:02,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20049 states. [2022-01-18 04:31:03,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20049 to 19378. [2022-01-18 04:31:03,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19378 states, 19377 states have (on average 4.372555091087372) internal successors, (84727), 19377 states have internal predecessors, (84727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19378 states to 19378 states and 84727 transitions. [2022-01-18 04:31:03,237 INFO L78 Accepts]: Start accepts. Automaton has 19378 states and 84727 transitions. Word has length 27 [2022-01-18 04:31:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:03,237 INFO L470 AbstractCegarLoop]: Abstraction has 19378 states and 84727 transitions. [2022-01-18 04:31:03,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:03,237 INFO L276 IsEmpty]: Start isEmpty. Operand 19378 states and 84727 transitions. [2022-01-18 04:31:03,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:31:03,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:03,280 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:03,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 04:31:03,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:03,480 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:03,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:03,481 INFO L85 PathProgramCache]: Analyzing trace with hash 932751691, now seen corresponding path program 14 times [2022-01-18 04:31:03,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:03,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956181473] [2022-01-18 04:31:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:03,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:31:03,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:03,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956181473] [2022-01-18 04:31:03,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956181473] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:03,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356952059] [2022-01-18 04:31:03,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:31:03,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:03,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:03,525 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:03,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 04:31:03,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:31:03,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:03,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 04:31:03,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:03,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:31:03,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356952059] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:03,922 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:03,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 7 [2022-01-18 04:31:03,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015298306] [2022-01-18 04:31:03,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:03,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 04:31:03,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:03,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 04:31:03,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:31:03,923 INFO L87 Difference]: Start difference. First operand 19378 states and 84727 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:04,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:04,242 INFO L93 Difference]: Finished difference Result 20827 states and 89877 transitions. [2022-01-18 04:31:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 04:31:04,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 04:31:04,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:04,320 INFO L225 Difference]: With dead ends: 20827 [2022-01-18 04:31:04,321 INFO L226 Difference]: Without dead ends: 20725 [2022-01-18 04:31:04,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 04:31:04,321 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 80 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:04,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 100 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:31:04,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20725 states. [2022-01-18 04:31:04,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20725 to 19777. [2022-01-18 04:31:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19777 states, 19776 states have (on average 4.364229368932039) internal successors, (86307), 19776 states have internal predecessors, (86307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:04,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19777 states to 19777 states and 86307 transitions. [2022-01-18 04:31:04,825 INFO L78 Accepts]: Start accepts. Automaton has 19777 states and 86307 transitions. Word has length 27 [2022-01-18 04:31:04,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:04,826 INFO L470 AbstractCegarLoop]: Abstraction has 19777 states and 86307 transitions. [2022-01-18 04:31:04,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:04,826 INFO L276 IsEmpty]: Start isEmpty. Operand 19777 states and 86307 transitions. [2022-01-18 04:31:04,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 04:31:04,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:04,871 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:04,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-01-18 04:31:05,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-01-18 04:31:05,072 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:05,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:05,072 INFO L85 PathProgramCache]: Analyzing trace with hash -534835761, now seen corresponding path program 15 times [2022-01-18 04:31:05,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:05,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685254228] [2022-01-18 04:31:05,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:05,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:31:05,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:05,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685254228] [2022-01-18 04:31:05,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685254228] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:05,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163389060] [2022-01-18 04:31:05,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:31:05,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:05,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:05,120 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:05,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 04:31:05,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:31:05,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:05,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 04:31:05,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:05,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:05,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:31:05,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163389060] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:05,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:05,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 6 [2022-01-18 04:31:05,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131271174] [2022-01-18 04:31:05,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:05,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 04:31:05,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:05,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 04:31:05,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:31:05,531 INFO L87 Difference]: Start difference. First operand 19777 states and 86307 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:05,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:05,832 INFO L93 Difference]: Finished difference Result 21148 states and 91258 transitions. [2022-01-18 04:31:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 04:31:05,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 04:31:05,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:05,905 INFO L225 Difference]: With dead ends: 21148 [2022-01-18 04:31:05,906 INFO L226 Difference]: Without dead ends: 21097 [2022-01-18 04:31:05,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 04:31:05,906 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 63 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:05,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 94 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:31:05,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21097 states. [2022-01-18 04:31:06,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21097 to 20386. [2022-01-18 04:31:06,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20386 states, 20385 states have (on average 4.351925435369144) internal successors, (88714), 20385 states have internal predecessors, (88714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:06,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20386 states to 20386 states and 88714 transitions. [2022-01-18 04:31:06,424 INFO L78 Accepts]: Start accepts. Automaton has 20386 states and 88714 transitions. Word has length 27 [2022-01-18 04:31:06,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:06,424 INFO L470 AbstractCegarLoop]: Abstraction has 20386 states and 88714 transitions. [2022-01-18 04:31:06,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:06,424 INFO L276 IsEmpty]: Start isEmpty. Operand 20386 states and 88714 transitions. [2022-01-18 04:31:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:06,472 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:06,472 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:06,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-01-18 04:31:06,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-01-18 04:31:06,672 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:06,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:06,673 INFO L85 PathProgramCache]: Analyzing trace with hash 136448359, now seen corresponding path program 16 times [2022-01-18 04:31:06,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:06,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895317208] [2022-01-18 04:31:06,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:06,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:06,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:06,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895317208] [2022-01-18 04:31:06,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895317208] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:06,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805629803] [2022-01-18 04:31:06,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:31:06,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:06,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:06,712 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:06,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 04:31:06,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:31:06,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:06,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:06,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:06,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:06,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805629803] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:06,871 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:06,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 04:31:06,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669168037] [2022-01-18 04:31:06,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:06,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:31:06,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:06,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:31:06,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:31:06,872 INFO L87 Difference]: Start difference. First operand 20386 states and 88714 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:08,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:08,201 INFO L93 Difference]: Finished difference Result 53500 states and 225350 transitions. [2022-01-18 04:31:08,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 04:31:08,201 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 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 29 [2022-01-18 04:31:08,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:08,436 INFO L225 Difference]: With dead ends: 53500 [2022-01-18 04:31:08,437 INFO L226 Difference]: Without dead ends: 53500 [2022-01-18 04:31:08,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 04:31:08,438 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 291 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:08,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 685 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:31:08,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53500 states. [2022-01-18 04:31:09,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53500 to 19796. [2022-01-18 04:31:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19796 states, 19795 states have (on average 4.3231624147512) internal successors, (85577), 19795 states have internal predecessors, (85577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:09,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19796 states to 19796 states and 85577 transitions. [2022-01-18 04:31:09,281 INFO L78 Accepts]: Start accepts. Automaton has 19796 states and 85577 transitions. Word has length 29 [2022-01-18 04:31:09,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:09,281 INFO L470 AbstractCegarLoop]: Abstraction has 19796 states and 85577 transitions. [2022-01-18 04:31:09,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:09,282 INFO L276 IsEmpty]: Start isEmpty. Operand 19796 states and 85577 transitions. [2022-01-18 04:31:09,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:09,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:09,328 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:09,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-01-18 04:31:09,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 04:31:09,528 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:09,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:09,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1636435097, now seen corresponding path program 17 times [2022-01-18 04:31:09,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:09,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649600605] [2022-01-18 04:31:09,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:09,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:09,563 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:09,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:09,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649600605] [2022-01-18 04:31:09,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649600605] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:09,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527078740] [2022-01-18 04:31:09,563 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:31:09,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:09,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:09,564 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:09,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 04:31:09,585 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:31:09,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:09,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:09,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:09,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:09,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527078740] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:09,737 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:09,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 04:31:09,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723986333] [2022-01-18 04:31:09,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:09,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:31:09,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:09,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:31:09,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:31:09,738 INFO L87 Difference]: Start difference. First operand 19796 states and 85577 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:10,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:10,433 INFO L93 Difference]: Finished difference Result 43808 states and 178847 transitions. [2022-01-18 04:31:10,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 04:31:10,434 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 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 29 [2022-01-18 04:31:10,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:10,584 INFO L225 Difference]: With dead ends: 43808 [2022-01-18 04:31:10,584 INFO L226 Difference]: Without dead ends: 43528 [2022-01-18 04:31:10,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 04:31:10,585 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 569 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:10,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 282 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:31:10,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43528 states. [2022-01-18 04:31:11,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43528 to 24598. [2022-01-18 04:31:11,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24598 states, 24597 states have (on average 4.382323047526121) internal successors, (107792), 24597 states have internal predecessors, (107792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:11,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24598 states to 24598 states and 107792 transitions. [2022-01-18 04:31:11,426 INFO L78 Accepts]: Start accepts. Automaton has 24598 states and 107792 transitions. Word has length 29 [2022-01-18 04:31:11,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:11,426 INFO L470 AbstractCegarLoop]: Abstraction has 24598 states and 107792 transitions. [2022-01-18 04:31:11,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:11,427 INFO L276 IsEmpty]: Start isEmpty. Operand 24598 states and 107792 transitions. [2022-01-18 04:31:11,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:11,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:11,621 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:11,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-01-18 04:31:11,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-18 04:31:11,822 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:11,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:11,823 INFO L85 PathProgramCache]: Analyzing trace with hash -115245213, now seen corresponding path program 18 times [2022-01-18 04:31:11,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:11,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110563141] [2022-01-18 04:31:11,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:11,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:11,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:11,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110563141] [2022-01-18 04:31:11,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110563141] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:11,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812996493] [2022-01-18 04:31:11,849 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:31:11,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:11,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:11,850 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:11,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 04:31:11,870 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:31:11,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:11,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:11,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:11,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:11,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812996493] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:11,999 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:11,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:31:11,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280914314] [2022-01-18 04:31:11,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:11,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:31:11,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:11,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:31:11,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:31:11,999 INFO L87 Difference]: Start difference. First operand 24598 states and 107792 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:12,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:12,628 INFO L93 Difference]: Finished difference Result 44391 states and 182619 transitions. [2022-01-18 04:31:12,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 04:31:12,628 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:31:12,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:12,789 INFO L225 Difference]: With dead ends: 44391 [2022-01-18 04:31:12,789 INFO L226 Difference]: Without dead ends: 44391 [2022-01-18 04:31:12,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:31:12,790 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 424 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:12,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 295 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:31:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44391 states. [2022-01-18 04:31:13,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44391 to 24443. [2022-01-18 04:31:13,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24443 states, 24442 states have (on average 4.371900826446281) internal successors, (106858), 24442 states have internal predecessors, (106858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:13,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24443 states to 24443 states and 106858 transitions. [2022-01-18 04:31:13,542 INFO L78 Accepts]: Start accepts. Automaton has 24443 states and 106858 transitions. Word has length 29 [2022-01-18 04:31:13,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:13,542 INFO L470 AbstractCegarLoop]: Abstraction has 24443 states and 106858 transitions. [2022-01-18 04:31:13,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:13,542 INFO L276 IsEmpty]: Start isEmpty. Operand 24443 states and 106858 transitions. [2022-01-18 04:31:13,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:13,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:13,597 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:13,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-01-18 04:31:13,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-01-18 04:31:13,801 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:13,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:13,801 INFO L85 PathProgramCache]: Analyzing trace with hash 331365663, now seen corresponding path program 19 times [2022-01-18 04:31:13,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:13,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102582156] [2022-01-18 04:31:13,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:13,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:13,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:13,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102582156] [2022-01-18 04:31:13,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102582156] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:13,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975977077] [2022-01-18 04:31:13,833 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:31:13,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:13,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:13,834 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:13,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 04:31:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:13,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:13,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:13,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:13,969 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:13,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975977077] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:13,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:13,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:31:13,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865358205] [2022-01-18 04:31:13,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:13,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:31:13,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:13,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:31:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:31:13,970 INFO L87 Difference]: Start difference. First operand 24443 states and 106858 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:14,506 INFO L93 Difference]: Finished difference Result 32700 states and 137404 transitions. [2022-01-18 04:31:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 04:31:14,506 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:31:14,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:14,621 INFO L225 Difference]: With dead ends: 32700 [2022-01-18 04:31:14,622 INFO L226 Difference]: Without dead ends: 32680 [2022-01-18 04:31:14,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-01-18 04:31:14,622 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 221 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:14,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 441 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:31:14,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32680 states. [2022-01-18 04:31:15,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32680 to 24521. [2022-01-18 04:31:15,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24521 states, 24520 states have (on average 4.369453507340946) internal successors, (107139), 24520 states have internal predecessors, (107139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:15,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24521 states to 24521 states and 107139 transitions. [2022-01-18 04:31:15,252 INFO L78 Accepts]: Start accepts. Automaton has 24521 states and 107139 transitions. Word has length 29 [2022-01-18 04:31:15,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:15,252 INFO L470 AbstractCegarLoop]: Abstraction has 24521 states and 107139 transitions. [2022-01-18 04:31:15,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 24521 states and 107139 transitions. [2022-01-18 04:31:15,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:15,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:15,310 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:15,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-01-18 04:31:15,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-01-18 04:31:15,510 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:15,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:15,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1556022237, now seen corresponding path program 20 times [2022-01-18 04:31:15,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:15,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037513955] [2022-01-18 04:31:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:15,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:15,535 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:15,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:15,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037513955] [2022-01-18 04:31:15,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037513955] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:15,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198136524] [2022-01-18 04:31:15,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:31:15,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:15,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:15,536 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:15,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 04:31:15,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:31:15,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:15,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:15,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:15,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:15,673 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:15,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198136524] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:15,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:15,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-01-18 04:31:15,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9025296] [2022-01-18 04:31:15,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:15,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:31:15,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:15,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:31:15,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:31:15,674 INFO L87 Difference]: Start difference. First operand 24521 states and 107139 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:16,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:16,566 INFO L93 Difference]: Finished difference Result 84322 states and 354953 transitions. [2022-01-18 04:31:16,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 04:31:16,566 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:31:16,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:16,932 INFO L225 Difference]: With dead ends: 84322 [2022-01-18 04:31:16,932 INFO L226 Difference]: Without dead ends: 84322 [2022-01-18 04:31:16,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-01-18 04:31:16,932 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 481 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:16,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 293 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:31:17,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84322 states. [2022-01-18 04:31:18,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84322 to 31834. [2022-01-18 04:31:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31834 states, 31833 states have (on average 4.49231929130148) internal successors, (143004), 31833 states have internal predecessors, (143004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31834 states to 31834 states and 143004 transitions. [2022-01-18 04:31:18,250 INFO L78 Accepts]: Start accepts. Automaton has 31834 states and 143004 transitions. Word has length 29 [2022-01-18 04:31:18,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:18,251 INFO L470 AbstractCegarLoop]: Abstraction has 31834 states and 143004 transitions. [2022-01-18 04:31:18,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:18,251 INFO L276 IsEmpty]: Start isEmpty. Operand 31834 states and 143004 transitions. [2022-01-18 04:31:18,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:18,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:18,331 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:18,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-01-18 04:31:18,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-01-18 04:31:18,532 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:18,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:18,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1231344803, now seen corresponding path program 21 times [2022-01-18 04:31:18,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:18,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178400159] [2022-01-18 04:31:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:18,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:18,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:18,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178400159] [2022-01-18 04:31:18,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178400159] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:18,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243604898] [2022-01-18 04:31:18,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:31:18,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:18,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:18,557 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:18,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 04:31:18,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:31:18,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:18,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:18,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:18,656 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:18,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:18,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243604898] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:18,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:18,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-01-18 04:31:18,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655732133] [2022-01-18 04:31:18,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:18,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:31:18,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:18,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:31:18,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:31:18,715 INFO L87 Difference]: Start difference. First operand 31834 states and 143004 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:19,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:19,552 INFO L93 Difference]: Finished difference Result 53630 states and 225777 transitions. [2022-01-18 04:31:19,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 04:31:19,552 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:31:19,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:19,774 INFO L225 Difference]: With dead ends: 53630 [2022-01-18 04:31:19,774 INFO L226 Difference]: Without dead ends: 53574 [2022-01-18 04:31:19,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-01-18 04:31:19,775 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 321 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:19,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 492 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:31:19,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53574 states. [2022-01-18 04:31:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53574 to 31834. [2022-01-18 04:31:20,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31834 states, 31833 states have (on average 4.492005151886407) internal successors, (142994), 31833 states have internal predecessors, (142994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:20,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31834 states to 31834 states and 142994 transitions. [2022-01-18 04:31:20,817 INFO L78 Accepts]: Start accepts. Automaton has 31834 states and 142994 transitions. Word has length 29 [2022-01-18 04:31:20,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:20,817 INFO L470 AbstractCegarLoop]: Abstraction has 31834 states and 142994 transitions. [2022-01-18 04:31:20,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:20,817 INFO L276 IsEmpty]: Start isEmpty. Operand 31834 states and 142994 transitions. [2022-01-18 04:31:20,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:20,897 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:20,898 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:20,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 04:31:21,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:21,099 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:21,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:21,099 INFO L85 PathProgramCache]: Analyzing trace with hash 172392223, now seen corresponding path program 22 times [2022-01-18 04:31:21,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:21,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053822140] [2022-01-18 04:31:21,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:21,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:21,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:21,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053822140] [2022-01-18 04:31:21,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053822140] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:21,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356653625] [2022-01-18 04:31:21,127 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:31:21,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:21,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:21,128 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:21,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 04:31:21,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:31:21,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:21,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:21,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:21,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:21,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:21,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356653625] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:21,291 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:21,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-01-18 04:31:21,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439965940] [2022-01-18 04:31:21,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:21,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:31:21,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:21,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:31:21,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:31:21,292 INFO L87 Difference]: Start difference. First operand 31834 states and 142994 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:22,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:22,239 INFO L93 Difference]: Finished difference Result 63201 states and 266555 transitions. [2022-01-18 04:31:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 04:31:22,240 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 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 29 [2022-01-18 04:31:22,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:22,506 INFO L225 Difference]: With dead ends: 63201 [2022-01-18 04:31:22,506 INFO L226 Difference]: Without dead ends: 63201 [2022-01-18 04:31:22,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2022-01-18 04:31:22,507 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 352 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:22,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 476 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:31:22,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63201 states. [2022-01-18 04:31:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63201 to 31971. [2022-01-18 04:31:23,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31971 states, 31970 states have (on average 4.490710040663122) internal successors, (143568), 31970 states have internal predecessors, (143568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:23,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31971 states to 31971 states and 143568 transitions. [2022-01-18 04:31:23,613 INFO L78 Accepts]: Start accepts. Automaton has 31971 states and 143568 transitions. Word has length 29 [2022-01-18 04:31:23,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:23,613 INFO L470 AbstractCegarLoop]: Abstraction has 31971 states and 143568 transitions. [2022-01-18 04:31:23,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 31971 states and 143568 transitions. [2022-01-18 04:31:23,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:23,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:23,696 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:23,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-01-18 04:31:23,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-01-18 04:31:23,896 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:23,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:23,897 INFO L85 PathProgramCache]: Analyzing trace with hash 619003099, now seen corresponding path program 23 times [2022-01-18 04:31:23,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:23,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061768916] [2022-01-18 04:31:23,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:23,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:23,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:23,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061768916] [2022-01-18 04:31:23,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061768916] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:23,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816005152] [2022-01-18 04:31:23,924 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:31:23,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:23,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:23,925 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:23,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 04:31:23,946 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 04:31:23,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:23,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:23,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:24,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:24,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816005152] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:24,064 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:24,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-01-18 04:31:24,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765523371] [2022-01-18 04:31:24,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:24,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:31:24,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:24,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:31:24,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:31:24,065 INFO L87 Difference]: Start difference. First operand 31971 states and 143568 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:24,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:24,819 INFO L93 Difference]: Finished difference Result 64043 states and 270031 transitions. [2022-01-18 04:31:24,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 04:31:24,820 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 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 29 [2022-01-18 04:31:24,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:25,084 INFO L225 Difference]: With dead ends: 64043 [2022-01-18 04:31:25,084 INFO L226 Difference]: Without dead ends: 64003 [2022-01-18 04:31:25,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2022-01-18 04:31:25,084 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 469 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:25,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 339 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:31:25,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64003 states. [2022-01-18 04:31:26,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64003 to 31981. [2022-01-18 04:31:26,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31981 states, 31980 states have (on average 4.49015009380863) internal successors, (143595), 31980 states have internal predecessors, (143595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:26,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31981 states to 31981 states and 143595 transitions. [2022-01-18 04:31:26,709 INFO L78 Accepts]: Start accepts. Automaton has 31981 states and 143595 transitions. Word has length 29 [2022-01-18 04:31:26,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:26,709 INFO L470 AbstractCegarLoop]: Abstraction has 31981 states and 143595 transitions. [2022-01-18 04:31:26,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:26,709 INFO L276 IsEmpty]: Start isEmpty. Operand 31981 states and 143595 transitions. [2022-01-18 04:31:26,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:26,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:26,800 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:26,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 04:31:27,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:27,001 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:27,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:27,001 INFO L85 PathProgramCache]: Analyzing trace with hash -96354205, now seen corresponding path program 24 times [2022-01-18 04:31:27,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:27,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448550327] [2022-01-18 04:31:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:27,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:27,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:27,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448550327] [2022-01-18 04:31:27,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448550327] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:27,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926691064] [2022-01-18 04:31:27,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:31:27,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:27,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:27,036 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:27,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 04:31:27,057 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 04:31:27,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:27,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:27,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:27,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:27,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926691064] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:27,197 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:27,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-01-18 04:31:27,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67722187] [2022-01-18 04:31:27,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:27,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:31:27,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:27,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:31:27,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:31:27,198 INFO L87 Difference]: Start difference. First operand 31981 states and 143595 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:28,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:28,351 INFO L93 Difference]: Finished difference Result 53971 states and 230205 transitions. [2022-01-18 04:31:28,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 04:31:28,352 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:31:28,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:28,593 INFO L225 Difference]: With dead ends: 53971 [2022-01-18 04:31:28,593 INFO L226 Difference]: Without dead ends: 53971 [2022-01-18 04:31:28,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 04:31:28,593 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 415 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:28,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 404 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:31:28,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53971 states. [2022-01-18 04:31:29,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53971 to 30565. [2022-01-18 04:31:29,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30565 states, 30564 states have (on average 4.463290145268944) internal successors, (136416), 30564 states have internal predecessors, (136416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30565 states to 30565 states and 136416 transitions. [2022-01-18 04:31:29,669 INFO L78 Accepts]: Start accepts. Automaton has 30565 states and 136416 transitions. Word has length 29 [2022-01-18 04:31:29,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:29,669 INFO L470 AbstractCegarLoop]: Abstraction has 30565 states and 136416 transitions. [2022-01-18 04:31:29,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:29,670 INFO L276 IsEmpty]: Start isEmpty. Operand 30565 states and 136416 transitions. [2022-01-18 04:31:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:29,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:29,746 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:29,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-18 04:31:29,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:29,947 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:29,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:29,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1931600191, now seen corresponding path program 25 times [2022-01-18 04:31:29,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:29,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971395869] [2022-01-18 04:31:29,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:29,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:29,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:29,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971395869] [2022-01-18 04:31:29,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971395869] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:29,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481563778] [2022-01-18 04:31:29,984 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:31:29,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:29,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:29,985 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:29,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 04:31:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:30,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:30,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:30,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:30,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481563778] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:30,147 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:30,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-01-18 04:31:30,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450919165] [2022-01-18 04:31:30,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:30,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:31:30,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:30,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:31:30,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:31:30,148 INFO L87 Difference]: Start difference. First operand 30565 states and 136416 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:31,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:31,158 INFO L93 Difference]: Finished difference Result 54874 states and 230950 transitions. [2022-01-18 04:31:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 04:31:31,158 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:31:31,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:31,378 INFO L225 Difference]: With dead ends: 54874 [2022-01-18 04:31:31,378 INFO L226 Difference]: Without dead ends: 54814 [2022-01-18 04:31:31,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:31:31,378 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 443 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:31,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 390 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:31:31,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54814 states. [2022-01-18 04:31:32,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54814 to 30989. [2022-01-18 04:31:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30989 states, 30988 states have (on average 4.461081709048664) internal successors, (138240), 30988 states have internal predecessors, (138240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:32,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30989 states to 30989 states and 138240 transitions. [2022-01-18 04:31:32,513 INFO L78 Accepts]: Start accepts. Automaton has 30989 states and 138240 transitions. Word has length 29 [2022-01-18 04:31:32,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:32,513 INFO L470 AbstractCegarLoop]: Abstraction has 30989 states and 138240 transitions. [2022-01-18 04:31:32,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand 30989 states and 138240 transitions. [2022-01-18 04:31:32,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:32,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:32,803 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:32,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-01-18 04:31:33,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-01-18 04:31:33,019 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:33,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:33,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1226629401, now seen corresponding path program 26 times [2022-01-18 04:31:33,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:33,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61741999] [2022-01-18 04:31:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:33,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:33,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:33,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61741999] [2022-01-18 04:31:33,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61741999] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:33,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780572765] [2022-01-18 04:31:33,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:31:33,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:33,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:33,051 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:33,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 04:31:33,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:31:33,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:33,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:33,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:33,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:33,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780572765] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:33,189 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:33,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-01-18 04:31:33,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599049365] [2022-01-18 04:31:33,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:33,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:31:33,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:33,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:31:33,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:31:33,190 INFO L87 Difference]: Start difference. First operand 30989 states and 138240 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:34,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:34,139 INFO L93 Difference]: Finished difference Result 67378 states and 285832 transitions. [2022-01-18 04:31:34,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 04:31:34,139 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:31:34,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:34,677 INFO L225 Difference]: With dead ends: 67378 [2022-01-18 04:31:34,677 INFO L226 Difference]: Without dead ends: 67378 [2022-01-18 04:31:34,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 04:31:34,678 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 535 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:34,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 346 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:31:34,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67378 states. [2022-01-18 04:31:35,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67378 to 29898. [2022-01-18 04:31:35,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29898 states, 29897 states have (on average 4.434090376960899) internal successors, (132566), 29897 states have internal predecessors, (132566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29898 states to 29898 states and 132566 transitions. [2022-01-18 04:31:35,825 INFO L78 Accepts]: Start accepts. Automaton has 29898 states and 132566 transitions. Word has length 29 [2022-01-18 04:31:35,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:35,825 INFO L470 AbstractCegarLoop]: Abstraction has 29898 states and 132566 transitions. [2022-01-18 04:31:35,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:35,825 INFO L276 IsEmpty]: Start isEmpty. Operand 29898 states and 132566 transitions. [2022-01-18 04:31:35,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:35,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:35,900 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:35,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 04:31:36,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-01-18 04:31:36,101 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:36,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:36,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1668470631, now seen corresponding path program 27 times [2022-01-18 04:31:36,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:36,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284497489] [2022-01-18 04:31:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:36,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:36,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:36,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284497489] [2022-01-18 04:31:36,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284497489] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:36,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782048260] [2022-01-18 04:31:36,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:31:36,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:36,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:36,129 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:36,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 04:31:36,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:31:36,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:36,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:36,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:36,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:36,268 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:36,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782048260] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:36,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:36,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-01-18 04:31:36,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395807782] [2022-01-18 04:31:36,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:36,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:31:36,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:36,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:31:36,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:31:36,269 INFO L87 Difference]: Start difference. First operand 29898 states and 132566 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:37,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:37,235 INFO L93 Difference]: Finished difference Result 44092 states and 184185 transitions. [2022-01-18 04:31:37,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 04:31:37,236 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:31:37,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:37,438 INFO L225 Difference]: With dead ends: 44092 [2022-01-18 04:31:37,438 INFO L226 Difference]: Without dead ends: 44008 [2022-01-18 04:31:37,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:31:37,439 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 350 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:37,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 469 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:31:37,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44008 states. [2022-01-18 04:31:38,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44008 to 28760. [2022-01-18 04:31:38,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28760 states, 28759 states have (on average 4.440905455683438) internal successors, (127716), 28759 states have internal predecessors, (127716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:38,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28760 states to 28760 states and 127716 transitions. [2022-01-18 04:31:38,419 INFO L78 Accepts]: Start accepts. Automaton has 28760 states and 127716 transitions. Word has length 29 [2022-01-18 04:31:38,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:38,419 INFO L470 AbstractCegarLoop]: Abstraction has 28760 states and 127716 transitions. [2022-01-18 04:31:38,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:38,419 INFO L276 IsEmpty]: Start isEmpty. Operand 28760 states and 127716 transitions. [2022-01-18 04:31:38,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:38,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:38,489 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:38,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-01-18 04:31:38,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-01-18 04:31:38,691 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:38,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:38,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1199527587, now seen corresponding path program 28 times [2022-01-18 04:31:38,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:38,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547802019] [2022-01-18 04:31:38,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:38,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:38,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:38,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547802019] [2022-01-18 04:31:38,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547802019] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:38,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932518754] [2022-01-18 04:31:38,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:31:38,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:38,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:38,728 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:38,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 04:31:38,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:31:38,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:38,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:38,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:38,827 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:38,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:38,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932518754] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:38,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:38,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:31:38,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219997164] [2022-01-18 04:31:38,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:38,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:31:38,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:38,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:31:38,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:31:38,886 INFO L87 Difference]: Start difference. First operand 28760 states and 127716 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:39,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:39,869 INFO L93 Difference]: Finished difference Result 60388 states and 252684 transitions. [2022-01-18 04:31:39,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 04:31:39,870 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:31:39,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:40,133 INFO L225 Difference]: With dead ends: 60388 [2022-01-18 04:31:40,133 INFO L226 Difference]: Without dead ends: 60388 [2022-01-18 04:31:40,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:31:40,133 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 535 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:40,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 232 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:31:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60388 states. [2022-01-18 04:31:41,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60388 to 30620. [2022-01-18 04:31:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30620 states, 30619 states have (on average 4.473431529442503) internal successors, (136972), 30619 states have internal predecessors, (136972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30620 states to 30620 states and 136972 transitions. [2022-01-18 04:31:41,255 INFO L78 Accepts]: Start accepts. Automaton has 30620 states and 136972 transitions. Word has length 29 [2022-01-18 04:31:41,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:41,255 INFO L470 AbstractCegarLoop]: Abstraction has 30620 states and 136972 transitions. [2022-01-18 04:31:41,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand 30620 states and 136972 transitions. [2022-01-18 04:31:41,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:41,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:41,332 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:41,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-01-18 04:31:41,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-01-18 04:31:41,533 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:41,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:41,533 INFO L85 PathProgramCache]: Analyzing trace with hash -308072669, now seen corresponding path program 29 times [2022-01-18 04:31:41,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:41,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867004737] [2022-01-18 04:31:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:41,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:41,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:41,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867004737] [2022-01-18 04:31:41,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867004737] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:41,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142757669] [2022-01-18 04:31:41,570 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:31:41,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:41,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:41,571 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:41,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 04:31:41,594 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:31:41,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:41,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:41,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:41,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:41,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142757669] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:41,718 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:41,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:31:41,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610325473] [2022-01-18 04:31:41,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:41,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:31:41,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:41,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:31:41,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:31:41,718 INFO L87 Difference]: Start difference. First operand 30620 states and 136972 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:42,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:42,539 INFO L93 Difference]: Finished difference Result 41767 states and 177773 transitions. [2022-01-18 04:31:42,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 04:31:42,539 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:31:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:42,713 INFO L225 Difference]: With dead ends: 41767 [2022-01-18 04:31:42,713 INFO L226 Difference]: Without dead ends: 41739 [2022-01-18 04:31:42,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-01-18 04:31:42,714 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 224 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:42,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 380 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:31:42,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41739 states. [2022-01-18 04:31:43,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41739 to 30609. [2022-01-18 04:31:43,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30609 states, 30608 states have (on average 4.473078933612127) internal successors, (136912), 30608 states have internal predecessors, (136912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30609 states to 30609 states and 136912 transitions. [2022-01-18 04:31:43,768 INFO L78 Accepts]: Start accepts. Automaton has 30609 states and 136912 transitions. Word has length 29 [2022-01-18 04:31:43,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:43,768 INFO L470 AbstractCegarLoop]: Abstraction has 30609 states and 136912 transitions. [2022-01-18 04:31:43,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:43,768 INFO L276 IsEmpty]: Start isEmpty. Operand 30609 states and 136912 transitions. [2022-01-18 04:31:43,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:43,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:43,842 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:43,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-01-18 04:31:44,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-18 04:31:44,043 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:44,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:44,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1367025249, now seen corresponding path program 30 times [2022-01-18 04:31:44,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:44,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623797054] [2022-01-18 04:31:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:44,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:44,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:44,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623797054] [2022-01-18 04:31:44,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623797054] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:44,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12351999] [2022-01-18 04:31:44,073 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:31:44,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:44,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:44,074 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:44,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 04:31:44,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:31:44,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:44,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:44,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:44,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:44,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12351999] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:44,213 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:44,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:31:44,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82270069] [2022-01-18 04:31:44,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:44,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:31:44,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:44,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:31:44,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:31:44,214 INFO L87 Difference]: Start difference. First operand 30609 states and 136912 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:45,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:45,190 INFO L93 Difference]: Finished difference Result 47385 states and 201554 transitions. [2022-01-18 04:31:45,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 04:31:45,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:31:45,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:45,376 INFO L225 Difference]: With dead ends: 47385 [2022-01-18 04:31:45,376 INFO L226 Difference]: Without dead ends: 47385 [2022-01-18 04:31:45,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2022-01-18 04:31:45,377 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 279 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:45,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 383 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:31:45,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47385 states. [2022-01-18 04:31:46,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47385 to 30746. [2022-01-18 04:31:46,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30746 states, 30745 states have (on average 4.471816555537486) internal successors, (137486), 30745 states have internal predecessors, (137486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:46,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30746 states to 30746 states and 137486 transitions. [2022-01-18 04:31:46,431 INFO L78 Accepts]: Start accepts. Automaton has 30746 states and 137486 transitions. Word has length 29 [2022-01-18 04:31:46,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:46,431 INFO L470 AbstractCegarLoop]: Abstraction has 30746 states and 137486 transitions. [2022-01-18 04:31:46,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:46,431 INFO L276 IsEmpty]: Start isEmpty. Operand 30746 states and 137486 transitions. [2022-01-18 04:31:46,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:46,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:46,508 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:46,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-01-18 04:31:46,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:46,708 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:46,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:46,709 INFO L85 PathProgramCache]: Analyzing trace with hash -920414373, now seen corresponding path program 31 times [2022-01-18 04:31:46,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:46,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048328981] [2022-01-18 04:31:46,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:46,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:46,731 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:46,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:46,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048328981] [2022-01-18 04:31:46,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048328981] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:46,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485206417] [2022-01-18 04:31:46,732 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:31:46,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:46,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:46,733 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:46,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 04:31:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:46,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:46,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:46,827 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:46,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:46,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485206417] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:46,883 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:46,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:31:46,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611365804] [2022-01-18 04:31:46,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:46,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:31:46,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:46,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:31:46,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:31:46,884 INFO L87 Difference]: Start difference. First operand 30746 states and 137486 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:47,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:47,900 INFO L93 Difference]: Finished difference Result 57968 states and 241203 transitions. [2022-01-18 04:31:47,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 04:31:47,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:31:47,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:48,168 INFO L225 Difference]: With dead ends: 57968 [2022-01-18 04:31:48,168 INFO L226 Difference]: Without dead ends: 57948 [2022-01-18 04:31:48,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-01-18 04:31:48,168 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 523 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:48,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 289 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:31:48,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57948 states. [2022-01-18 04:31:49,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57948 to 30746. [2022-01-18 04:31:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30746 states, 30745 states have (on average 4.471491299398276) internal successors, (137476), 30745 states have internal predecessors, (137476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30746 states to 30746 states and 137476 transitions. [2022-01-18 04:31:49,400 INFO L78 Accepts]: Start accepts. Automaton has 30746 states and 137476 transitions. Word has length 29 [2022-01-18 04:31:49,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:49,400 INFO L470 AbstractCegarLoop]: Abstraction has 30746 states and 137476 transitions. [2022-01-18 04:31:49,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:49,400 INFO L276 IsEmpty]: Start isEmpty. Operand 30746 states and 137476 transitions. [2022-01-18 04:31:49,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:49,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:49,477 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:49,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-01-18 04:31:49,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:49,677 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:49,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:49,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1635771677, now seen corresponding path program 32 times [2022-01-18 04:31:49,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:49,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611405843] [2022-01-18 04:31:49,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:49,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:49,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:49,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611405843] [2022-01-18 04:31:49,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611405843] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:49,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241272009] [2022-01-18 04:31:49,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:31:49,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:49,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:49,717 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:49,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 04:31:49,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:31:49,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:49,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:49,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:49,824 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:49,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:49,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241272009] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:49,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:49,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-01-18 04:31:49,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434550246] [2022-01-18 04:31:49,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:49,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:31:49,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:49,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:31:49,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:31:49,879 INFO L87 Difference]: Start difference. First operand 30746 states and 137476 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:51,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:51,590 INFO L93 Difference]: Finished difference Result 66647 states and 285464 transitions. [2022-01-18 04:31:51,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 04:31:51,590 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:31:51,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:51,884 INFO L225 Difference]: With dead ends: 66647 [2022-01-18 04:31:51,884 INFO L226 Difference]: Without dead ends: 66647 [2022-01-18 04:31:51,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=565, Invalid=2191, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 04:31:51,884 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 427 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:51,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 758 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:31:51,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66647 states. [2022-01-18 04:31:52,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66647 to 31294. [2022-01-18 04:31:53,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31294 states, 31293 states have (on average 4.46655801616975) internal successors, (139772), 31293 states have internal predecessors, (139772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:53,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31294 states to 31294 states and 139772 transitions. [2022-01-18 04:31:53,144 INFO L78 Accepts]: Start accepts. Automaton has 31294 states and 139772 transitions. Word has length 29 [2022-01-18 04:31:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:53,144 INFO L470 AbstractCegarLoop]: Abstraction has 31294 states and 139772 transitions. [2022-01-18 04:31:53,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:53,144 INFO L276 IsEmpty]: Start isEmpty. Operand 31294 states and 139772 transitions. [2022-01-18 04:31:53,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:53,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:53,223 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:53,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-01-18 04:31:53,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:53,431 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:53,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash 823949633, now seen corresponding path program 33 times [2022-01-18 04:31:53,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:53,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342638166] [2022-01-18 04:31:53,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:53,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:53,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:53,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342638166] [2022-01-18 04:31:53,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342638166] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:53,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389240311] [2022-01-18 04:31:53,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:31:53,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:53,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:53,463 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:53,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 04:31:53,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:31:53,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:53,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:53,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:53,573 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:53,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:31:53,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389240311] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:53,630 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:53,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-01-18 04:31:53,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877338745] [2022-01-18 04:31:53,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:53,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:31:53,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:53,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:31:53,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:31:53,631 INFO L87 Difference]: Start difference. First operand 31294 states and 139772 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:54,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:54,790 INFO L93 Difference]: Finished difference Result 67722 states and 279320 transitions. [2022-01-18 04:31:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 04:31:54,791 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:31:54,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:55,117 INFO L225 Difference]: With dead ends: 67722 [2022-01-18 04:31:55,117 INFO L226 Difference]: Without dead ends: 67522 [2022-01-18 04:31:55,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 04:31:55,118 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 584 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:55,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 383 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:31:55,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67522 states. [2022-01-18 04:31:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67522 to 31300. [2022-01-18 04:31:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31300 states, 31299 states have (on average 4.465414230486597) internal successors, (139763), 31299 states have internal predecessors, (139763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:56,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31300 states to 31300 states and 139763 transitions. [2022-01-18 04:31:56,484 INFO L78 Accepts]: Start accepts. Automaton has 31300 states and 139763 transitions. Word has length 29 [2022-01-18 04:31:56,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:56,484 INFO L470 AbstractCegarLoop]: Abstraction has 31300 states and 139763 transitions. [2022-01-18 04:31:56,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:56,484 INFO L276 IsEmpty]: Start isEmpty. Operand 31300 states and 139763 transitions. [2022-01-18 04:31:56,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:56,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:56,563 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:56,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-01-18 04:31:56,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:56,764 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:31:56,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:31:56,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1685460577, now seen corresponding path program 34 times [2022-01-18 04:31:56,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:31:56,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613114186] [2022-01-18 04:31:56,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:31:56,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:31:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:31:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:56,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:31:56,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613114186] [2022-01-18 04:31:56,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613114186] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:31:56,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701035161] [2022-01-18 04:31:56,798 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:31:56,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:31:56,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:31:56,799 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:31:56,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 04:31:56,820 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:31:56,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:31:56,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:31:56,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:31:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:56,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:31:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:31:56,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701035161] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:31:56,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:31:56,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 04:31:56,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095580638] [2022-01-18 04:31:56,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:31:56,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:31:56,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:31:56,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:31:56,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:31:56,955 INFO L87 Difference]: Start difference. First operand 31300 states and 139763 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:58,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:31:58,397 INFO L93 Difference]: Finished difference Result 57331 states and 248639 transitions. [2022-01-18 04:31:58,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 04:31:58,397 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:31:58,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:31:58,647 INFO L225 Difference]: With dead ends: 57331 [2022-01-18 04:31:58,647 INFO L226 Difference]: Without dead ends: 57311 [2022-01-18 04:31:58,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 04:31:58,648 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 261 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:31:58,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 611 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:31:58,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57311 states. [2022-01-18 04:31:59,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57311 to 31991. [2022-01-18 04:31:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31991 states, 31990 states have (on average 4.448671459831197) internal successors, (142313), 31990 states have internal predecessors, (142313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:59,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31991 states to 31991 states and 142313 transitions. [2022-01-18 04:31:59,813 INFO L78 Accepts]: Start accepts. Automaton has 31991 states and 142313 transitions. Word has length 29 [2022-01-18 04:31:59,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:31:59,813 INFO L470 AbstractCegarLoop]: Abstraction has 31991 states and 142313 transitions. [2022-01-18 04:31:59,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:31:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 31991 states and 142313 transitions. [2022-01-18 04:31:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:31:59,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:31:59,895 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:31:59,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-01-18 04:32:00,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-01-18 04:32:00,096 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:32:00,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:32:00,096 INFO L85 PathProgramCache]: Analyzing trace with hash 620018621, now seen corresponding path program 35 times [2022-01-18 04:32:00,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:32:00,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819477508] [2022-01-18 04:32:00,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:32:00,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:32:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:00,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:32:00,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819477508] [2022-01-18 04:32:00,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819477508] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:32:00,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613631236] [2022-01-18 04:32:00,126 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:32:00,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:00,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:32:00,127 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:32:00,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 04:32:00,148 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:32:00,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:32:00,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:32:00,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:32:00,212 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:00,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:32:00,259 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:00,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613631236] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:32:00,259 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:32:00,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 04:32:00,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293556909] [2022-01-18 04:32:00,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:32:00,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:32:00,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:32:00,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:32:00,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:32:00,260 INFO L87 Difference]: Start difference. First operand 31991 states and 142313 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:01,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:32:01,321 INFO L93 Difference]: Finished difference Result 56534 states and 233979 transitions. [2022-01-18 04:32:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 04:32:01,321 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:32:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:32:01,575 INFO L225 Difference]: With dead ends: 56534 [2022-01-18 04:32:01,575 INFO L226 Difference]: Without dead ends: 56434 [2022-01-18 04:32:01,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 04:32:01,575 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 545 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:32:01,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 338 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:32:01,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56434 states. [2022-01-18 04:32:02,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56434 to 32469. [2022-01-18 04:32:02,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32469 states, 32468 states have (on average 4.436368116299125) internal successors, (144040), 32468 states have internal predecessors, (144040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32469 states to 32469 states and 144040 transitions. [2022-01-18 04:32:02,837 INFO L78 Accepts]: Start accepts. Automaton has 32469 states and 144040 transitions. Word has length 29 [2022-01-18 04:32:02,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:32:02,837 INFO L470 AbstractCegarLoop]: Abstraction has 32469 states and 144040 transitions. [2022-01-18 04:32:02,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:02,837 INFO L276 IsEmpty]: Start isEmpty. Operand 32469 states and 144040 transitions. [2022-01-18 04:32:02,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:32:02,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:32:02,917 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:32:02,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-01-18 04:32:03,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-01-18 04:32:03,118 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:32:03,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:32:03,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1534820831, now seen corresponding path program 16 times [2022-01-18 04:32:03,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:32:03,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597070553] [2022-01-18 04:32:03,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:32:03,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:32:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:03,153 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:03,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:32:03,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597070553] [2022-01-18 04:32:03,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597070553] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:32:03,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86933350] [2022-01-18 04:32:03,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:32:03,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:03,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:32:03,155 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:32:03,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 04:32:03,178 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:32:03,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:32:03,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:32:03,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:32:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:03,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:32:03,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:03,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86933350] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:32:03,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:32:03,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 04:32:03,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005469729] [2022-01-18 04:32:03,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:32:03,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:32:03,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:32:03,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:32:03,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:32:03,303 INFO L87 Difference]: Start difference. First operand 32469 states and 144040 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:04,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:32:04,978 INFO L93 Difference]: Finished difference Result 80270 states and 344343 transitions. [2022-01-18 04:32:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 04:32:04,979 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:32:04,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:32:05,341 INFO L225 Difference]: With dead ends: 80270 [2022-01-18 04:32:05,341 INFO L226 Difference]: Without dead ends: 80270 [2022-01-18 04:32:05,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 04:32:05,342 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 255 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:32:05,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 701 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:32:05,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80270 states. [2022-01-18 04:32:06,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80270 to 31572. [2022-01-18 04:32:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31572 states, 31571 states have (on average 4.398910392448767) internal successors, (138878), 31571 states have internal predecessors, (138878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:06,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31572 states to 31572 states and 138878 transitions. [2022-01-18 04:32:06,732 INFO L78 Accepts]: Start accepts. Automaton has 31572 states and 138878 transitions. Word has length 29 [2022-01-18 04:32:06,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:32:06,733 INFO L470 AbstractCegarLoop]: Abstraction has 31572 states and 138878 transitions. [2022-01-18 04:32:06,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:06,733 INFO L276 IsEmpty]: Start isEmpty. Operand 31572 states and 138878 transitions. [2022-01-18 04:32:06,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:32:06,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:32:06,812 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:32:06,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-01-18 04:32:07,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-01-18 04:32:07,013 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:32:07,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:32:07,013 INFO L85 PathProgramCache]: Analyzing trace with hash 285954147, now seen corresponding path program 17 times [2022-01-18 04:32:07,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:32:07,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304429697] [2022-01-18 04:32:07,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:32:07,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:32:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:07,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:32:07,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304429697] [2022-01-18 04:32:07,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304429697] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:32:07,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942654626] [2022-01-18 04:32:07,051 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:32:07,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:07,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:32:07,054 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:32:07,080 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:32:07,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:32:07,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 04:32:07,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:32:07,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:32:07,143 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:07,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:32:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:07,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942654626] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:32:07,207 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:32:07,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 04:32:07,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494739991] [2022-01-18 04:32:07,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:32:07,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:32:07,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:32:07,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:32:07,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:32:07,210 INFO L87 Difference]: Start difference. First operand 31572 states and 138878 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:08,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:32:08,332 INFO L93 Difference]: Finished difference Result 65127 states and 271613 transitions. [2022-01-18 04:32:08,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 04:32:08,333 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:32:08,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:32:08,635 INFO L225 Difference]: With dead ends: 65127 [2022-01-18 04:32:08,635 INFO L226 Difference]: Without dead ends: 64887 [2022-01-18 04:32:08,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 04:32:08,639 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 455 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:32:08,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 316 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:32:08,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64887 states. [2022-01-18 04:32:09,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64887 to 39278. [2022-01-18 04:32:09,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39278 states, 39277 states have (on average 4.461567838684217) internal successors, (175237), 39277 states have internal predecessors, (175237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39278 states to 39278 states and 175237 transitions. [2022-01-18 04:32:10,066 INFO L78 Accepts]: Start accepts. Automaton has 39278 states and 175237 transitions. Word has length 29 [2022-01-18 04:32:10,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:32:10,066 INFO L470 AbstractCegarLoop]: Abstraction has 39278 states and 175237 transitions. [2022-01-18 04:32:10,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:10,066 INFO L276 IsEmpty]: Start isEmpty. Operand 39278 states and 175237 transitions. [2022-01-18 04:32:10,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:32:10,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:32:10,167 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:32:10,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-01-18 04:32:10,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:10,367 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:32:10,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:32:10,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1167414617, now seen corresponding path program 18 times [2022-01-18 04:32:10,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:32:10,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113220011] [2022-01-18 04:32:10,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:32:10,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:32:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:10,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:32:10,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113220011] [2022-01-18 04:32:10,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113220011] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:32:10,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511144747] [2022-01-18 04:32:10,393 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:32:10,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:10,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:32:10,394 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:32:10,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 04:32:10,415 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:32:10,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:32:10,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:32:10,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:32:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:10,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:32:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:10,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511144747] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:32:10,543 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:32:10,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:32:10,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203788077] [2022-01-18 04:32:10,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:32:10,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:32:10,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:32:10,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:32:10,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:32:10,544 INFO L87 Difference]: Start difference. First operand 39278 states and 175237 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:11,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:32:11,614 INFO L93 Difference]: Finished difference Result 68394 states and 287238 transitions. [2022-01-18 04:32:11,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 04:32:11,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:32:11,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:32:11,908 INFO L225 Difference]: With dead ends: 68394 [2022-01-18 04:32:11,908 INFO L226 Difference]: Without dead ends: 68394 [2022-01-18 04:32:11,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:32:11,908 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 519 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:32:11,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 253 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:32:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68394 states. [2022-01-18 04:32:13,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68394 to 39026. [2022-01-18 04:32:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39026 states, 39025 states have (on average 4.450608584240872) internal successors, (173685), 39025 states have internal predecessors, (173685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39026 states to 39026 states and 173685 transitions. [2022-01-18 04:32:13,349 INFO L78 Accepts]: Start accepts. Automaton has 39026 states and 173685 transitions. Word has length 29 [2022-01-18 04:32:13,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:32:13,349 INFO L470 AbstractCegarLoop]: Abstraction has 39026 states and 173685 transitions. [2022-01-18 04:32:13,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:13,349 INFO L276 IsEmpty]: Start isEmpty. Operand 39026 states and 173685 transitions. [2022-01-18 04:32:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:32:13,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:32:13,449 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:32:13,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-01-18 04:32:13,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:13,651 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:32:13,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:32:13,652 INFO L85 PathProgramCache]: Analyzing trace with hash -177947937, now seen corresponding path program 19 times [2022-01-18 04:32:13,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:32:13,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074378215] [2022-01-18 04:32:13,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:32:13,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:32:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:13,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:32:13,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074378215] [2022-01-18 04:32:13,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074378215] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:32:13,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558474243] [2022-01-18 04:32:13,689 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:32:13,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:13,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:32:13,690 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:32:13,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 04:32:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:13,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:32:13,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:32:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:13,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:32:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:13,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558474243] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:32:13,823 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:32:13,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:32:13,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025829678] [2022-01-18 04:32:13,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:32:13,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:32:13,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:32:13,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:32:13,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:32:13,823 INFO L87 Difference]: Start difference. First operand 39026 states and 173685 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:14,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:32:14,776 INFO L93 Difference]: Finished difference Result 49591 states and 212155 transitions. [2022-01-18 04:32:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 04:32:14,777 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:32:14,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:32:15,000 INFO L225 Difference]: With dead ends: 49591 [2022-01-18 04:32:15,000 INFO L226 Difference]: Without dead ends: 49566 [2022-01-18 04:32:15,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-01-18 04:32:15,001 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 173 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:32:15,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 409 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:32:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49566 states. [2022-01-18 04:32:16,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49566 to 39082. [2022-01-18 04:32:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39082 states, 39081 states have (on average 4.449553491466442) internal successors, (173893), 39081 states have internal predecessors, (173893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39082 states to 39082 states and 173893 transitions. [2022-01-18 04:32:16,347 INFO L78 Accepts]: Start accepts. Automaton has 39082 states and 173893 transitions. Word has length 29 [2022-01-18 04:32:16,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:32:16,347 INFO L470 AbstractCegarLoop]: Abstraction has 39082 states and 173893 transitions. [2022-01-18 04:32:16,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:16,348 INFO L276 IsEmpty]: Start isEmpty. Operand 39082 states and 173893 transitions. [2022-01-18 04:32:16,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:32:16,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:32:16,448 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:32:16,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-01-18 04:32:16,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-18 04:32:16,649 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:32:16,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:32:16,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1432006963, now seen corresponding path program 20 times [2022-01-18 04:32:16,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:32:16,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045295918] [2022-01-18 04:32:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:32:16,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:32:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:16,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:16,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:32:16,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045295918] [2022-01-18 04:32:16,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045295918] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:32:16,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604936432] [2022-01-18 04:32:16,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:32:16,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:16,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:32:16,673 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:32:16,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 04:32:16,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:32:16,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:32:16,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:32:16,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:32:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:16,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:32:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:32:16,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604936432] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:32:16,812 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:32:16,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-01-18 04:32:16,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795695161] [2022-01-18 04:32:16,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:32:16,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:32:16,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:32:16,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:32:16,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:32:16,813 INFO L87 Difference]: Start difference. First operand 39082 states and 173893 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:18,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:32:18,276 INFO L93 Difference]: Finished difference Result 122970 states and 525591 transitions. [2022-01-18 04:32:18,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 04:32:18,276 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:32:18,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:32:18,894 INFO L225 Difference]: With dead ends: 122970 [2022-01-18 04:32:18,894 INFO L226 Difference]: Without dead ends: 122970 [2022-01-18 04:32:18,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-01-18 04:32:18,894 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 495 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:32:18,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 258 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:32:19,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122970 states. [2022-01-18 04:32:21,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122970 to 51969. [2022-01-18 04:32:21,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51969 states, 51968 states have (on average 4.575142395320197) internal successors, (237761), 51968 states have internal predecessors, (237761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51969 states to 51969 states and 237761 transitions. [2022-01-18 04:32:21,487 INFO L78 Accepts]: Start accepts. Automaton has 51969 states and 237761 transitions. Word has length 29 [2022-01-18 04:32:21,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:32:21,487 INFO L470 AbstractCegarLoop]: Abstraction has 51969 states and 237761 transitions. [2022-01-18 04:32:21,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:21,487 INFO L276 IsEmpty]: Start isEmpty. Operand 51969 states and 237761 transitions. [2022-01-18 04:32:21,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:32:21,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:32:21,624 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:32:21,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-01-18 04:32:21,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:21,825 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:32:21,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:32:21,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1669970355, now seen corresponding path program 21 times [2022-01-18 04:32:21,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:32:21,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834146991] [2022-01-18 04:32:21,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:32:21,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:32:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:21,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:32:21,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834146991] [2022-01-18 04:32:21,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834146991] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:32:21,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758543197] [2022-01-18 04:32:21,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:32:21,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:21,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:32:21,856 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:32:21,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 04:32:21,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:32:21,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:32:21,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:32:21,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:32:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:21,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:32:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:32:21,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758543197] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:32:21,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:32:21,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-01-18 04:32:21,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227423362] [2022-01-18 04:32:21,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:32:21,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:32:21,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:32:21,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:32:21,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:32:21,996 INFO L87 Difference]: Start difference. First operand 51969 states and 237761 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:23,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:32:23,351 INFO L93 Difference]: Finished difference Result 83465 states and 358962 transitions. [2022-01-18 04:32:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 04:32:23,352 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:32:23,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:32:23,735 INFO L225 Difference]: With dead ends: 83465 [2022-01-18 04:32:23,735 INFO L226 Difference]: Without dead ends: 83417 [2022-01-18 04:32:23,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-01-18 04:32:23,735 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 312 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:32:23,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 492 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:32:23,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83417 states. [2022-01-18 04:32:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83417 to 51969. [2022-01-18 04:32:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51969 states, 51968 states have (on average 4.574911483990148) internal successors, (237749), 51968 states have internal predecessors, (237749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:25,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51969 states to 51969 states and 237749 transitions. [2022-01-18 04:32:25,985 INFO L78 Accepts]: Start accepts. Automaton has 51969 states and 237749 transitions. Word has length 29 [2022-01-18 04:32:25,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:32:25,985 INFO L470 AbstractCegarLoop]: Abstraction has 51969 states and 237749 transitions. [2022-01-18 04:32:25,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:25,985 INFO L276 IsEmpty]: Start isEmpty. Operand 51969 states and 237749 transitions. [2022-01-18 04:32:26,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:32:26,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:32:26,135 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:32:26,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-01-18 04:32:26,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:26,336 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:32:26,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:32:26,336 INFO L85 PathProgramCache]: Analyzing trace with hash 944500301, now seen corresponding path program 22 times [2022-01-18 04:32:26,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:32:26,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929090003] [2022-01-18 04:32:26,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:32:26,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:32:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:32:26,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:32:26,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929090003] [2022-01-18 04:32:26,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929090003] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:32:26,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257074805] [2022-01-18 04:32:26,361 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:32:26,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:26,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:32:26,362 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:32:26,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 04:32:26,383 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:32:26,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:32:26,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:32:26,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:32:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:26,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:32:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:32:26,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257074805] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:32:26,497 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:32:26,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-01-18 04:32:26,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659043251] [2022-01-18 04:32:26,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:32:26,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:32:26,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:32:26,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:32:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:32:26,508 INFO L87 Difference]: Start difference. First operand 51969 states and 237749 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:27,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:32:27,628 INFO L93 Difference]: Finished difference Result 99551 states and 429052 transitions. [2022-01-18 04:32:27,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 04:32:27,628 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:32:27,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:32:28,843 INFO L225 Difference]: With dead ends: 99551 [2022-01-18 04:32:28,844 INFO L226 Difference]: Without dead ends: 99551 [2022-01-18 04:32:28,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2022-01-18 04:32:28,844 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 440 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:32:28,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 390 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:32:28,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99551 states. [2022-01-18 04:32:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99551 to 52207. [2022-01-18 04:32:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52207 states, 52206 states have (on average 4.573401524728959) internal successors, (238759), 52206 states have internal predecessors, (238759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:30,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52207 states to 52207 states and 238759 transitions. [2022-01-18 04:32:30,918 INFO L78 Accepts]: Start accepts. Automaton has 52207 states and 238759 transitions. Word has length 29 [2022-01-18 04:32:30,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:32:30,918 INFO L470 AbstractCegarLoop]: Abstraction has 52207 states and 238759 transitions. [2022-01-18 04:32:30,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:30,919 INFO L276 IsEmpty]: Start isEmpty. Operand 52207 states and 238759 transitions. [2022-01-18 04:32:31,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:32:31,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:32:31,065 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:32:31,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-01-18 04:32:31,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-01-18 04:32:31,266 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:32:31,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:32:31,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1933966981, now seen corresponding path program 23 times [2022-01-18 04:32:31,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:32:31,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453958831] [2022-01-18 04:32:31,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:32:31,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:32:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:32:31,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:32:31,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453958831] [2022-01-18 04:32:31,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453958831] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:32:31,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675471403] [2022-01-18 04:32:31,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:32:31,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:31,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:32:31,297 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:32:31,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 04:32:31,319 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 04:32:31,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:32:31,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:32:31,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:32:31,394 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:31,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:32:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:32:31,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675471403] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:32:31,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:32:31,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 10 [2022-01-18 04:32:31,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704901286] [2022-01-18 04:32:31,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:32:31,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:32:31,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:32:31,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:32:31,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:32:31,444 INFO L87 Difference]: Start difference. First operand 52207 states and 238759 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:32,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:32:32,824 INFO L93 Difference]: Finished difference Result 93968 states and 402691 transitions. [2022-01-18 04:32:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 04:32:32,825 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:32:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:32:33,247 INFO L225 Difference]: With dead ends: 93968 [2022-01-18 04:32:33,247 INFO L226 Difference]: Without dead ends: 93918 [2022-01-18 04:32:33,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2022-01-18 04:32:33,247 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 414 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:32:33,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 319 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:32:33,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93918 states. [2022-01-18 04:32:35,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93918 to 52209. [2022-01-18 04:32:35,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52209 states, 52208 states have (on average 4.573207171314741) internal successors, (238758), 52208 states have internal predecessors, (238758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:35,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52209 states to 52209 states and 238758 transitions. [2022-01-18 04:32:35,683 INFO L78 Accepts]: Start accepts. Automaton has 52209 states and 238758 transitions. Word has length 29 [2022-01-18 04:32:35,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:32:35,683 INFO L470 AbstractCegarLoop]: Abstraction has 52209 states and 238758 transitions. [2022-01-18 04:32:35,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:35,683 INFO L276 IsEmpty]: Start isEmpty. Operand 52209 states and 238758 transitions. [2022-01-18 04:32:35,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:32:35,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:32:35,832 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:32:35,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-01-18 04:32:36,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:36,033 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:32:36,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:32:36,033 INFO L85 PathProgramCache]: Analyzing trace with hash 70245641, now seen corresponding path program 24 times [2022-01-18 04:32:36,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:32:36,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142807682] [2022-01-18 04:32:36,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:32:36,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:32:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:36,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:32:36,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142807682] [2022-01-18 04:32:36,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142807682] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:32:36,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389464682] [2022-01-18 04:32:36,068 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:32:36,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:36,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:32:36,069 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:32:36,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 04:32:36,091 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 04:32:36,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:32:36,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:32:36,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:32:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:36,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:32:36,221 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:36,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389464682] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:32:36,221 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:32:36,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-01-18 04:32:36,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248900626] [2022-01-18 04:32:36,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:32:36,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:32:36,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:32:36,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:32:36,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:32:36,222 INFO L87 Difference]: Start difference. First operand 52209 states and 238758 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:37,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:32:37,759 INFO L93 Difference]: Finished difference Result 86954 states and 378394 transitions. [2022-01-18 04:32:37,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 04:32:37,759 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:32:37,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:32:38,183 INFO L225 Difference]: With dead ends: 86954 [2022-01-18 04:32:38,183 INFO L226 Difference]: Without dead ends: 86954 [2022-01-18 04:32:38,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 04:32:38,183 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 416 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:32:38,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 419 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:32:38,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86954 states. [2022-01-18 04:32:39,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86954 to 49798. [2022-01-18 04:32:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49798 states, 49797 states have (on average 4.546077072916039) internal successors, (226381), 49797 states have internal predecessors, (226381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:40,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49798 states to 49798 states and 226381 transitions. [2022-01-18 04:32:40,042 INFO L78 Accepts]: Start accepts. Automaton has 49798 states and 226381 transitions. Word has length 29 [2022-01-18 04:32:40,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:32:40,042 INFO L470 AbstractCegarLoop]: Abstraction has 49798 states and 226381 transitions. [2022-01-18 04:32:40,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:40,042 INFO L276 IsEmpty]: Start isEmpty. Operand 49798 states and 226381 transitions. [2022-01-18 04:32:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:32:40,170 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:32:40,170 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:32:40,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-01-18 04:32:40,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-01-18 04:32:40,371 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:32:40,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:32:40,372 INFO L85 PathProgramCache]: Analyzing trace with hash 936509879, now seen corresponding path program 25 times [2022-01-18 04:32:40,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:32:40,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346936161] [2022-01-18 04:32:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:32:40,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:32:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:40,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:32:40,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346936161] [2022-01-18 04:32:40,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346936161] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:32:40,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951407560] [2022-01-18 04:32:40,398 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:32:40,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:40,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:32:40,401 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:32:40,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 04:32:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:40,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:32:40,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:32:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:40,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:32:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:40,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951407560] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:32:40,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:32:40,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-01-18 04:32:40,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92979672] [2022-01-18 04:32:40,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:32:40,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:32:40,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:32:40,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:32:40,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:32:40,537 INFO L87 Difference]: Start difference. First operand 49798 states and 226381 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:41,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:32:41,794 INFO L93 Difference]: Finished difference Result 80496 states and 344078 transitions. [2022-01-18 04:32:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 04:32:41,795 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:32:41,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:32:42,139 INFO L225 Difference]: With dead ends: 80496 [2022-01-18 04:32:42,139 INFO L226 Difference]: Without dead ends: 80421 [2022-01-18 04:32:42,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:32:42,140 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 376 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:32:42,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 379 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:32:42,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80421 states. [2022-01-18 04:32:43,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80421 to 50365. [2022-01-18 04:32:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50365 states, 50364 states have (on average 4.546441902946549) internal successors, (228977), 50364 states have internal predecessors, (228977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50365 states to 50365 states and 228977 transitions. [2022-01-18 04:32:44,303 INFO L78 Accepts]: Start accepts. Automaton has 50365 states and 228977 transitions. Word has length 29 [2022-01-18 04:32:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:32:44,303 INFO L470 AbstractCegarLoop]: Abstraction has 50365 states and 228977 transitions. [2022-01-18 04:32:44,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:44,303 INFO L276 IsEmpty]: Start isEmpty. Operand 50365 states and 228977 transitions. [2022-01-18 04:32:44,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:32:44,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:32:44,436 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:32:44,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-01-18 04:32:44,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-01-18 04:32:44,637 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:32:44,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:32:44,637 INFO L85 PathProgramCache]: Analyzing trace with hash -468416107, now seen corresponding path program 26 times [2022-01-18 04:32:44,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:32:44,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498979283] [2022-01-18 04:32:44,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:32:44,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:32:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:44,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:32:44,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498979283] [2022-01-18 04:32:44,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498979283] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:32:44,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342765074] [2022-01-18 04:32:44,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:32:44,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:44,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:32:44,665 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:32:44,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 04:32:44,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:32:44,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:32:44,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:32:44,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:32:44,765 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:44,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:32:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:32:44,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342765074] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:32:44,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:32:44,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-01-18 04:32:44,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587876828] [2022-01-18 04:32:44,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:32:44,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:32:44,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:32:44,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:32:44,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:32:44,810 INFO L87 Difference]: Start difference. First operand 50365 states and 228977 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:46,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:32:46,391 INFO L93 Difference]: Finished difference Result 99418 states and 427978 transitions. [2022-01-18 04:32:46,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 04:32:46,392 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:32:46,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:32:46,906 INFO L225 Difference]: With dead ends: 99418 [2022-01-18 04:32:46,906 INFO L226 Difference]: Without dead ends: 99418 [2022-01-18 04:32:46,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 04:32:46,906 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 415 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:32:46,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 348 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:32:47,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99418 states. [2022-01-18 04:32:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99418 to 48495. [2022-01-18 04:32:48,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48495 states, 48494 states have (on average 4.518827071390275) internal successors, (219136), 48494 states have internal predecessors, (219136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:48,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48495 states to 48495 states and 219136 transitions. [2022-01-18 04:32:48,906 INFO L78 Accepts]: Start accepts. Automaton has 48495 states and 219136 transitions. Word has length 29 [2022-01-18 04:32:48,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:32:48,906 INFO L470 AbstractCegarLoop]: Abstraction has 48495 states and 219136 transitions. [2022-01-18 04:32:48,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:48,907 INFO L276 IsEmpty]: Start isEmpty. Operand 48495 states and 219136 transitions. [2022-01-18 04:32:49,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:32:49,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:32:49,032 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:32:49,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-01-18 04:32:49,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:49,235 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:32:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:32:49,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1517969131, now seen corresponding path program 27 times [2022-01-18 04:32:49,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:32:49,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377895247] [2022-01-18 04:32:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:32:49,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:32:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:49,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:32:49,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377895247] [2022-01-18 04:32:49,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377895247] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:32:49,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873031888] [2022-01-18 04:32:49,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:32:49,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:49,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:32:49,263 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:32:49,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 04:32:49,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 04:32:49,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:32:49,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:32:49,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:32:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:49,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:32:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:32:49,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873031888] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:32:49,399 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:32:49,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2022-01-18 04:32:49,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273767066] [2022-01-18 04:32:49,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:32:49,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 04:32:49,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:32:49,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 04:32:49,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-18 04:32:49,399 INFO L87 Difference]: Start difference. First operand 48495 states and 219136 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:50,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:32:50,572 INFO L93 Difference]: Finished difference Result 69880 states and 298246 transitions. [2022-01-18 04:32:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 04:32:50,573 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:32:50,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:32:50,845 INFO L225 Difference]: With dead ends: 69880 [2022-01-18 04:32:50,846 INFO L226 Difference]: Without dead ends: 69808 [2022-01-18 04:32:50,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:32:50,846 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 389 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:32:50,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 348 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:32:50,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69808 states. [2022-01-18 04:32:52,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69808 to 47135. [2022-01-18 04:32:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47135 states, 47134 states have (on average 4.529511605210676) internal successors, (213494), 47134 states have internal predecessors, (213494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47135 states to 47135 states and 213494 transitions. [2022-01-18 04:32:52,493 INFO L78 Accepts]: Start accepts. Automaton has 47135 states and 213494 transitions. Word has length 29 [2022-01-18 04:32:52,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:32:52,493 INFO L470 AbstractCegarLoop]: Abstraction has 47135 states and 213494 transitions. [2022-01-18 04:32:52,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:52,493 INFO L276 IsEmpty]: Start isEmpty. Operand 47135 states and 213494 transitions. [2022-01-18 04:32:52,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:32:52,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:32:52,602 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:32:52,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-01-18 04:32:52,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:52,802 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:32:52,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:32:52,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1260692049, now seen corresponding path program 28 times [2022-01-18 04:32:52,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:32:52,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949958554] [2022-01-18 04:32:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:32:52,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:32:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:52,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:32:52,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949958554] [2022-01-18 04:32:52,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949958554] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:32:52,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775773937] [2022-01-18 04:32:52,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:32:52,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:52,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:32:52,826 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:32:52,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 04:32:52,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:32:52,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:32:52,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:32:52,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:32:52,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:52,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:32:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:32:52,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775773937] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:32:52,972 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:32:52,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:32:52,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191318497] [2022-01-18 04:32:52,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:32:52,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:32:52,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:32:52,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:32:52,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:32:52,973 INFO L87 Difference]: Start difference. First operand 47135 states and 213494 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:32:54,211 INFO L93 Difference]: Finished difference Result 89708 states and 381495 transitions. [2022-01-18 04:32:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 04:32:54,211 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:32:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:32:54,572 INFO L225 Difference]: With dead ends: 89708 [2022-01-18 04:32:54,572 INFO L226 Difference]: Without dead ends: 89708 [2022-01-18 04:32:54,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2022-01-18 04:32:54,572 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 444 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:32:54,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 238 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:32:54,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89708 states. [2022-01-18 04:32:56,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89708 to 50510. [2022-01-18 04:32:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50510 states, 50509 states have (on average 4.561880060979232) internal successors, (230416), 50509 states have internal predecessors, (230416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50510 states to 50510 states and 230416 transitions. [2022-01-18 04:32:56,641 INFO L78 Accepts]: Start accepts. Automaton has 50510 states and 230416 transitions. Word has length 29 [2022-01-18 04:32:56,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:32:56,641 INFO L470 AbstractCegarLoop]: Abstraction has 50510 states and 230416 transitions. [2022-01-18 04:32:56,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:56,641 INFO L276 IsEmpty]: Start isEmpty. Operand 50510 states and 230416 transitions. [2022-01-18 04:32:56,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:32:56,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:32:56,768 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:32:56,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-01-18 04:32:56,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-01-18 04:32:56,968 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:32:56,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:32:56,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1022728657, now seen corresponding path program 29 times [2022-01-18 04:32:56,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:32:56,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217950784] [2022-01-18 04:32:56,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:32:56,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:32:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:32:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:57,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:32:57,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217950784] [2022-01-18 04:32:57,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217950784] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:32:57,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71780785] [2022-01-18 04:32:57,005 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:32:57,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:32:57,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:32:57,006 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:32:57,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 04:32:57,026 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:32:57,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:32:57,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:32:57,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:32:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:32:57,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:32:57,139 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:32:57,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71780785] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:32:57,139 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:32:57,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:32:57,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600990202] [2022-01-18 04:32:57,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:32:57,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:32:57,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:32:57,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:32:57,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:32:57,140 INFO L87 Difference]: Start difference. First operand 50510 states and 230416 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:32:57,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:32:57,878 INFO L93 Difference]: Finished difference Result 67513 states and 293577 transitions. [2022-01-18 04:32:57,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 04:32:57,878 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:32:57,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:32:58,506 INFO L225 Difference]: With dead ends: 67513 [2022-01-18 04:32:58,506 INFO L226 Difference]: Without dead ends: 67489 [2022-01-18 04:32:58,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-01-18 04:32:58,507 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 223 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:32:58,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 380 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:32:58,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67489 states. [2022-01-18 04:32:59,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67489 to 50508. [2022-01-18 04:32:59,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50508 states, 50507 states have (on average 4.561565723563071) internal successors, (230391), 50507 states have internal predecessors, (230391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:00,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50508 states to 50508 states and 230391 transitions. [2022-01-18 04:33:00,009 INFO L78 Accepts]: Start accepts. Automaton has 50508 states and 230391 transitions. Word has length 29 [2022-01-18 04:33:00,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:33:00,009 INFO L470 AbstractCegarLoop]: Abstraction has 50508 states and 230391 transitions. [2022-01-18 04:33:00,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:00,009 INFO L276 IsEmpty]: Start isEmpty. Operand 50508 states and 230391 transitions. [2022-01-18 04:33:00,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:33:00,141 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:33:00,141 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:33:00,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-01-18 04:33:00,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-01-18 04:33:00,342 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:33:00,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:33:00,342 INFO L85 PathProgramCache]: Analyzing trace with hash -657767983, now seen corresponding path program 30 times [2022-01-18 04:33:00,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:33:00,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179019686] [2022-01-18 04:33:00,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:33:00,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:33:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:33:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:00,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:33:00,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179019686] [2022-01-18 04:33:00,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179019686] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:33:00,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294518376] [2022-01-18 04:33:00,365 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:33:00,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:33:00,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:33:00,366 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:33:00,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 04:33:00,386 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:33:00,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:33:00,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:33:00,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:33:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:00,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:33:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:33:00,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294518376] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:33:00,493 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:33:00,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:33:00,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109422993] [2022-01-18 04:33:00,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:33:00,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:33:00,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:33:00,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:33:00,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:33:00,494 INFO L87 Difference]: Start difference. First operand 50508 states and 230391 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:01,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:33:01,852 INFO L93 Difference]: Finished difference Result 77373 states and 335751 transitions. [2022-01-18 04:33:01,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 04:33:01,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:33:01,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:33:02,204 INFO L225 Difference]: With dead ends: 77373 [2022-01-18 04:33:02,205 INFO L226 Difference]: Without dead ends: 77373 [2022-01-18 04:33:02,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2022-01-18 04:33:02,205 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 280 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:33:02,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 431 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:33:02,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77373 states. [2022-01-18 04:33:03,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77373 to 50746. [2022-01-18 04:33:03,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50746 states, 50745 states have (on average 4.560074884225047) internal successors, (231401), 50745 states have internal predecessors, (231401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50746 states to 50746 states and 231401 transitions. [2022-01-18 04:33:03,849 INFO L78 Accepts]: Start accepts. Automaton has 50746 states and 231401 transitions. Word has length 29 [2022-01-18 04:33:03,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:33:03,849 INFO L470 AbstractCegarLoop]: Abstraction has 50746 states and 231401 transitions. [2022-01-18 04:33:03,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:03,850 INFO L276 IsEmpty]: Start isEmpty. Operand 50746 states and 231401 transitions. [2022-01-18 04:33:03,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:33:03,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:33:03,979 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:33:03,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-01-18 04:33:04,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:33:04,180 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:33:04,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:33:04,180 INFO L85 PathProgramCache]: Analyzing trace with hash 331698697, now seen corresponding path program 31 times [2022-01-18 04:33:04,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:33:04,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583156984] [2022-01-18 04:33:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:33:04,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:33:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:33:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:04,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:33:04,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583156984] [2022-01-18 04:33:04,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583156984] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:33:04,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299317079] [2022-01-18 04:33:04,202 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:33:04,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:33:04,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:33:04,203 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:33:04,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 04:33:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:33:04,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:33:04,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:33:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:04,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:33:04,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:33:04,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299317079] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:33:04,330 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:33:04,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 9 [2022-01-18 04:33:04,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726140562] [2022-01-18 04:33:04,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:33:04,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:33:04,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:33:04,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:33:04,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:33:04,331 INFO L87 Difference]: Start difference. First operand 50746 states and 231401 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:05,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:33:05,612 INFO L93 Difference]: Finished difference Result 86093 states and 364091 transitions. [2022-01-18 04:33:05,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 04:33:05,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:33:05,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:33:05,974 INFO L225 Difference]: With dead ends: 86093 [2022-01-18 04:33:05,974 INFO L226 Difference]: Without dead ends: 86068 [2022-01-18 04:33:05,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-01-18 04:33:05,975 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 453 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:33:05,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 285 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:33:06,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86068 states. [2022-01-18 04:33:07,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86068 to 50746. [2022-01-18 04:33:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50746 states, 50745 states have (on average 4.559838407724899) internal successors, (231389), 50745 states have internal predecessors, (231389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:07,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50746 states to 50746 states and 231389 transitions. [2022-01-18 04:33:07,859 INFO L78 Accepts]: Start accepts. Automaton has 50746 states and 231389 transitions. Word has length 29 [2022-01-18 04:33:07,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:33:07,859 INFO L470 AbstractCegarLoop]: Abstraction has 50746 states and 231389 transitions. [2022-01-18 04:33:07,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:07,859 INFO L276 IsEmpty]: Start isEmpty. Operand 50746 states and 231389 transitions. [2022-01-18 04:33:08,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:33:08,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:33:08,342 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:33:08,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-01-18 04:33:08,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:33:08,549 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:33:08,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:33:08,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1532022643, now seen corresponding path program 32 times [2022-01-18 04:33:08,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:33:08,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316148234] [2022-01-18 04:33:08,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:33:08,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:33:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:33:08,582 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:33:08,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:33:08,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316148234] [2022-01-18 04:33:08,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316148234] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:33:08,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128672894] [2022-01-18 04:33:08,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 04:33:08,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:33:08,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:33:08,583 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:33:08,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 04:33:08,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 04:33:08,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:33:08,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:33:08,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:33:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:08,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:33:08,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:33:08,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128672894] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:33:08,729 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:33:08,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-01-18 04:33:08,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502603722] [2022-01-18 04:33:08,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:33:08,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:33:08,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:33:08,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:33:08,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:33:08,730 INFO L87 Difference]: Start difference. First operand 50746 states and 231389 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:10,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:33:10,338 INFO L93 Difference]: Finished difference Result 110373 states and 481503 transitions. [2022-01-18 04:33:10,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 04:33:10,338 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:33:10,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:33:11,256 INFO L225 Difference]: With dead ends: 110373 [2022-01-18 04:33:11,256 INFO L226 Difference]: Without dead ends: 110373 [2022-01-18 04:33:11,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=565, Invalid=2191, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 04:33:11,256 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 478 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 04:33:11,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 577 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 04:33:11,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110373 states. [2022-01-18 04:33:12,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110373 to 51698. [2022-01-18 04:33:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51698 states, 51697 states have (on average 4.5540166740816685) internal successors, (235429), 51697 states have internal predecessors, (235429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51698 states to 51698 states and 235429 transitions. [2022-01-18 04:33:13,205 INFO L78 Accepts]: Start accepts. Automaton has 51698 states and 235429 transitions. Word has length 29 [2022-01-18 04:33:13,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:33:13,205 INFO L470 AbstractCegarLoop]: Abstraction has 51698 states and 235429 transitions. [2022-01-18 04:33:13,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:13,206 INFO L276 IsEmpty]: Start isEmpty. Operand 51698 states and 235429 transitions. [2022-01-18 04:33:13,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:33:13,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:33:13,340 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:33:13,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-01-18 04:33:13,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-01-18 04:33:13,541 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:33:13,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:33:13,541 INFO L85 PathProgramCache]: Analyzing trace with hash -665758405, now seen corresponding path program 33 times [2022-01-18 04:33:13,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:33:13,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000135713] [2022-01-18 04:33:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:33:13,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:33:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:33:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:33:13,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:33:13,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000135713] [2022-01-18 04:33:13,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000135713] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:33:13,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257433452] [2022-01-18 04:33:13,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 04:33:13,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:33:13,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:33:13,565 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:33:13,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 04:33:13,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 04:33:13,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:33:13,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:33:13,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:33:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:13,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:33:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:33:13,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257433452] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:33:13,702 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:33:13,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2022-01-18 04:33:13,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526884168] [2022-01-18 04:33:13,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:33:13,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:33:13,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:33:13,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:33:13,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:33:13,703 INFO L87 Difference]: Start difference. First operand 51698 states and 235429 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:15,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:33:15,183 INFO L93 Difference]: Finished difference Result 100748 states and 423395 transitions. [2022-01-18 04:33:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 04:33:15,183 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:33:15,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:33:15,622 INFO L225 Difference]: With dead ends: 100748 [2022-01-18 04:33:15,622 INFO L226 Difference]: Without dead ends: 100498 [2022-01-18 04:33:15,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 04:33:15,623 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 435 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:33:15,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 414 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:33:15,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100498 states. [2022-01-18 04:33:17,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100498 to 51700. [2022-01-18 04:33:17,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51700 states, 51699 states have (on average 4.553163504129674) internal successors, (235394), 51699 states have internal predecessors, (235394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51700 states to 51700 states and 235394 transitions. [2022-01-18 04:33:17,967 INFO L78 Accepts]: Start accepts. Automaton has 51700 states and 235394 transitions. Word has length 29 [2022-01-18 04:33:17,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:33:17,967 INFO L470 AbstractCegarLoop]: Abstraction has 51700 states and 235394 transitions. [2022-01-18 04:33:17,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:17,967 INFO L276 IsEmpty]: Start isEmpty. Operand 51700 states and 235394 transitions. [2022-01-18 04:33:18,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:33:18,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:33:18,099 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:33:18,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-01-18 04:33:18,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:33:18,299 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:33:18,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:33:18,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1816433037, now seen corresponding path program 34 times [2022-01-18 04:33:18,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:33:18,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581585357] [2022-01-18 04:33:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:33:18,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:33:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:33:18,339 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:18,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:33:18,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581585357] [2022-01-18 04:33:18,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581585357] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:33:18,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413567716] [2022-01-18 04:33:18,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:33:18,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:33:18,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:33:18,340 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:33:18,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 04:33:18,361 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:33:18,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:33:18,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:33:18,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:33:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:18,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:33:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:18,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413567716] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:33:18,483 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:33:18,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 04:33:18,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367354051] [2022-01-18 04:33:18,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:33:18,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:33:18,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:33:18,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:33:18,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:33:18,483 INFO L87 Difference]: Start difference. First operand 51700 states and 235394 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:20,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:33:20,352 INFO L93 Difference]: Finished difference Result 96462 states and 425424 transitions. [2022-01-18 04:33:20,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 04:33:20,352 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:33:20,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:33:20,820 INFO L225 Difference]: With dead ends: 96462 [2022-01-18 04:33:20,820 INFO L226 Difference]: Without dead ends: 96437 [2022-01-18 04:33:20,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 04:33:20,820 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 248 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 04:33:20,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 654 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 04:33:20,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96437 states. [2022-01-18 04:33:22,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96437 to 53421. [2022-01-18 04:33:22,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53421 states, 53420 states have (on average 4.527517783601647) internal successors, (241860), 53420 states have internal predecessors, (241860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:22,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53421 states to 53421 states and 241860 transitions. [2022-01-18 04:33:22,699 INFO L78 Accepts]: Start accepts. Automaton has 53421 states and 241860 transitions. Word has length 29 [2022-01-18 04:33:22,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:33:22,699 INFO L470 AbstractCegarLoop]: Abstraction has 53421 states and 241860 transitions. [2022-01-18 04:33:22,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:22,699 INFO L276 IsEmpty]: Start isEmpty. Operand 53421 states and 241860 transitions. [2022-01-18 04:33:23,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 04:33:23,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:33:23,222 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:33:23,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-01-18 04:33:23,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:33:23,423 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:33:23,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:33:23,423 INFO L85 PathProgramCache]: Analyzing trace with hash 303066167, now seen corresponding path program 35 times [2022-01-18 04:33:23,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:33:23,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963944296] [2022-01-18 04:33:23,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:33:23,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:33:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:33:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:23,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:33:23,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963944296] [2022-01-18 04:33:23,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963944296] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:33:23,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513045127] [2022-01-18 04:33:23,452 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:33:23,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:33:23,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:33:23,453 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:33:23,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 04:33:23,486 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 04:33:23,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:33:23,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 04:33:23,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:33:23,547 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:23,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:33:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:23,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513045127] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:33:23,607 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:33:23,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 04:33:23,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127391954] [2022-01-18 04:33:23,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:33:23,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:33:23,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:33:23,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:33:23,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:33:23,608 INFO L87 Difference]: Start difference. First operand 53421 states and 241860 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:24,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:33:24,510 INFO L93 Difference]: Finished difference Result 84563 states and 356651 transitions. [2022-01-18 04:33:24,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 04:33:24,511 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-18 04:33:24,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:33:24,838 INFO L225 Difference]: With dead ends: 84563 [2022-01-18 04:33:24,838 INFO L226 Difference]: Without dead ends: 84422 [2022-01-18 04:33:24,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 04:33:24,839 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 480 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 04:33:24,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 292 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 04:33:24,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84422 states. [2022-01-18 04:33:26,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84422 to 54317. [2022-01-18 04:33:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54317 states, 54316 states have (on average 4.513716032108403) internal successors, (245167), 54316 states have internal predecessors, (245167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54317 states to 54317 states and 245167 transitions. [2022-01-18 04:33:26,958 INFO L78 Accepts]: Start accepts. Automaton has 54317 states and 245167 transitions. Word has length 29 [2022-01-18 04:33:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:33:26,958 INFO L470 AbstractCegarLoop]: Abstraction has 54317 states and 245167 transitions. [2022-01-18 04:33:26,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 54317 states and 245167 transitions. [2022-01-18 04:33:27,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 04:33:27,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:33:27,103 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:33:27,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-01-18 04:33:27,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:33:27,303 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:33:27,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:33:27,304 INFO L85 PathProgramCache]: Analyzing trace with hash 971511529, now seen corresponding path program 36 times [2022-01-18 04:33:27,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:33:27,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132821716] [2022-01-18 04:33:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:33:27,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:33:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:33:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:27,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:33:27,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132821716] [2022-01-18 04:33:27,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132821716] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:33:27,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970294418] [2022-01-18 04:33:27,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 04:33:27,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:33:27,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:33:27,359 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:33:27,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 04:33:27,380 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 04:33:27,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:33:27,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 04:33:27,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:33:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:27,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:33:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:27,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970294418] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:33:27,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:33:27,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 8 [2022-01-18 04:33:27,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540033834] [2022-01-18 04:33:27,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:33:27,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 04:33:27,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:33:27,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 04:33:27,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:33:27,750 INFO L87 Difference]: Start difference. First operand 54317 states and 245167 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:28,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:33:28,774 INFO L93 Difference]: Finished difference Result 56833 states and 254304 transitions. [2022-01-18 04:33:28,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 04:33:28,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-01-18 04:33:28,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:33:29,039 INFO L225 Difference]: With dead ends: 56833 [2022-01-18 04:33:29,039 INFO L226 Difference]: Without dead ends: 56765 [2022-01-18 04:33:29,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 10 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-18 04:33:29,039 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 95 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 04:33:29,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 178 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 04:33:29,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56765 states. [2022-01-18 04:33:30,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56765 to 55387. [2022-01-18 04:33:30,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55387 states, 55386 states have (on average 4.503304084064565) internal successors, (249420), 55386 states have internal predecessors, (249420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55387 states to 55387 states and 249420 transitions. [2022-01-18 04:33:30,592 INFO L78 Accepts]: Start accepts. Automaton has 55387 states and 249420 transitions. Word has length 31 [2022-01-18 04:33:30,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:33:30,592 INFO L470 AbstractCegarLoop]: Abstraction has 55387 states and 249420 transitions. [2022-01-18 04:33:30,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:30,592 INFO L276 IsEmpty]: Start isEmpty. Operand 55387 states and 249420 transitions. [2022-01-18 04:33:30,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 04:33:30,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:33:30,737 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:33:30,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-01-18 04:33:30,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2022-01-18 04:33:30,938 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:33:30,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:33:30,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1033676257, now seen corresponding path program 37 times [2022-01-18 04:33:30,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:33:30,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578696961] [2022-01-18 04:33:30,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:33:30,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:33:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:33:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:33:30,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:33:30,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578696961] [2022-01-18 04:33:30,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578696961] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:33:30,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896648694] [2022-01-18 04:33:30,993 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 04:33:30,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:33:30,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:33:30,994 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:33:31,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 04:33:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:33:31,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 04:33:31,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:33:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:31,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:33:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 04:33:31,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896648694] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:33:31,460 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:33:31,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 9 [2022-01-18 04:33:31,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622200022] [2022-01-18 04:33:31,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:33:31,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:33:31,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:33:31,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:33:31,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:33:31,461 INFO L87 Difference]: Start difference. First operand 55387 states and 249420 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:32,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:33:32,586 INFO L93 Difference]: Finished difference Result 57655 states and 257614 transitions. [2022-01-18 04:33:32,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 04:33:32,586 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-01-18 04:33:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:33:32,827 INFO L225 Difference]: With dead ends: 57655 [2022-01-18 04:33:32,827 INFO L226 Difference]: Without dead ends: 57519 [2022-01-18 04:33:32,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 11 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:33:32,827 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 119 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 04:33:32,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 205 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 04:33:32,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57519 states. [2022-01-18 04:33:34,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57519 to 55763. [2022-01-18 04:33:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55763 states, 55762 states have (on average 4.50256447042789) internal successors, (251072), 55762 states have internal predecessors, (251072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55763 states to 55763 states and 251072 transitions. [2022-01-18 04:33:34,325 INFO L78 Accepts]: Start accepts. Automaton has 55763 states and 251072 transitions. Word has length 31 [2022-01-18 04:33:34,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:33:34,325 INFO L470 AbstractCegarLoop]: Abstraction has 55763 states and 251072 transitions. [2022-01-18 04:33:34,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:34,325 INFO L276 IsEmpty]: Start isEmpty. Operand 55763 states and 251072 transitions. [2022-01-18 04:33:34,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 04:33:34,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:33:34,470 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:33:34,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-01-18 04:33:34,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-01-18 04:33:34,671 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:33:34,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:33:34,671 INFO L85 PathProgramCache]: Analyzing trace with hash 351590437, now seen corresponding path program 10 times [2022-01-18 04:33:34,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:33:34,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762054201] [2022-01-18 04:33:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:33:34,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:33:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:33:34,746 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:34,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:33:34,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762054201] [2022-01-18 04:33:34,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762054201] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:33:34,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167736281] [2022-01-18 04:33:34,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 04:33:34,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:33:34,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:33:34,747 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:33:34,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 04:33:34,767 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 04:33:34,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:33:34,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 04:33:34,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:33:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:35,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:33:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:35,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167736281] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:33:35,228 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:33:35,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 10 [2022-01-18 04:33:35,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921499130] [2022-01-18 04:33:35,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:33:35,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 04:33:35,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:33:35,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 04:33:35,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:33:35,228 INFO L87 Difference]: Start difference. First operand 55763 states and 251072 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:36,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 04:33:36,332 INFO L93 Difference]: Finished difference Result 57519 states and 257238 transitions. [2022-01-18 04:33:36,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 04:33:36,332 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-01-18 04:33:36,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 04:33:36,564 INFO L225 Difference]: With dead ends: 57519 [2022-01-18 04:33:36,565 INFO L226 Difference]: Without dead ends: 57055 [2022-01-18 04:33:36,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-18 04:33:36,565 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 83 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 04:33:36,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 217 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 04:33:36,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57055 states. [2022-01-18 04:33:37,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57055 to 56239. [2022-01-18 04:33:37,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56239 states, 56238 states have (on average 4.491767132543831) internal successors, (252608), 56238 states have internal predecessors, (252608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56239 states to 56239 states and 252608 transitions. [2022-01-18 04:33:38,142 INFO L78 Accepts]: Start accepts. Automaton has 56239 states and 252608 transitions. Word has length 31 [2022-01-18 04:33:38,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 04:33:38,142 INFO L470 AbstractCegarLoop]: Abstraction has 56239 states and 252608 transitions. [2022-01-18 04:33:38,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 04:33:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 56239 states and 252608 transitions. [2022-01-18 04:33:38,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 04:33:38,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 04:33:38,290 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 04:33:38,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-01-18 04:33:38,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-01-18 04:33:38,491 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 04:33:38,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 04:33:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash 948873901, now seen corresponding path program 11 times [2022-01-18 04:33:38,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 04:33:38,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800694731] [2022-01-18 04:33:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 04:33:38,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 04:33:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 04:33:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:33:38,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 04:33:38,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800694731] [2022-01-18 04:33:38,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800694731] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 04:33:38,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789089282] [2022-01-18 04:33:38,557 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 04:33:38,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 04:33:38,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 04:33:38,558 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 04:33:38,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 04:33:38,580 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 04:33:38,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 04:33:38,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 04:33:38,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 04:33:39,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 04:33:39,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 04:33:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 04:33:39,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789089282] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 04:33:39,652 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 04:33:39,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 9 [2022-01-18 04:33:39,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484016606] [2022-01-18 04:33:39,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 04:33:39,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 04:33:39,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 04:33:39,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 04:33:39,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-18 04:33:39,653 INFO L87 Difference]: Start difference. First operand 56239 states and 252608 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)