/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 19:15:32,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 19:15:32,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 19:15:33,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 19:15:33,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 19:15:33,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 19:15:33,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 19:15:33,042 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 [2022-03-03 19:15:33,055 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 19:15:33,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 19:15:33,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 19:15:33,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 19:15:33,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 19:15:33,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 19:15:33,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 19:15:33,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 19:15:33,057 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 19:15:33,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 19:15:33,057 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 19:15:33,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 19:15:33,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 19:15:33,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 19:15:33,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 19:15:33,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 19:15:33,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 19:15:33,058 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 19:15:33,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 19:15:33,058 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 19:15:33,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 19:15:33,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 19:15:33,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 19:15:33,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 19:15:33,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 19:15:33,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 19:15:33,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 19:15:33,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 19:15:33,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 19:15:33,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 19:15:33,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 19:15:33,060 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 19:15:33,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 19:15:33,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 19:15:33,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 19:15:33,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 19:15:33,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 19:15:33,236 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-03 19:15:33,237 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-03 19:15:33,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl [2022-03-03 19:15:33,238 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl' [2022-03-03 19:15:33,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 19:15:33,263 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-03 19:15:33,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 19:15:33,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 19:15:33,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 19:15:33,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:15:33" (1/1) ... [2022-03-03 19:15:33,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:15:33" (1/1) ... [2022-03-03 19:15:33,286 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-03 19:15:33,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 19:15:33,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 19:15:33,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 19:15:33,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 19:15:33,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:15:33" (1/1) ... [2022-03-03 19:15:33,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:15:33" (1/1) ... [2022-03-03 19:15:33,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:15:33" (1/1) ... [2022-03-03 19:15:33,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:15:33" (1/1) ... [2022-03-03 19:15:33,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:15:33" (1/1) ... [2022-03-03 19:15:33,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:15:33" (1/1) ... [2022-03-03 19:15:33,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:15:33" (1/1) ... [2022-03-03 19:15:33,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 19:15:33,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 19:15:33,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 19:15:33,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 19:15:33,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:15:33" (1/1) ... [2022-03-03 19:15:33,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 19:15:33,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:33,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-03 19:15:33,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-03 19:15:33,363 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-03 19:15:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 19:15:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 19:15:33,363 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-03 19:15:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 19:15:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 19:15:33,363 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-03 19:15:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 19:15:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 19:15:33,363 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-03 19:15:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-03 19:15:33,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-03 19:15:33,364 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 19:15:33,397 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 19:15:33,398 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 19:15:33,479 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 19:15:33,505 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 19:15:33,505 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-03 19:15:33,507 INFO L202 PluginConnector]: Adding new model misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 07:15:33 BoogieIcfgContainer [2022-03-03 19:15:33,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 19:15:33,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 19:15:33,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 19:15:33,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 19:15:33,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 07:15:33" (1/2) ... [2022-03-03 19:15:33,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379c3b40 and model type misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 07:15:33, skipping insertion in model container [2022-03-03 19:15:33,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 07:15:33" (2/2) ... [2022-03-03 19:15:33,529 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-5.wvr.bpl [2022-03-03 19:15:33,532 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 19:15:33,532 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 19:15:33,532 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 19:15:33,532 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 19:15:33,579 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-03 19:15:33,614 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 19:15:33,618 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, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 19:15:33,619 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-03 19:15:33,625 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 23 transitions, 70 flow [2022-03-03 19:15:33,643 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 87 states, 86 states have (on average 2.616279069767442) internal successors, (225), 86 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:33,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 86 states have (on average 2.616279069767442) internal successors, (225), 86 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:33,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-03 19:15:33,650 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:33,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:33,651 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:33,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:33,654 INFO L85 PathProgramCache]: Analyzing trace with hash 892684368, now seen corresponding path program 1 times [2022-03-03 19:15:33,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:33,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955623372] [2022-03-03 19:15:33,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:33,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:33,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:33,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955623372] [2022-03-03 19:15:33,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955623372] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:15:33,764 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:15:33,765 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 19:15:33,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874610097] [2022-03-03 19:15:33,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:15:33,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 19:15:33,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:33,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 19:15:33,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 19:15:33,807 INFO L87 Difference]: Start difference. First operand has 87 states, 86 states have (on average 2.616279069767442) internal successors, (225), 86 states have internal predecessors, (225), 0 states have call successors, (0), 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 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:33,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:33,850 INFO L93 Difference]: Finished difference Result 84 states and 197 transitions. [2022-03-03 19:15:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 19:15:33,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-03-03 19:15:33,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:33,857 INFO L225 Difference]: With dead ends: 84 [2022-03-03 19:15:33,857 INFO L226 Difference]: Without dead ends: 56 [2022-03-03 19:15:33,858 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 [2022-03-03 19:15:33,860 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:33,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 15 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:15:33,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-03-03 19:15:33,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-03-03 19:15:33,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:33,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 117 transitions. [2022-03-03 19:15:33,910 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 117 transitions. Word has length 14 [2022-03-03 19:15:33,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:33,911 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 117 transitions. [2022-03-03 19:15:33,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:33,911 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 117 transitions. [2022-03-03 19:15:33,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-03 19:15:33,912 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:33,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:33,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 19:15:33,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:33,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:33,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1238285906, now seen corresponding path program 2 times [2022-03-03 19:15:33,913 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:33,913 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398728198] [2022-03-03 19:15:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:33,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:33,937 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:33,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398728198] [2022-03-03 19:15:33,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398728198] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:15:33,937 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:15:33,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 19:15:33,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842121593] [2022-03-03 19:15:33,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:15:33,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 19:15:33,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:33,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 19:15:33,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-03 19:15:33,939 INFO L87 Difference]: Start difference. First operand 56 states and 117 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:33,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:33,972 INFO L93 Difference]: Finished difference Result 80 states and 164 transitions. [2022-03-03 19:15:33,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 19:15:33,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-03-03 19:15:33,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:33,974 INFO L225 Difference]: With dead ends: 80 [2022-03-03 19:15:33,975 INFO L226 Difference]: Without dead ends: 66 [2022-03-03 19:15:33,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:15:33,976 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:33,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 18 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:15:33,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-03-03 19:15:33,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-03-03 19:15:33,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.169230769230769) internal successors, (141), 65 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:33,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 141 transitions. [2022-03-03 19:15:33,984 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 141 transitions. Word has length 14 [2022-03-03 19:15:33,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:33,985 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 141 transitions. [2022-03-03 19:15:33,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:33,985 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 141 transitions. [2022-03-03 19:15:33,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:15:33,985 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:33,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:33,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 19:15:33,986 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:33,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:33,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1399519920, now seen corresponding path program 1 times [2022-03-03 19:15:33,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:33,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035232435] [2022-03-03 19:15:33,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:33,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:34,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:34,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035232435] [2022-03-03 19:15:34,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035232435] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:34,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101665421] [2022-03-03 19:15:34,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:34,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:34,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:34,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:34,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 19:15:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:34,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 19:15:34,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:34,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:34,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101665421] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:34,253 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:34,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-03-03 19:15:34,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745883923] [2022-03-03 19:15:34,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:34,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 19:15:34,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:34,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 19:15:34,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-03-03 19:15:34,254 INFO L87 Difference]: Start difference. First operand 66 states and 141 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:34,390 INFO L93 Difference]: Finished difference Result 196 states and 408 transitions. [2022-03-03 19:15:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 19:15:34,391 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-03 19:15:34,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:34,395 INFO L225 Difference]: With dead ends: 196 [2022-03-03 19:15:34,395 INFO L226 Difference]: Without dead ends: 174 [2022-03-03 19:15:34,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-03 19:15:34,400 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 59 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:34,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 73 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:15:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-03-03 19:15:34,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 94. [2022-03-03 19:15:34,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.2903225806451615) internal successors, (213), 93 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:34,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 213 transitions. [2022-03-03 19:15:34,416 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 213 transitions. Word has length 16 [2022-03-03 19:15:34,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:34,416 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 213 transitions. [2022-03-03 19:15:34,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:34,416 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 213 transitions. [2022-03-03 19:15:34,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-03 19:15:34,417 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:34,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:34,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-03 19:15:34,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:34,619 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:34,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:34,620 INFO L85 PathProgramCache]: Analyzing trace with hash -976987344, now seen corresponding path program 1 times [2022-03-03 19:15:34,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:34,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016474603] [2022-03-03 19:15:34,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:34,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:34,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:34,669 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:34,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016474603] [2022-03-03 19:15:34,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016474603] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 19:15:34,669 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 19:15:34,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 19:15:34,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145353661] [2022-03-03 19:15:34,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 19:15:34,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 19:15:34,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:34,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 19:15:34,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 19:15:34,670 INFO L87 Difference]: Start difference. First operand 94 states and 213 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:34,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:34,714 INFO L93 Difference]: Finished difference Result 108 states and 232 transitions. [2022-03-03 19:15:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 19:15:34,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-03 19:15:34,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:34,716 INFO L225 Difference]: With dead ends: 108 [2022-03-03 19:15:34,716 INFO L226 Difference]: Without dead ends: 94 [2022-03-03 19:15:34,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-03 19:15:34,721 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 18 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:34,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 23 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 19:15:34,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-03-03 19:15:34,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-03-03 19:15:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.247311827956989) internal successors, (209), 93 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:34,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 209 transitions. [2022-03-03 19:15:34,730 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 209 transitions. Word has length 16 [2022-03-03 19:15:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:34,730 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 209 transitions. [2022-03-03 19:15:34,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:34,730 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 209 transitions. [2022-03-03 19:15:34,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-03 19:15:34,731 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:34,731 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:34,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 19:15:34,731 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1022827570, now seen corresponding path program 2 times [2022-03-03 19:15:34,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:34,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076876088] [2022-03-03 19:15:34,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:34,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:34,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:34,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076876088] [2022-03-03 19:15:34,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076876088] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:34,789 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237035817] [2022-03-03 19:15:34,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:15:34,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:34,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:34,792 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:34,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 19:15:34,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:15:34,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:34,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-03 19:15:34,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:34,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:34,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:35,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237035817] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:35,066 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:35,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-03 19:15:35,066 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519237350] [2022-03-03 19:15:35,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:35,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 19:15:35,066 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:35,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 19:15:35,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-03-03 19:15:35,067 INFO L87 Difference]: Start difference. First operand 94 states and 209 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:35,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:35,247 INFO L93 Difference]: Finished difference Result 254 states and 543 transitions. [2022-03-03 19:15:35,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 19:15:35,247 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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 18 [2022-03-03 19:15:35,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:35,248 INFO L225 Difference]: With dead ends: 254 [2022-03-03 19:15:35,248 INFO L226 Difference]: Without dead ends: 220 [2022-03-03 19:15:35,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-03-03 19:15:35,249 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:35,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 110 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:15:35,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-03-03 19:15:35,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 118. [2022-03-03 19:15:35,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.3333333333333335) internal successors, (273), 117 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 273 transitions. [2022-03-03 19:15:35,254 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 273 transitions. Word has length 18 [2022-03-03 19:15:35,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:35,255 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 273 transitions. [2022-03-03 19:15:35,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:35,255 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 273 transitions. [2022-03-03 19:15:35,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:35,255 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:35,256 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:35,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:35,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:35,472 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:35,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:35,473 INFO L85 PathProgramCache]: Analyzing trace with hash 283894580, now seen corresponding path program 2 times [2022-03-03 19:15:35,473 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:35,473 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605705111] [2022-03-03 19:15:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:35,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:35,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:35,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605705111] [2022-03-03 19:15:35,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605705111] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:35,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105366035] [2022-03-03 19:15:35,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:15:35,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:35,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:35,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:35,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 19:15:35,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:15:35,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:35,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 19:15:35,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:35,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:35,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:35,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105366035] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:35,916 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:35,916 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-03-03 19:15:35,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320390007] [2022-03-03 19:15:35,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:35,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:15:35,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:35,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:15:35,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:15:35,918 INFO L87 Difference]: Start difference. First operand 118 states and 273 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 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) [2022-03-03 19:15:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:36,217 INFO L93 Difference]: Finished difference Result 418 states and 903 transitions. [2022-03-03 19:15:36,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:15:36,218 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 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 20 [2022-03-03 19:15:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:36,219 INFO L225 Difference]: With dead ends: 418 [2022-03-03 19:15:36,219 INFO L226 Difference]: Without dead ends: 366 [2022-03-03 19:15:36,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:36,220 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 161 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:36,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 95 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:15:36,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-03-03 19:15:36,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 182. [2022-03-03 19:15:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.414364640883978) internal successors, (437), 181 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:36,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 437 transitions. [2022-03-03 19:15:36,230 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 437 transitions. Word has length 20 [2022-03-03 19:15:36,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:36,231 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 437 transitions. [2022-03-03 19:15:36,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 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) [2022-03-03 19:15:36,231 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 437 transitions. [2022-03-03 19:15:36,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:36,234 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:36,234 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:36,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:36,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:36,444 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:36,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:36,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2092612684, now seen corresponding path program 1 times [2022-03-03 19:15:36,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:36,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947323376] [2022-03-03 19:15:36,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:36,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:36,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:36,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947323376] [2022-03-03 19:15:36,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947323376] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:36,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120063898] [2022-03-03 19:15:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:36,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:36,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:36,494 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:36,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 19:15:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:36,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:15:36,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:36,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:36,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:36,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120063898] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:36,907 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:36,907 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-03-03 19:15:36,907 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376979307] [2022-03-03 19:15:36,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:36,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:15:36,907 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:36,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:15:36,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:15:36,908 INFO L87 Difference]: Start difference. First operand 182 states and 437 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 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) [2022-03-03 19:15:37,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:37,265 INFO L93 Difference]: Finished difference Result 378 states and 859 transitions. [2022-03-03 19:15:37,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 19:15:37,266 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 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 20 [2022-03-03 19:15:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:37,267 INFO L225 Difference]: With dead ends: 378 [2022-03-03 19:15:37,267 INFO L226 Difference]: Without dead ends: 340 [2022-03-03 19:15:37,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:37,268 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 162 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:37,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 92 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:15:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-03-03 19:15:37,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 230. [2022-03-03 19:15:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.432314410480349) internal successors, (557), 229 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:37,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 557 transitions. [2022-03-03 19:15:37,279 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 557 transitions. Word has length 20 [2022-03-03 19:15:37,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:37,280 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 557 transitions. [2022-03-03 19:15:37,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 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) [2022-03-03 19:15:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 557 transitions. [2022-03-03 19:15:37,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-03 19:15:37,284 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:37,284 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:37,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:37,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:37,485 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:37,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:37,485 INFO L85 PathProgramCache]: Analyzing trace with hash 265646448, now seen corresponding path program 2 times [2022-03-03 19:15:37,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:37,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947222451] [2022-03-03 19:15:37,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:37,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:37,530 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:37,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947222451] [2022-03-03 19:15:37,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947222451] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:37,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653958099] [2022-03-03 19:15:37,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:15:37,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:37,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:37,531 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:37,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 19:15:37,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:15:37,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:37,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 19:15:37,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:37,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:37,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:37,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653958099] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:37,917 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:37,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-03-03 19:15:37,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474460239] [2022-03-03 19:15:37,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:37,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 19:15:37,918 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:37,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 19:15:37,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-03-03 19:15:37,919 INFO L87 Difference]: Start difference. First operand 230 states and 557 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 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) [2022-03-03 19:15:38,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:38,152 INFO L93 Difference]: Finished difference Result 418 states and 953 transitions. [2022-03-03 19:15:38,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 19:15:38,153 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 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 20 [2022-03-03 19:15:38,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:38,154 INFO L225 Difference]: With dead ends: 418 [2022-03-03 19:15:38,154 INFO L226 Difference]: Without dead ends: 374 [2022-03-03 19:15:38,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2022-03-03 19:15:38,155 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 128 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:38,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 112 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 19:15:38,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-03-03 19:15:38,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 238. [2022-03-03 19:15:38,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 2.4177215189873418) internal successors, (573), 237 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:38,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 573 transitions. [2022-03-03 19:15:38,162 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 573 transitions. Word has length 20 [2022-03-03 19:15:38,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:38,162 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 573 transitions. [2022-03-03 19:15:38,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 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) [2022-03-03 19:15:38,162 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 573 transitions. [2022-03-03 19:15:38,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-03 19:15:38,162 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:38,162 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:38,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:38,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:38,379 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:38,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:38,380 INFO L85 PathProgramCache]: Analyzing trace with hash -199438802, now seen corresponding path program 3 times [2022-03-03 19:15:38,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:38,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934791516] [2022-03-03 19:15:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:38,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:38,432 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:38,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934791516] [2022-03-03 19:15:38,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934791516] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:38,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240482172] [2022-03-03 19:15:38,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:15:38,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:38,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:38,433 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:38,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 19:15:38,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 19:15:38,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:38,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 19:15:38,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:38,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:39,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:39,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240482172] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:39,125 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:39,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-03-03 19:15:39,126 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626406792] [2022-03-03 19:15:39,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:39,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-03 19:15:39,126 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:39,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-03 19:15:39,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-03-03 19:15:39,126 INFO L87 Difference]: Start difference. First operand 238 states and 573 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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) [2022-03-03 19:15:39,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:39,871 INFO L93 Difference]: Finished difference Result 612 states and 1394 transitions. [2022-03-03 19:15:39,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 19:15:39,871 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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 22 [2022-03-03 19:15:39,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:39,873 INFO L225 Difference]: With dead ends: 612 [2022-03-03 19:15:39,873 INFO L226 Difference]: Without dead ends: 558 [2022-03-03 19:15:39,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=313, Invalid=877, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 19:15:39,874 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 205 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:39,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 235 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:15:39,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-03-03 19:15:39,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 318. [2022-03-03 19:15:39,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 2.4637223974763405) internal successors, (781), 317 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:39,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 781 transitions. [2022-03-03 19:15:39,881 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 781 transitions. Word has length 22 [2022-03-03 19:15:39,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:39,881 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 781 transitions. [2022-03-03 19:15:39,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 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) [2022-03-03 19:15:39,881 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 781 transitions. [2022-03-03 19:15:39,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-03 19:15:39,882 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:39,882 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:39,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:40,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:40,099 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:40,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:40,099 INFO L85 PathProgramCache]: Analyzing trace with hash -433269004, now seen corresponding path program 4 times [2022-03-03 19:15:40,099 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:40,099 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454133726] [2022-03-03 19:15:40,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:40,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:40,165 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:40,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:40,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454133726] [2022-03-03 19:15:40,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454133726] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:40,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818020659] [2022-03-03 19:15:40,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:15:40,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:40,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:40,166 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:40,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 19:15:40,187 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:15:40,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:40,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 19:15:40,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:40,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:41,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818020659] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:41,113 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:41,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-03-03 19:15:41,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564725937] [2022-03-03 19:15:41,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:41,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 19:15:41,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:41,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 19:15:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:15:41,114 INFO L87 Difference]: Start difference. First operand 318 states and 781 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:42,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:42,226 INFO L93 Difference]: Finished difference Result 842 states and 1941 transitions. [2022-03-03 19:15:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 19:15:42,226 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-03 19:15:42,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:42,230 INFO L225 Difference]: With dead ends: 842 [2022-03-03 19:15:42,230 INFO L226 Difference]: Without dead ends: 764 [2022-03-03 19:15:42,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=503, Invalid=1567, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 19:15:42,231 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 276 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:42,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 183 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:15:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-03-03 19:15:42,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 432. [2022-03-03 19:15:42,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 2.4988399071925755) internal successors, (1077), 431 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1077 transitions. [2022-03-03 19:15:42,241 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1077 transitions. Word has length 24 [2022-03-03 19:15:42,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:42,241 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1077 transitions. [2022-03-03 19:15:42,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:42,241 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1077 transitions. [2022-03-03 19:15:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-03 19:15:42,242 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:42,242 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:42,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:42,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:42,446 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:42,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash -639207436, now seen corresponding path program 5 times [2022-03-03 19:15:42,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:42,447 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468785509] [2022-03-03 19:15:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:42,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:42,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:42,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468785509] [2022-03-03 19:15:42,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468785509] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:42,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815725303] [2022-03-03 19:15:42,529 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:15:42,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:42,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:42,530 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:42,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 19:15:42,554 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 19:15:42,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:42,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 19:15:42,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:42,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:43,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815725303] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:43,364 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:43,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-03-03 19:15:43,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287347691] [2022-03-03 19:15:43,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:43,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 19:15:43,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:43,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 19:15:43,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:15:43,365 INFO L87 Difference]: Start difference. First operand 432 states and 1077 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:44,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:44,373 INFO L93 Difference]: Finished difference Result 888 states and 2094 transitions. [2022-03-03 19:15:44,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 19:15:44,373 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-03 19:15:44,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:44,376 INFO L225 Difference]: With dead ends: 888 [2022-03-03 19:15:44,376 INFO L226 Difference]: Without dead ends: 804 [2022-03-03 19:15:44,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=483, Invalid=1409, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 19:15:44,377 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 282 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:44,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 152 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:15:44,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-03-03 19:15:44,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 512. [2022-03-03 19:15:44,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 2.4990215264187867) internal successors, (1277), 511 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1277 transitions. [2022-03-03 19:15:44,393 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1277 transitions. Word has length 24 [2022-03-03 19:15:44,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:44,393 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 1277 transitions. [2022-03-03 19:15:44,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:44,393 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1277 transitions. [2022-03-03 19:15:44,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-03 19:15:44,395 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:44,395 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:44,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:44,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-03 19:15:44,612 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:44,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:44,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2089724728, now seen corresponding path program 6 times [2022-03-03 19:15:44,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:44,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767673509] [2022-03-03 19:15:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:44,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:44,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:44,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767673509] [2022-03-03 19:15:44,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767673509] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:44,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499504306] [2022-03-03 19:15:44,691 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:15:44,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:44,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:44,693 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:44,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 19:15:44,713 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 19:15:44,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:44,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 19:15:44,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:44,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:45,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499504306] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:45,517 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:45,517 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-03-03 19:15:45,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356838419] [2022-03-03 19:15:45,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:45,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 19:15:45,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:45,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 19:15:45,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:15:45,518 INFO L87 Difference]: Start difference. First operand 512 states and 1277 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:46,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:46,587 INFO L93 Difference]: Finished difference Result 968 states and 2317 transitions. [2022-03-03 19:15:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 19:15:46,587 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-03 19:15:46,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:46,590 INFO L225 Difference]: With dead ends: 968 [2022-03-03 19:15:46,590 INFO L226 Difference]: Without dead ends: 900 [2022-03-03 19:15:46,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=595, Invalid=1757, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 19:15:46,591 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 261 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:46,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 131 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:15:46,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2022-03-03 19:15:46,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 632. [2022-03-03 19:15:46,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 2.5055467511885894) internal successors, (1581), 631 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1581 transitions. [2022-03-03 19:15:46,602 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1581 transitions. Word has length 24 [2022-03-03 19:15:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:46,603 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 1581 transitions. [2022-03-03 19:15:46,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1581 transitions. [2022-03-03 19:15:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-03 19:15:46,604 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:46,604 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:46,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:46,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:46,819 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:46,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:46,820 INFO L85 PathProgramCache]: Analyzing trace with hash -977544972, now seen corresponding path program 7 times [2022-03-03 19:15:46,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:46,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670842709] [2022-03-03 19:15:46,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:46,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:46,888 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:46,888 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670842709] [2022-03-03 19:15:46,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670842709] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:46,888 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447597077] [2022-03-03 19:15:46,888 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:15:46,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:46,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:46,889 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:46,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 19:15:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:46,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 19:15:46,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:47,109 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:47,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:47,643 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:47,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447597077] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:47,643 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:47,644 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-03-03 19:15:47,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458485165] [2022-03-03 19:15:47,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:47,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 19:15:47,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:47,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 19:15:47,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:15:47,645 INFO L87 Difference]: Start difference. First operand 632 states and 1581 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:48,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:48,472 INFO L93 Difference]: Finished difference Result 1128 states and 2697 transitions. [2022-03-03 19:15:48,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 19:15:48,472 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-03 19:15:48,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:48,475 INFO L225 Difference]: With dead ends: 1128 [2022-03-03 19:15:48,475 INFO L226 Difference]: Without dead ends: 1056 [2022-03-03 19:15:48,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=465, Invalid=1341, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 19:15:48,477 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 280 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:48,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 118 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:15:48,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2022-03-03 19:15:48,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 728. [2022-03-03 19:15:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 727 states have (on average 2.5048143053645116) internal successors, (1821), 727 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:48,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1821 transitions. [2022-03-03 19:15:48,491 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1821 transitions. Word has length 24 [2022-03-03 19:15:48,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:48,491 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 1821 transitions. [2022-03-03 19:15:48,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:48,491 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1821 transitions. [2022-03-03 19:15:48,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-03 19:15:48,492 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:48,492 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:48,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:48,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-03 19:15:48,706 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:48,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash -979789068, now seen corresponding path program 8 times [2022-03-03 19:15:48,706 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:48,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534624287] [2022-03-03 19:15:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:48,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:48,771 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:48,771 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:48,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534624287] [2022-03-03 19:15:48,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534624287] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:48,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633678385] [2022-03-03 19:15:48,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:15:48,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:48,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:48,773 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:48,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 19:15:48,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:15:48,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:48,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 19:15:48,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:49,012 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:49,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:49,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633678385] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:49,622 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:49,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-03-03 19:15:49,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900200941] [2022-03-03 19:15:49,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:49,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 19:15:49,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:49,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 19:15:49,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:15:49,623 INFO L87 Difference]: Start difference. First operand 728 states and 1821 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:51,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:51,037 INFO L93 Difference]: Finished difference Result 1340 states and 3209 transitions. [2022-03-03 19:15:51,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 19:15:51,037 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-03 19:15:51,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:51,041 INFO L225 Difference]: With dead ends: 1340 [2022-03-03 19:15:51,041 INFO L226 Difference]: Without dead ends: 1278 [2022-03-03 19:15:51,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=645, Invalid=1905, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 19:15:51,042 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 240 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:51,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 281 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:15:51,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2022-03-03 19:15:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 848. [2022-03-03 19:15:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 2.5277449822904368) internal successors, (2141), 847 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:51,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2141 transitions. [2022-03-03 19:15:51,060 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 2141 transitions. Word has length 24 [2022-03-03 19:15:51,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:51,060 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 2141 transitions. [2022-03-03 19:15:51,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 2141 transitions. [2022-03-03 19:15:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-03 19:15:51,061 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:51,061 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:51,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-03 19:15:51,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-03 19:15:51,271 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:51,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:51,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1859471792, now seen corresponding path program 9 times [2022-03-03 19:15:51,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:51,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959269401] [2022-03-03 19:15:51,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:51,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:51,343 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:51,344 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959269401] [2022-03-03 19:15:51,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959269401] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:51,344 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167479346] [2022-03-03 19:15:51,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:15:51,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:51,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:51,345 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:51,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 19:15:51,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 19:15:51,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:51,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 19:15:51,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:51,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:52,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167479346] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:52,308 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:52,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-03-03 19:15:52,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462402696] [2022-03-03 19:15:52,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:52,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 19:15:52,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:52,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 19:15:52,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:15:52,309 INFO L87 Difference]: Start difference. First operand 848 states and 2141 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:53,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:53,602 INFO L93 Difference]: Finished difference Result 1404 states and 3390 transitions. [2022-03-03 19:15:53,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 19:15:53,602 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-03 19:15:53,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:53,606 INFO L225 Difference]: With dead ends: 1404 [2022-03-03 19:15:53,606 INFO L226 Difference]: Without dead ends: 1330 [2022-03-03 19:15:53,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=575, Invalid=1777, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 19:15:53,608 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 328 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:53,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 199 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:15:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2022-03-03 19:15:53,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1016. [2022-03-03 19:15:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1015 states have (on average 2.5389162561576355) internal successors, (2577), 1015 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:53,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 2577 transitions. [2022-03-03 19:15:53,624 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 2577 transitions. Word has length 24 [2022-03-03 19:15:53,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:53,624 INFO L470 AbstractCegarLoop]: Abstraction has 1016 states and 2577 transitions. [2022-03-03 19:15:53,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:53,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 2577 transitions. [2022-03-03 19:15:53,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-03 19:15:53,625 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:53,625 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:53,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-03-03 19:15:53,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-03 19:15:53,841 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:53,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:53,842 INFO L85 PathProgramCache]: Analyzing trace with hash -77236372, now seen corresponding path program 10 times [2022-03-03 19:15:53,842 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:53,842 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741142411] [2022-03-03 19:15:53,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:53,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:53,914 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:53,914 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:53,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741142411] [2022-03-03 19:15:53,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741142411] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:53,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141237462] [2022-03-03 19:15:53,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:15:53,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:53,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:53,916 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:53,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 19:15:53,935 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:15:53,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:53,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 19:15:53,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:54,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:54,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141237462] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:54,755 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:54,755 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-03-03 19:15:54,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159342582] [2022-03-03 19:15:54,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:54,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 19:15:54,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:54,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 19:15:54,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-03-03 19:15:54,756 INFO L87 Difference]: Start difference. First operand 1016 states and 2577 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:55,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:55,499 INFO L93 Difference]: Finished difference Result 1256 states and 3117 transitions. [2022-03-03 19:15:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 19:15:55,517 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-03 19:15:55,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:55,521 INFO L225 Difference]: With dead ends: 1256 [2022-03-03 19:15:55,521 INFO L226 Difference]: Without dead ends: 1216 [2022-03-03 19:15:55,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=434, Invalid=1288, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 19:15:55,522 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 186 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:55,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 154 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:15:55,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-03-03 19:15:55,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1032. [2022-03-03 19:15:55,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 1031 states have (on average 2.530552861299709) internal successors, (2609), 1031 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:55,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 2609 transitions. [2022-03-03 19:15:55,537 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 2609 transitions. Word has length 24 [2022-03-03 19:15:55,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:55,537 INFO L470 AbstractCegarLoop]: Abstraction has 1032 states and 2609 transitions. [2022-03-03 19:15:55,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:55,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 2609 transitions. [2022-03-03 19:15:55,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:15:55,538 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:55,539 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:55,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:55,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-03 19:15:55,755 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:55,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1872818628, now seen corresponding path program 3 times [2022-03-03 19:15:55,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:55,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611884419] [2022-03-03 19:15:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:55,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:55,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:55,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611884419] [2022-03-03 19:15:55,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611884419] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:55,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330721556] [2022-03-03 19:15:55,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:15:55,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:55,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:55,935 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:55,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 19:15:55,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-03-03 19:15:55,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:55,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 19:15:55,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:56,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:56,883 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:56,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330721556] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:56,883 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:56,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:15:56,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451501073] [2022-03-03 19:15:56,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:56,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:56,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:56,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:56,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:56,884 INFO L87 Difference]: Start difference. First operand 1032 states and 2609 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:57,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:15:57,864 INFO L93 Difference]: Finished difference Result 1692 states and 4022 transitions. [2022-03-03 19:15:57,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 19:15:57,864 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:15:57,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:15:57,869 INFO L225 Difference]: With dead ends: 1692 [2022-03-03 19:15:57,869 INFO L226 Difference]: Without dead ends: 1582 [2022-03-03 19:15:57,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=760, Invalid=2210, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 19:15:57,870 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 425 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 19:15:57,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 207 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 19:15:57,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-03-03 19:15:57,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1166. [2022-03-03 19:15:57,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 2.5278969957081543) internal successors, (2945), 1165 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:57,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2945 transitions. [2022-03-03 19:15:57,888 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2945 transitions. Word has length 28 [2022-03-03 19:15:57,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:15:57,888 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 2945 transitions. [2022-03-03 19:15:57,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:15:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2945 transitions. [2022-03-03 19:15:57,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:15:57,890 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:15:57,890 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:15:57,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 19:15:58,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:58,103 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:15:58,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:15:58,104 INFO L85 PathProgramCache]: Analyzing trace with hash 45641404, now seen corresponding path program 11 times [2022-03-03 19:15:58,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:15:58,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645076888] [2022-03-03 19:15:58,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:15:58,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:15:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:15:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:58,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:15:58,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645076888] [2022-03-03 19:15:58,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645076888] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:15:58,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195903482] [2022-03-03 19:15:58,198 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:15:58,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:15:58,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:15:58,199 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:15:58,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 19:15:58,221 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-03 19:15:58,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:15:58,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:15:58,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:15:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:58,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:15:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:15:59,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195903482] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:15:59,653 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:15:59,653 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:15:59,653 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366394565] [2022-03-03 19:15:59,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:15:59,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:15:59,653 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:15:59,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:15:59,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:15:59,654 INFO L87 Difference]: Start difference. First operand 1166 states and 2945 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:01,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:01,932 INFO L93 Difference]: Finished difference Result 1870 states and 4508 transitions. [2022-03-03 19:16:01,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 19:16:01,933 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:16:01,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:01,938 INFO L225 Difference]: With dead ends: 1870 [2022-03-03 19:16:01,938 INFO L226 Difference]: Without dead ends: 1824 [2022-03-03 19:16:01,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=978, Invalid=2804, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 19:16:01,939 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 374 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:01,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 459 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:16:01,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2022-03-03 19:16:01,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1310. [2022-03-03 19:16:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1309 states have (on average 2.5370511841100076) internal successors, (3321), 1309 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 3321 transitions. [2022-03-03 19:16:01,965 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 3321 transitions. Word has length 28 [2022-03-03 19:16:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:01,965 INFO L470 AbstractCegarLoop]: Abstraction has 1310 states and 3321 transitions. [2022-03-03 19:16:01,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:01,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 3321 transitions. [2022-03-03 19:16:01,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:16:01,968 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:01,968 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:01,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:02,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-03 19:16:02,179 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:02,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:02,180 INFO L85 PathProgramCache]: Analyzing trace with hash 788176504, now seen corresponding path program 12 times [2022-03-03 19:16:02,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:02,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571765370] [2022-03-03 19:16:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:02,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:02,281 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:02,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571765370] [2022-03-03 19:16:02,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571765370] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:02,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809513402] [2022-03-03 19:16:02,281 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:16:02,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:02,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:02,282 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:02,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 19:16:02,303 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 19:16:02,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:02,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:16:02,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:02,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:04,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809513402] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:04,073 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:04,073 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:16:04,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026402822] [2022-03-03 19:16:04,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:04,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:04,080 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:04,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:04,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:04,081 INFO L87 Difference]: Start difference. First operand 1310 states and 3321 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:06,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:06,601 INFO L93 Difference]: Finished difference Result 2334 states and 5645 transitions. [2022-03-03 19:16:06,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 19:16:06,601 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:16:06,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:06,607 INFO L225 Difference]: With dead ends: 2334 [2022-03-03 19:16:06,607 INFO L226 Difference]: Without dead ends: 2224 [2022-03-03 19:16:06,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1239, Invalid=3873, Unknown=0, NotChecked=0, Total=5112 [2022-03-03 19:16:06,608 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 400 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:06,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 367 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:16:06,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2022-03-03 19:16:06,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 1470. [2022-03-03 19:16:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 2.5411844792375766) internal successors, (3733), 1469 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 3733 transitions. [2022-03-03 19:16:06,630 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 3733 transitions. Word has length 28 [2022-03-03 19:16:06,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:06,630 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 3733 transitions. [2022-03-03 19:16:06,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:06,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 3733 transitions. [2022-03-03 19:16:06,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:16:06,632 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:06,632 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:06,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:06,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:06,836 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:06,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:06,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2047314868, now seen corresponding path program 13 times [2022-03-03 19:16:06,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:06,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278312146] [2022-03-03 19:16:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:06,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:06,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:06,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278312146] [2022-03-03 19:16:06,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278312146] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:06,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750851214] [2022-03-03 19:16:06,960 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:16:06,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:06,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:06,961 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:06,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 19:16:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:06,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:16:06,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:07,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:08,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750851214] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:08,596 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:08,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:16:08,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086926487] [2022-03-03 19:16:08,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:08,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:08,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:08,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:08,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:08,597 INFO L87 Difference]: Start difference. First operand 1470 states and 3733 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:11,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:11,875 INFO L93 Difference]: Finished difference Result 2440 states and 5944 transitions. [2022-03-03 19:16:11,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 19:16:11,875 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:16:11,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:11,881 INFO L225 Difference]: With dead ends: 2440 [2022-03-03 19:16:11,881 INFO L226 Difference]: Without dead ends: 2366 [2022-03-03 19:16:11,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1497 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1071, Invalid=3621, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 19:16:11,884 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 565 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:11,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 388 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:16:11,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2022-03-03 19:16:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 1718. [2022-03-03 19:16:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1717 states have (on average 2.5538730343622595) internal successors, (4385), 1717 states have internal predecessors, (4385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:11,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 4385 transitions. [2022-03-03 19:16:11,908 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 4385 transitions. Word has length 28 [2022-03-03 19:16:11,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:11,909 INFO L470 AbstractCegarLoop]: Abstraction has 1718 states and 4385 transitions. [2022-03-03 19:16:11,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:11,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 4385 transitions. [2022-03-03 19:16:11,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:16:11,913 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:11,913 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:11,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-03-03 19:16:12,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:12,113 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:12,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2063318904, now seen corresponding path program 14 times [2022-03-03 19:16:12,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:12,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123215720] [2022-03-03 19:16:12,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:12,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:12,211 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:12,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123215720] [2022-03-03 19:16:12,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123215720] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:12,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946541818] [2022-03-03 19:16:12,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:16:12,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:12,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:12,212 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:12,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 19:16:12,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:16:12,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:12,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:16:12,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:12,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:13,983 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:13,983 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946541818] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:13,983 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:13,983 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:16:13,983 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487965165] [2022-03-03 19:16:13,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:13,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:13,984 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:13,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:13,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:13,984 INFO L87 Difference]: Start difference. First operand 1718 states and 4385 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:17,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:17,976 INFO L93 Difference]: Finished difference Result 2818 states and 6914 transitions. [2022-03-03 19:16:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-03 19:16:17,977 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:16:17,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:17,984 INFO L225 Difference]: With dead ends: 2818 [2022-03-03 19:16:17,984 INFO L226 Difference]: Without dead ends: 2692 [2022-03-03 19:16:17,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2328 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1614, Invalid=4866, Unknown=0, NotChecked=0, Total=6480 [2022-03-03 19:16:17,986 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 661 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:17,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 272 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:16:17,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2022-03-03 19:16:18,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1838. [2022-03-03 19:16:18,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1837 states have (on average 2.55688622754491) internal successors, (4697), 1837 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:18,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 4697 transitions. [2022-03-03 19:16:18,013 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 4697 transitions. Word has length 28 [2022-03-03 19:16:18,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:18,013 INFO L470 AbstractCegarLoop]: Abstraction has 1838 states and 4697 transitions. [2022-03-03 19:16:18,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:18,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 4697 transitions. [2022-03-03 19:16:18,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:16:18,016 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:18,016 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:18,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:18,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:18,231 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:18,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:18,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1310847564, now seen corresponding path program 15 times [2022-03-03 19:16:18,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:18,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859987050] [2022-03-03 19:16:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:18,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:18,336 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:18,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859987050] [2022-03-03 19:16:18,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859987050] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:18,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143504028] [2022-03-03 19:16:18,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:16:18,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:18,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:18,337 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:18,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 19:16:18,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-03 19:16:18,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:18,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:16:18,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:18,762 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:18,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:20,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143504028] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:20,026 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:20,026 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:16:20,026 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548867511] [2022-03-03 19:16:20,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:20,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:20,027 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:20,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:20,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:20,027 INFO L87 Difference]: Start difference. First operand 1838 states and 4697 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:23,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:23,586 INFO L93 Difference]: Finished difference Result 2898 states and 7176 transitions. [2022-03-03 19:16:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 19:16:23,587 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:16:23,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:23,592 INFO L225 Difference]: With dead ends: 2898 [2022-03-03 19:16:23,592 INFO L226 Difference]: Without dead ends: 2834 [2022-03-03 19:16:23,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1370, Invalid=4330, Unknown=0, NotChecked=0, Total=5700 [2022-03-03 19:16:23,593 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 559 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:23,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 435 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:16:23,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2022-03-03 19:16:23,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 2110. [2022-03-03 19:16:23,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 2109 states have (on average 2.5723091512565195) internal successors, (5425), 2109 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:23,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 5425 transitions. [2022-03-03 19:16:23,646 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 5425 transitions. Word has length 28 [2022-03-03 19:16:23,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:23,646 INFO L470 AbstractCegarLoop]: Abstraction has 2110 states and 5425 transitions. [2022-03-03 19:16:23,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:23,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 5425 transitions. [2022-03-03 19:16:23,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:16:23,648 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:23,648 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:23,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:23,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:23,849 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:23,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:23,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1123157264, now seen corresponding path program 16 times [2022-03-03 19:16:23,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:23,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353376555] [2022-03-03 19:16:23,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:23,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:23,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:23,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353376555] [2022-03-03 19:16:23,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353376555] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:23,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219176977] [2022-03-03 19:16:23,962 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:16:23,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:23,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:23,963 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:23,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 19:16:23,985 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:16:23,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:23,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:16:23,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:24,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:25,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219176977] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:25,936 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:25,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:16:25,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732833392] [2022-03-03 19:16:25,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:25,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:25,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:25,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:25,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:25,937 INFO L87 Difference]: Start difference. First operand 2110 states and 5425 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:28,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:28,952 INFO L93 Difference]: Finished difference Result 3106 states and 7683 transitions. [2022-03-03 19:16:28,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 19:16:28,953 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:16:28,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:28,956 INFO L225 Difference]: With dead ends: 3106 [2022-03-03 19:16:28,957 INFO L226 Difference]: Without dead ends: 3022 [2022-03-03 19:16:28,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=933, Invalid=3227, Unknown=0, NotChecked=0, Total=4160 [2022-03-03 19:16:28,958 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 399 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:28,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 760 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:16:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2022-03-03 19:16:28,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 2438. [2022-03-03 19:16:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 2437 states have (on average 2.57242511284366) internal successors, (6269), 2437 states have internal predecessors, (6269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 6269 transitions. [2022-03-03 19:16:28,994 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 6269 transitions. Word has length 28 [2022-03-03 19:16:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:28,994 INFO L470 AbstractCegarLoop]: Abstraction has 2438 states and 6269 transitions. [2022-03-03 19:16:28,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 6269 transitions. [2022-03-03 19:16:28,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:16:28,997 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:28,997 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:29,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:29,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-03 19:16:29,214 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:29,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:29,214 INFO L85 PathProgramCache]: Analyzing trace with hash -885481352, now seen corresponding path program 17 times [2022-03-03 19:16:29,214 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:29,214 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698211789] [2022-03-03 19:16:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:29,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:29,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:29,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698211789] [2022-03-03 19:16:29,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698211789] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:29,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193726101] [2022-03-03 19:16:29,413 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:16:29,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:29,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:29,414 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:29,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 19:16:29,435 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 19:16:29,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:29,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 19:16:29,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:29,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:31,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193726101] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:31,215 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:31,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:16:31,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896604072] [2022-03-03 19:16:31,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:31,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:31,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:31,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:31,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:31,216 INFO L87 Difference]: Start difference. First operand 2438 states and 6269 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:33,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:33,602 INFO L93 Difference]: Finished difference Result 3682 states and 9276 transitions. [2022-03-03 19:16:33,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 19:16:33,602 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:16:33,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:33,608 INFO L225 Difference]: With dead ends: 3682 [2022-03-03 19:16:33,608 INFO L226 Difference]: Without dead ends: 3590 [2022-03-03 19:16:33,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=881, Invalid=2659, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 19:16:33,609 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 412 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:33,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 204 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:16:33,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2022-03-03 19:16:33,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 2646. [2022-03-03 19:16:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2646 states, 2645 states have (on average 2.568241965973535) internal successors, (6793), 2645 states have internal predecessors, (6793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:33,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 6793 transitions. [2022-03-03 19:16:33,650 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 6793 transitions. Word has length 28 [2022-03-03 19:16:33,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:33,650 INFO L470 AbstractCegarLoop]: Abstraction has 2646 states and 6793 transitions. [2022-03-03 19:16:33,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 6793 transitions. [2022-03-03 19:16:33,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:16:33,654 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:33,654 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:33,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-03-03 19:16:33,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-03-03 19:16:33,867 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:33,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:33,868 INFO L85 PathProgramCache]: Analyzing trace with hash 204761644, now seen corresponding path program 18 times [2022-03-03 19:16:33,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:33,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800139911] [2022-03-03 19:16:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:33,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:33,988 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:33,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800139911] [2022-03-03 19:16:33,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800139911] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:33,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773235082] [2022-03-03 19:16:33,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:16:33,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:33,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:33,990 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:33,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 19:16:34,010 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 19:16:34,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:34,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:16:34,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:34,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:35,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773235082] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:35,874 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:35,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:16:35,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893482580] [2022-03-03 19:16:35,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:35,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:35,875 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:35,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:35,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:35,876 INFO L87 Difference]: Start difference. First operand 2646 states and 6793 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:38,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:38,491 INFO L93 Difference]: Finished difference Result 3822 states and 9561 transitions. [2022-03-03 19:16:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 19:16:38,492 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:16:38,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:38,498 INFO L225 Difference]: With dead ends: 3822 [2022-03-03 19:16:38,498 INFO L226 Difference]: Without dead ends: 3718 [2022-03-03 19:16:38,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1216 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=959, Invalid=2947, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 19:16:38,499 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 439 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:38,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 418 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:16:38,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2022-03-03 19:16:38,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 2982. [2022-03-03 19:16:38,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2981 states have (on average 2.5645756457564577) internal successors, (7645), 2981 states have internal predecessors, (7645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:38,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 7645 transitions. [2022-03-03 19:16:38,547 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 7645 transitions. Word has length 28 [2022-03-03 19:16:38,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:38,547 INFO L470 AbstractCegarLoop]: Abstraction has 2982 states and 7645 transitions. [2022-03-03 19:16:38,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:38,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 7645 transitions. [2022-03-03 19:16:38,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:16:38,551 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:38,551 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:38,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:38,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:38,767 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:38,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:38,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1066045388, now seen corresponding path program 19 times [2022-03-03 19:16:38,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:38,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270610110] [2022-03-03 19:16:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:38,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:38,884 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:38,884 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:38,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270610110] [2022-03-03 19:16:38,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270610110] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:38,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555784694] [2022-03-03 19:16:38,884 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:16:38,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:38,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:38,885 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:38,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 19:16:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:38,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:16:38,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:39,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:40,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555784694] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:40,969 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:40,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:16:40,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368668154] [2022-03-03 19:16:40,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:40,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:40,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:40,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:40,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:40,970 INFO L87 Difference]: Start difference. First operand 2982 states and 7645 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:43,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:43,441 INFO L93 Difference]: Finished difference Result 3928 states and 9785 transitions. [2022-03-03 19:16:43,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 19:16:43,442 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:16:43,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:43,448 INFO L225 Difference]: With dead ends: 3928 [2022-03-03 19:16:43,448 INFO L226 Difference]: Without dead ends: 3832 [2022-03-03 19:16:43,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=849, Invalid=2691, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 19:16:43,448 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 417 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:43,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 345 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:16:43,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2022-03-03 19:16:43,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 3286. [2022-03-03 19:16:43,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3286 states, 3285 states have (on average 2.5634703196347033) internal successors, (8421), 3285 states have internal predecessors, (8421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:43,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 8421 transitions. [2022-03-03 19:16:43,492 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 8421 transitions. Word has length 28 [2022-03-03 19:16:43,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:43,493 INFO L470 AbstractCegarLoop]: Abstraction has 3286 states and 8421 transitions. [2022-03-03 19:16:43,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:43,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 8421 transitions. [2022-03-03 19:16:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:16:43,497 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:43,498 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:43,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:43,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:43,707 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:43,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:43,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1292213744, now seen corresponding path program 20 times [2022-03-03 19:16:43,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:43,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674437457] [2022-03-03 19:16:43,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:43,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:43,819 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:43,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674437457] [2022-03-03 19:16:43,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674437457] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:43,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695601970] [2022-03-03 19:16:43,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:16:43,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:43,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:43,822 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:43,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 19:16:43,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:16:43,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:43,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:16:43,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:44,251 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:44,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:45,596 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:45,597 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695601970] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:45,597 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:45,597 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:16:45,597 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897895069] [2022-03-03 19:16:45,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:45,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:45,597 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:45,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:45,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:45,598 INFO L87 Difference]: Start difference. First operand 3286 states and 8421 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:48,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:48,692 INFO L93 Difference]: Finished difference Result 4260 states and 10673 transitions. [2022-03-03 19:16:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 19:16:48,692 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:16:48,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:48,698 INFO L225 Difference]: With dead ends: 4260 [2022-03-03 19:16:48,698 INFO L226 Difference]: Without dead ends: 4186 [2022-03-03 19:16:48,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1436 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1000, Invalid=3422, Unknown=0, NotChecked=0, Total=4422 [2022-03-03 19:16:48,698 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 408 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:48,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 581 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:16:48,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4186 states. [2022-03-03 19:16:48,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4186 to 3502. [2022-03-03 19:16:48,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3502 states, 3501 states have (on average 2.5664095972579264) internal successors, (8985), 3501 states have internal predecessors, (8985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:48,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 8985 transitions. [2022-03-03 19:16:48,749 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 8985 transitions. Word has length 28 [2022-03-03 19:16:48,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:48,749 INFO L470 AbstractCegarLoop]: Abstraction has 3502 states and 8985 transitions. [2022-03-03 19:16:48,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:48,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 8985 transitions. [2022-03-03 19:16:48,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:16:48,754 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:48,754 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:48,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:48,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-03 19:16:48,967 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:48,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:48,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1467256516, now seen corresponding path program 21 times [2022-03-03 19:16:48,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:48,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594476964] [2022-03-03 19:16:48,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:48,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:49,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:49,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594476964] [2022-03-03 19:16:49,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594476964] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:49,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124974028] [2022-03-03 19:16:49,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:16:49,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:49,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:49,067 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:49,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 19:16:49,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-03 19:16:49,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:49,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:16:49,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:49,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:50,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124974028] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:50,106 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:50,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:16:50,106 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581451616] [2022-03-03 19:16:50,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:50,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:50,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:50,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:50,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:50,107 INFO L87 Difference]: Start difference. First operand 3502 states and 8985 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:51,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:51,502 INFO L93 Difference]: Finished difference Result 4090 states and 10265 transitions. [2022-03-03 19:16:51,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 19:16:51,503 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:16:51,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:51,508 INFO L225 Difference]: With dead ends: 4090 [2022-03-03 19:16:51,508 INFO L226 Difference]: Without dead ends: 3968 [2022-03-03 19:16:51,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=862, Invalid=2444, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 19:16:51,509 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 309 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:51,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 494 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:16:51,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2022-03-03 19:16:51,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3646. [2022-03-03 19:16:51,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 2.564883401920439) internal successors, (9349), 3645 states have internal predecessors, (9349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 9349 transitions. [2022-03-03 19:16:51,551 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 9349 transitions. Word has length 28 [2022-03-03 19:16:51,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:51,551 INFO L470 AbstractCegarLoop]: Abstraction has 3646 states and 9349 transitions. [2022-03-03 19:16:51,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:51,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 9349 transitions. [2022-03-03 19:16:51,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:16:51,556 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:51,556 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:51,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-03-03 19:16:51,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-03 19:16:51,772 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:51,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:51,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1273274488, now seen corresponding path program 22 times [2022-03-03 19:16:51,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:51,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036575346] [2022-03-03 19:16:51,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:51,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:51,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:51,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036575346] [2022-03-03 19:16:51,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036575346] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:51,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750173844] [2022-03-03 19:16:51,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:16:51,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:51,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:51,885 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:51,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 19:16:51,904 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:16:51,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:51,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:16:51,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:52,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:52,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750173844] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:52,964 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:52,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:16:52,964 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475527769] [2022-03-03 19:16:52,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:52,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:52,965 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:52,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:52,965 INFO L87 Difference]: Start difference. First operand 3646 states and 9349 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:54,211 INFO L93 Difference]: Finished difference Result 4292 states and 10764 transitions. [2022-03-03 19:16:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 19:16:54,211 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:16:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:54,216 INFO L225 Difference]: With dead ends: 4292 [2022-03-03 19:16:54,217 INFO L226 Difference]: Without dead ends: 4166 [2022-03-03 19:16:54,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=862, Invalid=2444, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 19:16:54,217 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 397 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:54,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 224 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:16:54,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2022-03-03 19:16:54,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 3830. [2022-03-03 19:16:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3830 states, 3829 states have (on average 2.561765474014103) internal successors, (9809), 3829 states have internal predecessors, (9809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3830 states to 3830 states and 9809 transitions. [2022-03-03 19:16:54,272 INFO L78 Accepts]: Start accepts. Automaton has 3830 states and 9809 transitions. Word has length 28 [2022-03-03 19:16:54,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:54,272 INFO L470 AbstractCegarLoop]: Abstraction has 3830 states and 9809 transitions. [2022-03-03 19:16:54,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:54,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3830 states and 9809 transitions. [2022-03-03 19:16:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:16:54,277 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:54,277 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:54,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:54,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-03 19:16:54,491 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:54,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:54,492 INFO L85 PathProgramCache]: Analyzing trace with hash -184676044, now seen corresponding path program 23 times [2022-03-03 19:16:54,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:54,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165326308] [2022-03-03 19:16:54,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:54,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:54,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:54,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165326308] [2022-03-03 19:16:54,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165326308] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:54,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196875810] [2022-03-03 19:16:54,608 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:16:54,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:54,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:54,609 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:54,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 19:16:54,631 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 19:16:54,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:54,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:16:54,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:16:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:55,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:16:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:56,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196875810] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:16:56,489 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:16:56,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:16:56,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456260382] [2022-03-03 19:16:56,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:16:56,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:16:56,489 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:16:56,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:16:56,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:16:56,490 INFO L87 Difference]: Start difference. First operand 3830 states and 9809 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:59,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:16:59,277 INFO L93 Difference]: Finished difference Result 5008 states and 12582 transitions. [2022-03-03 19:16:59,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 19:16:59,277 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:16:59,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:16:59,283 INFO L225 Difference]: With dead ends: 5008 [2022-03-03 19:16:59,283 INFO L226 Difference]: Without dead ends: 4874 [2022-03-03 19:16:59,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1234 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=959, Invalid=2947, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 19:16:59,284 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 464 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:16:59,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 213 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:16:59,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2022-03-03 19:16:59,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4150. [2022-03-03 19:16:59,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4150 states, 4149 states have (on average 2.559893950349482) internal successors, (10621), 4149 states have internal predecessors, (10621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4150 states to 4150 states and 10621 transitions. [2022-03-03 19:16:59,337 INFO L78 Accepts]: Start accepts. Automaton has 4150 states and 10621 transitions. Word has length 28 [2022-03-03 19:16:59,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:16:59,337 INFO L470 AbstractCegarLoop]: Abstraction has 4150 states and 10621 transitions. [2022-03-03 19:16:59,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:16:59,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4150 states and 10621 transitions. [2022-03-03 19:16:59,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:16:59,342 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:16:59,342 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:16:59,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-03 19:16:59,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:59,555 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:16:59,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:16:59,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2121384208, now seen corresponding path program 24 times [2022-03-03 19:16:59,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:16:59,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174416607] [2022-03-03 19:16:59,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:16:59,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:16:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:16:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:16:59,652 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:16:59,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174416607] [2022-03-03 19:16:59,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174416607] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:16:59,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265613143] [2022-03-03 19:16:59,652 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:16:59,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:16:59,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:16:59,653 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:16:59,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 19:16:59,673 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 19:16:59,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:16:59,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:16:59,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:00,051 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:00,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:01,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265613143] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:01,518 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:01,518 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:17:01,518 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18807567] [2022-03-03 19:17:01,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:01,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:01,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:01,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:01,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:01,519 INFO L87 Difference]: Start difference. First operand 4150 states and 10621 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:04,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:04,056 INFO L93 Difference]: Finished difference Result 5174 states and 13049 transitions. [2022-03-03 19:17:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 19:17:04,056 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:17:04,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:04,063 INFO L225 Difference]: With dead ends: 5174 [2022-03-03 19:17:04,063 INFO L226 Difference]: Without dead ends: 5094 [2022-03-03 19:17:04,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1003, Invalid=2903, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 19:17:04,066 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 411 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:04,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 182 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:17:04,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5094 states. [2022-03-03 19:17:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5094 to 4286. [2022-03-03 19:17:04,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4285 states have (on average 2.551458576429405) internal successors, (10933), 4285 states have internal predecessors, (10933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 10933 transitions. [2022-03-03 19:17:04,121 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 10933 transitions. Word has length 28 [2022-03-03 19:17:04,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:04,121 INFO L470 AbstractCegarLoop]: Abstraction has 4286 states and 10933 transitions. [2022-03-03 19:17:04,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 10933 transitions. [2022-03-03 19:17:04,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:17:04,127 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:04,127 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:04,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-03 19:17:04,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:04,335 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:04,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:04,336 INFO L85 PathProgramCache]: Analyzing trace with hash 607547956, now seen corresponding path program 25 times [2022-03-03 19:17:04,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:04,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914815927] [2022-03-03 19:17:04,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:04,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:04,441 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:04,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914815927] [2022-03-03 19:17:04,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914815927] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:04,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672580918] [2022-03-03 19:17:04,441 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:17:04,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:04,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:04,442 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:04,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 19:17:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:04,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:17:04,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:04,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:05,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672580918] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:05,912 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:05,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:17:05,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113420063] [2022-03-03 19:17:05,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:05,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:05,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:05,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:05,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:05,912 INFO L87 Difference]: Start difference. First operand 4286 states and 10933 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:08,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:08,555 INFO L93 Difference]: Finished difference Result 5602 states and 14096 transitions. [2022-03-03 19:17:08,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 19:17:08,555 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:17:08,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:08,560 INFO L225 Difference]: With dead ends: 5602 [2022-03-03 19:17:08,561 INFO L226 Difference]: Without dead ends: 5500 [2022-03-03 19:17:08,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1447 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1084, Invalid=3206, Unknown=0, NotChecked=0, Total=4290 [2022-03-03 19:17:08,561 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 332 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:08,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 438 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:17:08,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5500 states. [2022-03-03 19:17:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5500 to 4678. [2022-03-03 19:17:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4678 states, 4677 states have (on average 2.5514218516142826) internal successors, (11933), 4677 states have internal predecessors, (11933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4678 states to 4678 states and 11933 transitions. [2022-03-03 19:17:08,613 INFO L78 Accepts]: Start accepts. Automaton has 4678 states and 11933 transitions. Word has length 28 [2022-03-03 19:17:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:08,613 INFO L470 AbstractCegarLoop]: Abstraction has 4678 states and 11933 transitions. [2022-03-03 19:17:08,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:08,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4678 states and 11933 transitions. [2022-03-03 19:17:08,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:17:08,620 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:08,620 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:08,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:08,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:08,820 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:08,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:08,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1143242864, now seen corresponding path program 26 times [2022-03-03 19:17:08,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:08,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828941186] [2022-03-03 19:17:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:08,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:08,937 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:08,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828941186] [2022-03-03 19:17:08,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828941186] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:08,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120024841] [2022-03-03 19:17:08,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:17:08,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:08,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:08,938 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:08,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 19:17:08,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:17:08,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:08,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:17:08,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:09,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:10,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120024841] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:10,960 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:10,960 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:17:10,960 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995155828] [2022-03-03 19:17:10,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:10,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:10,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:10,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:10,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:10,961 INFO L87 Difference]: Start difference. First operand 4678 states and 11933 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:13,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:13,793 INFO L93 Difference]: Finished difference Result 5870 states and 14709 transitions. [2022-03-03 19:17:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 19:17:13,794 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:17:13,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:13,801 INFO L225 Difference]: With dead ends: 5870 [2022-03-03 19:17:13,801 INFO L226 Difference]: Without dead ends: 5786 [2022-03-03 19:17:13,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=933, Invalid=3227, Unknown=0, NotChecked=0, Total=4160 [2022-03-03 19:17:13,810 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 444 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:13,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 385 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:17:13,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2022-03-03 19:17:13,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 5046. [2022-03-03 19:17:13,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5046 states, 5045 states have (on average 2.554806739345887) internal successors, (12889), 5045 states have internal predecessors, (12889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:13,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5046 states to 5046 states and 12889 transitions. [2022-03-03 19:17:13,869 INFO L78 Accepts]: Start accepts. Automaton has 5046 states and 12889 transitions. Word has length 28 [2022-03-03 19:17:13,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:13,869 INFO L470 AbstractCegarLoop]: Abstraction has 5046 states and 12889 transitions. [2022-03-03 19:17:13,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:13,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5046 states and 12889 transitions. [2022-03-03 19:17:13,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-03 19:17:13,875 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:13,875 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:13,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:14,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-03-03 19:17:14,076 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:14,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1113554704, now seen corresponding path program 27 times [2022-03-03 19:17:14,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:14,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288193466] [2022-03-03 19:17:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:14,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:14,192 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:14,192 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:14,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288193466] [2022-03-03 19:17:14,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288193466] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:14,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089733813] [2022-03-03 19:17:14,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:17:14,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:14,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:14,193 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:14,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 19:17:14,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 19:17:14,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:14,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 19:17:14,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:14,541 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:14,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:15,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089733813] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:15,839 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:15,840 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 19:17:15,840 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332780710] [2022-03-03 19:17:15,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:15,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 19:17:15,840 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:15,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 19:17:15,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2022-03-03 19:17:15,840 INFO L87 Difference]: Start difference. First operand 5046 states and 12889 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:18,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:18,393 INFO L93 Difference]: Finished difference Result 5700 states and 14420 transitions. [2022-03-03 19:17:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 19:17:18,393 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-03 19:17:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:18,400 INFO L225 Difference]: With dead ends: 5700 [2022-03-03 19:17:18,400 INFO L226 Difference]: Without dead ends: 5622 [2022-03-03 19:17:18,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1469 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1031, Invalid=3391, Unknown=0, NotChecked=0, Total=4422 [2022-03-03 19:17:18,403 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 314 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:18,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 300 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 19:17:18,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5622 states. [2022-03-03 19:17:18,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5622 to 5102. [2022-03-03 19:17:18,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5102 states, 5101 states have (on average 2.5526367378945305) internal successors, (13021), 5101 states have internal predecessors, (13021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:18,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 13021 transitions. [2022-03-03 19:17:18,465 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 13021 transitions. Word has length 28 [2022-03-03 19:17:18,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:18,465 INFO L470 AbstractCegarLoop]: Abstraction has 5102 states and 13021 transitions. [2022-03-03 19:17:18,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 13021 transitions. [2022-03-03 19:17:18,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-03 19:17:18,472 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:18,472 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:18,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-03 19:17:18,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:18,672 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:18,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:18,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1268612662, now seen corresponding path program 28 times [2022-03-03 19:17:18,673 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:18,673 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521650829] [2022-03-03 19:17:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:18,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:18,867 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:18,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521650829] [2022-03-03 19:17:18,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521650829] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:18,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770278797] [2022-03-03 19:17:18,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:17:18,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:18,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:18,868 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:18,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 19:17:18,888 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:17:18,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:18,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 19:17:18,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:19,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:21,065 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:21,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770278797] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:21,065 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:21,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-03 19:17:21,066 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576165549] [2022-03-03 19:17:21,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:21,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 19:17:21,066 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:21,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 19:17:21,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=605, Unknown=0, NotChecked=0, Total=812 [2022-03-03 19:17:21,066 INFO L87 Difference]: Start difference. First operand 5102 states and 13021 transitions. Second operand has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:25,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:25,639 INFO L93 Difference]: Finished difference Result 7502 states and 18791 transitions. [2022-03-03 19:17:25,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-03 19:17:25,639 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-03-03 19:17:25,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:25,649 INFO L225 Difference]: With dead ends: 7502 [2022-03-03 19:17:25,650 INFO L226 Difference]: Without dead ends: 7380 [2022-03-03 19:17:25,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2791 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1877, Invalid=5779, Unknown=0, NotChecked=0, Total=7656 [2022-03-03 19:17:25,651 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 787 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:25,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 510 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:17:25,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7380 states. [2022-03-03 19:17:25,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7380 to 5582. [2022-03-03 19:17:25,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5582 states, 5581 states have (on average 2.5595771367138505) internal successors, (14285), 5581 states have internal predecessors, (14285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5582 states to 5582 states and 14285 transitions. [2022-03-03 19:17:25,724 INFO L78 Accepts]: Start accepts. Automaton has 5582 states and 14285 transitions. Word has length 30 [2022-03-03 19:17:25,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:25,725 INFO L470 AbstractCegarLoop]: Abstraction has 5582 states and 14285 transitions. [2022-03-03 19:17:25,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5582 states and 14285 transitions. [2022-03-03 19:17:25,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-03 19:17:25,731 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:25,731 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:25,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:25,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:25,932 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:25,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:25,932 INFO L85 PathProgramCache]: Analyzing trace with hash 800243502, now seen corresponding path program 29 times [2022-03-03 19:17:25,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:25,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644533027] [2022-03-03 19:17:25,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:25,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:26,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:26,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644533027] [2022-03-03 19:17:26,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644533027] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:26,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535679025] [2022-03-03 19:17:26,111 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:17:26,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:26,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:26,112 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:26,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 19:17:26,134 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-03 19:17:26,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:26,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 19:17:26,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:26,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:28,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535679025] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:28,522 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:28,522 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:28,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499105260] [2022-03-03 19:17:28,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:28,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:17:28,523 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:28,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:17:28,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:17:28,523 INFO L87 Difference]: Start difference. First operand 5582 states and 14285 transitions. Second operand has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:32,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:32,617 INFO L93 Difference]: Finished difference Result 6534 states and 16480 transitions. [2022-03-03 19:17:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 19:17:32,617 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-03-03 19:17:32,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:32,626 INFO L225 Difference]: With dead ends: 6534 [2022-03-03 19:17:32,626 INFO L226 Difference]: Without dead ends: 6464 [2022-03-03 19:17:32,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1445 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1104, Invalid=3186, Unknown=0, NotChecked=0, Total=4290 [2022-03-03 19:17:32,627 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 342 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:32,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 526 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:17:32,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6464 states. [2022-03-03 19:17:32,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6464 to 5766. [2022-03-03 19:17:32,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5766 states, 5765 states have (on average 2.5611448395490024) internal successors, (14765), 5765 states have internal predecessors, (14765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:32,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 14765 transitions. [2022-03-03 19:17:32,694 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 14765 transitions. Word has length 30 [2022-03-03 19:17:32,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:32,694 INFO L470 AbstractCegarLoop]: Abstraction has 5766 states and 14765 transitions. [2022-03-03 19:17:32,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:32,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 14765 transitions. [2022-03-03 19:17:32,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-03 19:17:32,700 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:32,700 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:32,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:32,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-03-03 19:17:32,901 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:32,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:32,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2101013390, now seen corresponding path program 30 times [2022-03-03 19:17:32,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:32,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373050112] [2022-03-03 19:17:32,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:32,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:33,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:33,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373050112] [2022-03-03 19:17:33,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373050112] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:33,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32299602] [2022-03-03 19:17:33,054 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:17:33,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:33,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:33,056 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:33,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-03 19:17:33,078 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-03-03 19:17:33,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:33,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 19:17:33,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:33,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:34,663 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32299602] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:34,663 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:34,663 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-03-03 19:17:34,663 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366853176] [2022-03-03 19:17:34,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:34,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 19:17:34,664 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:34,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 19:17:34,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=548, Unknown=0, NotChecked=0, Total=756 [2022-03-03 19:17:34,664 INFO L87 Difference]: Start difference. First operand 5766 states and 14765 transitions. Second operand has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:37,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:37,313 INFO L93 Difference]: Finished difference Result 6930 states and 17528 transitions. [2022-03-03 19:17:37,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 19:17:37,314 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-03-03 19:17:37,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:37,322 INFO L225 Difference]: With dead ends: 6930 [2022-03-03 19:17:37,322 INFO L226 Difference]: Without dead ends: 6796 [2022-03-03 19:17:37,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1852 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1526, Invalid=3876, Unknown=0, NotChecked=0, Total=5402 [2022-03-03 19:17:37,323 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 280 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:37,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 485 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:17:37,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6796 states. [2022-03-03 19:17:37,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6796 to 6062. [2022-03-03 19:17:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6062 states, 6061 states have (on average 2.5621184622999507) internal successors, (15529), 6061 states have internal predecessors, (15529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6062 states to 6062 states and 15529 transitions. [2022-03-03 19:17:37,396 INFO L78 Accepts]: Start accepts. Automaton has 6062 states and 15529 transitions. Word has length 30 [2022-03-03 19:17:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:37,396 INFO L470 AbstractCegarLoop]: Abstraction has 6062 states and 15529 transitions. [2022-03-03 19:17:37,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 27 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand 6062 states and 15529 transitions. [2022-03-03 19:17:37,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:17:37,402 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:37,402 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:37,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:37,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-03 19:17:37,603 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:37,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:37,604 INFO L85 PathProgramCache]: Analyzing trace with hash -781398984, now seen corresponding path program 31 times [2022-03-03 19:17:37,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:37,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527426521] [2022-03-03 19:17:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:37,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:38,861 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:38,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527426521] [2022-03-03 19:17:38,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527426521] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:38,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88483224] [2022-03-03 19:17:38,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:17:38,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:38,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:38,862 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:38,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-03 19:17:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:38,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:17:38,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:39,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:41,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88483224] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:41,866 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:41,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:17:41,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760289709] [2022-03-03 19:17:41,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:41,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:17:41,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:41,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:17:41,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=790, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:17:41,867 INFO L87 Difference]: Start difference. First operand 6062 states and 15529 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:48,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:48,354 INFO L93 Difference]: Finished difference Result 7628 states and 19207 transitions. [2022-03-03 19:17:48,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 19:17:48,367 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:17:48,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:48,376 INFO L225 Difference]: With dead ends: 7628 [2022-03-03 19:17:48,376 INFO L226 Difference]: Without dead ends: 7546 [2022-03-03 19:17:48,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2438 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1693, Invalid=5789, Unknown=0, NotChecked=0, Total=7482 [2022-03-03 19:17:48,377 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 760 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:48,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 386 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:17:48,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7546 states. [2022-03-03 19:17:48,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7546 to 6510. [2022-03-03 19:17:48,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6510 states, 6509 states have (on average 2.56460285758181) internal successors, (16693), 6509 states have internal predecessors, (16693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6510 states to 6510 states and 16693 transitions. [2022-03-03 19:17:48,502 INFO L78 Accepts]: Start accepts. Automaton has 6510 states and 16693 transitions. Word has length 32 [2022-03-03 19:17:48,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:48,502 INFO L470 AbstractCegarLoop]: Abstraction has 6510 states and 16693 transitions. [2022-03-03 19:17:48,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:48,502 INFO L276 IsEmpty]: Start isEmpty. Operand 6510 states and 16693 transitions. [2022-03-03 19:17:48,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:17:48,509 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:48,509 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:48,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:48,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-03 19:17:48,710 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:48,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:48,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1759842880, now seen corresponding path program 32 times [2022-03-03 19:17:48,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:48,710 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010120349] [2022-03-03 19:17:48,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:48,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:17:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:49,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:17:49,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010120349] [2022-03-03 19:17:49,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010120349] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:17:49,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468261477] [2022-03-03 19:17:49,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:17:49,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:17:49,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:17:49,112 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 19:17:49,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-03 19:17:49,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:17:49,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:17:49,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:17:49,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:17:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:49,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:17:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:17:51,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468261477] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:17:51,820 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:17:51,820 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:17:51,820 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135856909] [2022-03-03 19:17:51,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:17:51,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:17:51,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:17:51,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:17:51,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:17:51,821 INFO L87 Difference]: Start difference. First operand 6510 states and 16693 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:55,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:17:55,827 INFO L93 Difference]: Finished difference Result 7654 states and 19272 transitions. [2022-03-03 19:17:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 19:17:55,828 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:17:55,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:17:55,838 INFO L225 Difference]: With dead ends: 7654 [2022-03-03 19:17:55,838 INFO L226 Difference]: Without dead ends: 7574 [2022-03-03 19:17:55,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2548 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1716, Invalid=5766, Unknown=0, NotChecked=0, Total=7482 [2022-03-03 19:17:55,841 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 686 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:17:55,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 367 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:17:55,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7574 states. [2022-03-03 19:17:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7574 to 6630. [2022-03-03 19:17:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6630 states, 6629 states have (on average 2.565847035751999) internal successors, (17009), 6629 states have internal predecessors, (17009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6630 states to 6630 states and 17009 transitions. [2022-03-03 19:17:55,935 INFO L78 Accepts]: Start accepts. Automaton has 6630 states and 17009 transitions. Word has length 32 [2022-03-03 19:17:55,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:17:55,935 INFO L470 AbstractCegarLoop]: Abstraction has 6630 states and 17009 transitions. [2022-03-03 19:17:55,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:17:55,935 INFO L276 IsEmpty]: Start isEmpty. Operand 6630 states and 17009 transitions. [2022-03-03 19:17:55,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:17:55,943 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:17:55,943 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:17:55,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-03 19:17:56,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-03 19:17:56,155 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:17:56,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:17:56,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1119736520, now seen corresponding path program 33 times [2022-03-03 19:17:56,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:17:56,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205193402] [2022-03-03 19:17:56,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:17:56,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:17:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:04,836 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:04,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:04,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205193402] [2022-03-03 19:18:04,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205193402] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:04,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753742261] [2022-03-03 19:18:04,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:18:04,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:04,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:04,838 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) [2022-03-03 19:18:04,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-03 19:18:04,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-03-03 19:18:04,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:04,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:18:04,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:05,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:07,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753742261] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:07,954 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:07,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:18:07,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924808186] [2022-03-03 19:18:07,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:07,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:18:07,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:07,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:18:07,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=791, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:18:07,956 INFO L87 Difference]: Start difference. First operand 6630 states and 17009 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:15,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:15,912 INFO L93 Difference]: Finished difference Result 8322 states and 21006 transitions. [2022-03-03 19:18:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-03 19:18:15,913 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:18:15,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:15,923 INFO L225 Difference]: With dead ends: 8322 [2022-03-03 19:18:15,923 INFO L226 Difference]: Without dead ends: 8194 [2022-03-03 19:18:15,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3225 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=2084, Invalid=7228, Unknown=0, NotChecked=0, Total=9312 [2022-03-03 19:18:15,924 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 635 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:15,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 484 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:18:15,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8194 states. [2022-03-03 19:18:16,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8194 to 6966. [2022-03-03 19:18:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6966 states, 6965 states have (on average 2.570710696338837) internal successors, (17905), 6965 states have internal predecessors, (17905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:16,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6966 states to 6966 states and 17905 transitions. [2022-03-03 19:18:16,028 INFO L78 Accepts]: Start accepts. Automaton has 6966 states and 17905 transitions. Word has length 32 [2022-03-03 19:18:16,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:16,028 INFO L470 AbstractCegarLoop]: Abstraction has 6966 states and 17905 transitions. [2022-03-03 19:18:16,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:16,029 INFO L276 IsEmpty]: Start isEmpty. Operand 6966 states and 17905 transitions. [2022-03-03 19:18:16,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:18:16,036 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:16,036 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:16,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-03 19:18:16,236 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,SelfDestructingSolverStorable39 [2022-03-03 19:18:16,237 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:16,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:16,237 INFO L85 PathProgramCache]: Analyzing trace with hash -407118220, now seen corresponding path program 34 times [2022-03-03 19:18:16,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:16,237 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655376197] [2022-03-03 19:18:16,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:16,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:19,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:19,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655376197] [2022-03-03 19:18:19,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655376197] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:19,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925719426] [2022-03-03 19:18:19,201 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:18:19,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:19,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:19,202 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) [2022-03-03 19:18:19,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-03 19:18:19,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:18:19,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:19,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:18:19,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:19,848 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:19,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:22,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925719426] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:22,441 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:22,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:18:22,441 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708192316] [2022-03-03 19:18:22,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:22,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:18:22,441 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:22,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:18:22,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:18:22,441 INFO L87 Difference]: Start difference. First operand 6966 states and 17905 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:28,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:28,820 INFO L93 Difference]: Finished difference Result 8730 states and 22145 transitions. [2022-03-03 19:18:28,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-03 19:18:28,821 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:18:28,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:28,832 INFO L225 Difference]: With dead ends: 8730 [2022-03-03 19:18:28,832 INFO L226 Difference]: Without dead ends: 8590 [2022-03-03 19:18:28,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3019 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1884, Invalid=6858, Unknown=0, NotChecked=0, Total=8742 [2022-03-03 19:18:28,833 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 647 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:28,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 664 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 19:18:28,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8590 states. [2022-03-03 19:18:28,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8590 to 7366. [2022-03-03 19:18:28,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7366 states, 7365 states have (on average 2.571215207060421) internal successors, (18937), 7365 states have internal predecessors, (18937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:28,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7366 states to 7366 states and 18937 transitions. [2022-03-03 19:18:28,958 INFO L78 Accepts]: Start accepts. Automaton has 7366 states and 18937 transitions. Word has length 32 [2022-03-03 19:18:28,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:28,959 INFO L470 AbstractCegarLoop]: Abstraction has 7366 states and 18937 transitions. [2022-03-03 19:18:28,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:28,959 INFO L276 IsEmpty]: Start isEmpty. Operand 7366 states and 18937 transitions. [2022-03-03 19:18:28,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:18:28,967 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:28,967 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:28,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-03-03 19:18:29,176 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,SelfDestructingSolverStorable40 [2022-03-03 19:18:29,176 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:29,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:29,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1419210312, now seen corresponding path program 35 times [2022-03-03 19:18:29,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:29,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686854146] [2022-03-03 19:18:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:29,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:29,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:29,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686854146] [2022-03-03 19:18:29,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686854146] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:29,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514942182] [2022-03-03 19:18:29,700 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:18:29,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:29,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:29,701 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) [2022-03-03 19:18:29,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-03 19:18:29,724 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-03 19:18:29,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:29,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:18:29,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:30,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:33,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514942182] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:33,047 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:33,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:18:33,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604424646] [2022-03-03 19:18:33,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:33,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:18:33,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:33,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:18:33,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=789, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:18:33,048 INFO L87 Difference]: Start difference. First operand 7366 states and 18937 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:42,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:42,386 INFO L93 Difference]: Finished difference Result 10252 states and 25924 transitions. [2022-03-03 19:18:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-03-03 19:18:42,386 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:18:42,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:42,397 INFO L225 Difference]: With dead ends: 10252 [2022-03-03 19:18:42,397 INFO L226 Difference]: Without dead ends: 10084 [2022-03-03 19:18:42,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4049 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=2494, Invalid=8426, Unknown=0, NotChecked=0, Total=10920 [2022-03-03 19:18:42,398 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 867 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:42,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 730 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:18:42,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10084 states. [2022-03-03 19:18:42,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10084 to 8494. [2022-03-03 19:18:42,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8494 states, 8493 states have (on average 2.571176262804663) internal successors, (21837), 8493 states have internal predecessors, (21837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8494 states to 8494 states and 21837 transitions. [2022-03-03 19:18:42,510 INFO L78 Accepts]: Start accepts. Automaton has 8494 states and 21837 transitions. Word has length 32 [2022-03-03 19:18:42,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:42,510 INFO L470 AbstractCegarLoop]: Abstraction has 8494 states and 21837 transitions. [2022-03-03 19:18:42,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:42,510 INFO L276 IsEmpty]: Start isEmpty. Operand 8494 states and 21837 transitions. [2022-03-03 19:18:42,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:18:42,520 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:42,520 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:42,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-03 19:18:42,733 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,SelfDestructingSolverStorable41 [2022-03-03 19:18:42,734 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:42,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:42,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1874837644, now seen corresponding path program 36 times [2022-03-03 19:18:42,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:42,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669163410] [2022-03-03 19:18:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:42,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:42,915 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:42,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669163410] [2022-03-03 19:18:42,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669163410] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:42,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870330405] [2022-03-03 19:18:42,915 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:18:42,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:42,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:42,916 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) [2022-03-03 19:18:42,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-03 19:18:42,938 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-03-03 19:18:42,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:18:42,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:18:42,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:43,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:46,418 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:46,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870330405] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:46,418 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:46,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:18:46,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977028502] [2022-03-03 19:18:46,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:46,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:18:46,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:46,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:18:46,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:18:46,421 INFO L87 Difference]: Start difference. First operand 8494 states and 21837 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:51,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:18:51,884 INFO L93 Difference]: Finished difference Result 10172 states and 25898 transitions. [2022-03-03 19:18:51,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 19:18:51,884 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:18:51,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:18:51,898 INFO L225 Difference]: With dead ends: 10172 [2022-03-03 19:18:51,898 INFO L226 Difference]: Without dead ends: 10094 [2022-03-03 19:18:51,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1702 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1151, Invalid=4251, Unknown=0, NotChecked=0, Total=5402 [2022-03-03 19:18:51,899 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 499 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:18:51,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 410 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:18:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10094 states. [2022-03-03 19:18:52,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10094 to 9142. [2022-03-03 19:18:52,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9142 states, 9141 states have (on average 2.571819275790395) internal successors, (23509), 9141 states have internal predecessors, (23509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9142 states to 9142 states and 23509 transitions. [2022-03-03 19:18:52,040 INFO L78 Accepts]: Start accepts. Automaton has 9142 states and 23509 transitions. Word has length 32 [2022-03-03 19:18:52,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:18:52,041 INFO L470 AbstractCegarLoop]: Abstraction has 9142 states and 23509 transitions. [2022-03-03 19:18:52,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:18:52,041 INFO L276 IsEmpty]: Start isEmpty. Operand 9142 states and 23509 transitions. [2022-03-03 19:18:52,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:18:52,051 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:18:52,051 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:18:52,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-03-03 19:18:52,267 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,SelfDestructingSolverStorable42 [2022-03-03 19:18:52,267 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:18:52,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:18:52,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1875853684, now seen corresponding path program 37 times [2022-03-03 19:18:52,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:18:52,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753068802] [2022-03-03 19:18:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:18:52,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:18:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:52,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:18:52,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753068802] [2022-03-03 19:18:52,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753068802] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:18:52,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155913370] [2022-03-03 19:18:52,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:18:52,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:18:52,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:18:52,426 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) [2022-03-03 19:18:52,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-03 19:18:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:18:52,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:18:52,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:18:52,993 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:52,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:18:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:18:55,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155913370] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:18:55,620 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:18:55,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:18:55,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081091519] [2022-03-03 19:18:55,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:18:55,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:18:55,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:18:55,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:18:55,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=806, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:18:55,621 INFO L87 Difference]: Start difference. First operand 9142 states and 23509 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:00,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:00,677 INFO L93 Difference]: Finished difference Result 10814 states and 27530 transitions. [2022-03-03 19:19:00,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 19:19:00,677 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:19:00,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:00,692 INFO L225 Difference]: With dead ends: 10814 [2022-03-03 19:19:00,692 INFO L226 Difference]: Without dead ends: 10698 [2022-03-03 19:19:00,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2341 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1500, Invalid=5306, Unknown=0, NotChecked=0, Total=6806 [2022-03-03 19:19:00,693 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 490 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:00,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 544 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:19:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10698 states. [2022-03-03 19:19:00,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10698 to 9510. [2022-03-03 19:19:00,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9510 states, 9509 states have (on average 2.573246398149122) internal successors, (24469), 9509 states have internal predecessors, (24469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9510 states to 9510 states and 24469 transitions. [2022-03-03 19:19:00,856 INFO L78 Accepts]: Start accepts. Automaton has 9510 states and 24469 transitions. Word has length 32 [2022-03-03 19:19:00,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:00,857 INFO L470 AbstractCegarLoop]: Abstraction has 9510 states and 24469 transitions. [2022-03-03 19:19:00,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand 9510 states and 24469 transitions. [2022-03-03 19:19:00,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:19:00,867 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:00,868 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:00,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:01,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:01,071 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:01,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:01,072 INFO L85 PathProgramCache]: Analyzing trace with hash -545279040, now seen corresponding path program 38 times [2022-03-03 19:19:01,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:01,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508654683] [2022-03-03 19:19:01,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:01,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:01,212 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:01,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508654683] [2022-03-03 19:19:01,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508654683] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:01,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636466147] [2022-03-03 19:19:01,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:19:01,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:01,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:01,213 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) [2022-03-03 19:19:01,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-03 19:19:01,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:19:01,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:01,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:19:01,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:01,753 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:01,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:03,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636466147] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:03,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:03,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:19:03,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125682796] [2022-03-03 19:19:03,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:03,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:19:03,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:03,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:19:03,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=791, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:19:03,414 INFO L87 Difference]: Start difference. First operand 9510 states and 24469 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:06,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:06,132 INFO L93 Difference]: Finished difference Result 10292 states and 26240 transitions. [2022-03-03 19:19:06,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 19:19:06,132 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:19:06,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:06,147 INFO L225 Difference]: With dead ends: 10292 [2022-03-03 19:19:06,147 INFO L226 Difference]: Without dead ends: 10170 [2022-03-03 19:19:06,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2174 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1508, Invalid=4972, Unknown=0, NotChecked=0, Total=6480 [2022-03-03 19:19:06,149 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 404 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:06,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 505 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:19:06,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10170 states. [2022-03-03 19:19:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10170 to 9590. [2022-03-03 19:19:06,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9590 states, 9589 states have (on average 2.572218166649286) internal successors, (24665), 9589 states have internal predecessors, (24665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:06,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9590 states to 9590 states and 24665 transitions. [2022-03-03 19:19:06,282 INFO L78 Accepts]: Start accepts. Automaton has 9590 states and 24665 transitions. Word has length 32 [2022-03-03 19:19:06,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:06,282 INFO L470 AbstractCegarLoop]: Abstraction has 9590 states and 24665 transitions. [2022-03-03 19:19:06,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 9590 states and 24665 transitions. [2022-03-03 19:19:06,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:19:06,292 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:06,292 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:06,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:06,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:06,493 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:06,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:06,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2008108464, now seen corresponding path program 39 times [2022-03-03 19:19:06,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:06,493 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636978645] [2022-03-03 19:19:06,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:06,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:06,915 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:06,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636978645] [2022-03-03 19:19:06,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636978645] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:06,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915681633] [2022-03-03 19:19:06,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:19:06,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:06,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:06,916 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) [2022-03-03 19:19:06,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-03 19:19:06,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 19:19:06,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:06,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:19:06,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:07,653 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:07,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:10,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915681633] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:10,433 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:10,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:19:10,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413725920] [2022-03-03 19:19:10,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:10,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:19:10,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:10,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:19:10,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:19:10,434 INFO L87 Difference]: Start difference. First operand 9590 states and 24665 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:19,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:19,083 INFO L93 Difference]: Finished difference Result 11812 states and 30011 transitions. [2022-03-03 19:19:19,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-03 19:19:19,084 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:19:19,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:19,099 INFO L225 Difference]: With dead ends: 11812 [2022-03-03 19:19:19,099 INFO L226 Difference]: Without dead ends: 11690 [2022-03-03 19:19:19,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4039 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=2453, Invalid=8259, Unknown=0, NotChecked=0, Total=10712 [2022-03-03 19:19:19,100 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 650 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:19,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 619 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:19:19,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11690 states. [2022-03-03 19:19:19,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11690 to 10214. [2022-03-03 19:19:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10214 states, 10213 states have (on average 2.571330657005777) internal successors, (26261), 10213 states have internal predecessors, (26261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:19,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10214 states to 10214 states and 26261 transitions. [2022-03-03 19:19:19,273 INFO L78 Accepts]: Start accepts. Automaton has 10214 states and 26261 transitions. Word has length 32 [2022-03-03 19:19:19,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:19,273 INFO L470 AbstractCegarLoop]: Abstraction has 10214 states and 26261 transitions. [2022-03-03 19:19:19,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:19,273 INFO L276 IsEmpty]: Start isEmpty. Operand 10214 states and 26261 transitions. [2022-03-03 19:19:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:19:19,284 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:19,284 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:19,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:19,484 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,SelfDestructingSolverStorable45 [2022-03-03 19:19:19,484 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:19,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:19,485 INFO L85 PathProgramCache]: Analyzing trace with hash -993468300, now seen corresponding path program 40 times [2022-03-03 19:19:19,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:19,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215840461] [2022-03-03 19:19:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:19,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:19,722 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:19,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215840461] [2022-03-03 19:19:19,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215840461] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:19,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567129176] [2022-03-03 19:19:19,722 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:19:19,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:19,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:19,723 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) [2022-03-03 19:19:19,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-03 19:19:19,746 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:19:19,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:19,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:19:19,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:20,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:23,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567129176] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:23,317 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:23,317 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:19:23,317 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294385964] [2022-03-03 19:19:23,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:23,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:19:23,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:23,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:19:23,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=796, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:19:23,317 INFO L87 Difference]: Start difference. First operand 10214 states and 26261 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:33,546 INFO L93 Difference]: Finished difference Result 13028 states and 32895 transitions. [2022-03-03 19:19:33,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-03 19:19:33,546 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:19:33,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:33,564 INFO L225 Difference]: With dead ends: 13028 [2022-03-03 19:19:33,564 INFO L226 Difference]: Without dead ends: 12858 [2022-03-03 19:19:33,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4509 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=2667, Invalid=8889, Unknown=0, NotChecked=0, Total=11556 [2022-03-03 19:19:33,566 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 690 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:33,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 631 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 19:19:33,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12858 states. [2022-03-03 19:19:33,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12858 to 10878. [2022-03-03 19:19:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10878 states, 10877 states have (on average 2.572860163648065) internal successors, (27985), 10877 states have internal predecessors, (27985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10878 states to 10878 states and 27985 transitions. [2022-03-03 19:19:33,754 INFO L78 Accepts]: Start accepts. Automaton has 10878 states and 27985 transitions. Word has length 32 [2022-03-03 19:19:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:33,754 INFO L470 AbstractCegarLoop]: Abstraction has 10878 states and 27985 transitions. [2022-03-03 19:19:33,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:33,754 INFO L276 IsEmpty]: Start isEmpty. Operand 10878 states and 27985 transitions. [2022-03-03 19:19:33,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:19:33,766 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:33,766 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:33,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:33,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-03-03 19:19:33,967 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:33,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:33,968 INFO L85 PathProgramCache]: Analyzing trace with hash 719053300, now seen corresponding path program 41 times [2022-03-03 19:19:33,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:33,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094889658] [2022-03-03 19:19:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:33,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:34,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:34,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094889658] [2022-03-03 19:19:34,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094889658] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:34,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053849927] [2022-03-03 19:19:34,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:19:34,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:34,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:34,313 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) [2022-03-03 19:19:34,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-03 19:19:34,338 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 19:19:34,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:34,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:19:34,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:35,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:37,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053849927] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:37,767 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:37,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:19:37,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369744631] [2022-03-03 19:19:37,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:37,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:19:37,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:37,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:19:37,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=798, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:19:37,768 INFO L87 Difference]: Start difference. First operand 10878 states and 27985 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:45,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:19:45,010 INFO L93 Difference]: Finished difference Result 12778 states and 32667 transitions. [2022-03-03 19:19:45,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-03 19:19:45,015 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:19:45,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:19:45,033 INFO L225 Difference]: With dead ends: 12778 [2022-03-03 19:19:45,033 INFO L226 Difference]: Without dead ends: 12678 [2022-03-03 19:19:45,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2434 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1725, Invalid=5415, Unknown=0, NotChecked=0, Total=7140 [2022-03-03 19:19:45,035 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 679 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:19:45,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [679 Valid, 453 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:19:45,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12678 states. [2022-03-03 19:19:45,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12678 to 11694. [2022-03-03 19:19:45,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11694 states, 11693 states have (on average 2.5725647823484135) internal successors, (30081), 11693 states have internal predecessors, (30081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:45,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11694 states to 11694 states and 30081 transitions. [2022-03-03 19:19:45,228 INFO L78 Accepts]: Start accepts. Automaton has 11694 states and 30081 transitions. Word has length 32 [2022-03-03 19:19:45,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:19:45,228 INFO L470 AbstractCegarLoop]: Abstraction has 11694 states and 30081 transitions. [2022-03-03 19:19:45,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:19:45,228 INFO L276 IsEmpty]: Start isEmpty. Operand 11694 states and 30081 transitions. [2022-03-03 19:19:45,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:19:45,242 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:19:45,242 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:19:45,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-03 19:19:45,442 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,SelfDestructingSolverStorable47 [2022-03-03 19:19:45,442 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:19:45,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:19:45,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1317700988, now seen corresponding path program 42 times [2022-03-03 19:19:45,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:19:45,443 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648505645] [2022-03-03 19:19:45,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:19:45,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:19:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:19:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:55,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:19:55,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648505645] [2022-03-03 19:19:55,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648505645] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:19:55,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383433595] [2022-03-03 19:19:55,230 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:19:55,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:19:55,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:19:55,231 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) [2022-03-03 19:19:55,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-03 19:19:55,256 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-03 19:19:55,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:19:55,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:19:55,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:19:55,767 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:55,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:19:57,762 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:19:57,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383433595] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:19:57,762 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:19:57,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:19:57,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866583135] [2022-03-03 19:19:57,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:19:57,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:19:57,763 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:19:57,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:19:57,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:19:57,763 INFO L87 Difference]: Start difference. First operand 11694 states and 30081 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:02,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:02,925 INFO L93 Difference]: Finished difference Result 13014 states and 33269 transitions. [2022-03-03 19:20:02,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-03 19:20:02,925 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:20:02,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:02,944 INFO L225 Difference]: With dead ends: 13014 [2022-03-03 19:20:02,944 INFO L226 Difference]: Without dead ends: 12880 [2022-03-03 19:20:02,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2895 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1917, Invalid=6273, Unknown=0, NotChecked=0, Total=8190 [2022-03-03 19:20:02,945 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 512 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:02,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 556 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:20:02,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12880 states. [2022-03-03 19:20:03,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12880 to 11950. [2022-03-03 19:20:03,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11950 states, 11949 states have (on average 2.5710101263704077) internal successors, (30721), 11949 states have internal predecessors, (30721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11950 states to 11950 states and 30721 transitions. [2022-03-03 19:20:03,118 INFO L78 Accepts]: Start accepts. Automaton has 11950 states and 30721 transitions. Word has length 32 [2022-03-03 19:20:03,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:03,119 INFO L470 AbstractCegarLoop]: Abstraction has 11950 states and 30721 transitions. [2022-03-03 19:20:03,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 11950 states and 30721 transitions. [2022-03-03 19:20:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:20:03,132 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:03,132 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:03,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-03-03 19:20:03,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:03,332 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:03,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:03,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1253007340, now seen corresponding path program 43 times [2022-03-03 19:20:03,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:03,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300954963] [2022-03-03 19:20:03,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:03,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:03,505 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:03,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:03,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300954963] [2022-03-03 19:20:03,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300954963] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:03,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339021204] [2022-03-03 19:20:03,505 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:20:03,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:03,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:03,506 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) [2022-03-03 19:20:03,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-03 19:20:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:03,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:20:03,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:04,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:07,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339021204] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:07,148 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:07,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:20:07,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256165936] [2022-03-03 19:20:07,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:07,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:20:07,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:07,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:20:07,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=800, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:20:07,149 INFO L87 Difference]: Start difference. First operand 11950 states and 30721 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:15,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:15,816 INFO L93 Difference]: Finished difference Result 14408 states and 36684 transitions. [2022-03-03 19:20:15,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-03 19:20:15,816 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:20:15,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:15,835 INFO L225 Difference]: With dead ends: 14408 [2022-03-03 19:20:15,835 INFO L226 Difference]: Without dead ends: 14302 [2022-03-03 19:20:15,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3918 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=2270, Invalid=8032, Unknown=0, NotChecked=0, Total=10302 [2022-03-03 19:20:15,837 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 574 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:15,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 995 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:20:15,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14302 states. [2022-03-03 19:20:16,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14302 to 12766. [2022-03-03 19:20:16,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12766 states, 12765 states have (on average 2.5724245985115552) internal successors, (32837), 12765 states have internal predecessors, (32837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12766 states to 12766 states and 32837 transitions. [2022-03-03 19:20:16,063 INFO L78 Accepts]: Start accepts. Automaton has 12766 states and 32837 transitions. Word has length 32 [2022-03-03 19:20:16,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:16,063 INFO L470 AbstractCegarLoop]: Abstraction has 12766 states and 32837 transitions. [2022-03-03 19:20:16,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:16,064 INFO L276 IsEmpty]: Start isEmpty. Operand 12766 states and 32837 transitions. [2022-03-03 19:20:16,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:20:16,079 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:16,079 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:16,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-03 19:20:16,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-03 19:20:16,279 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1624683704, now seen corresponding path program 44 times [2022-03-03 19:20:16,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:16,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288242397] [2022-03-03 19:20:16,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:16,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:20,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:20,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288242397] [2022-03-03 19:20:20,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288242397] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:20,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649685953] [2022-03-03 19:20:20,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:20:20,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:20,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:20,822 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) [2022-03-03 19:20:20,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-03 19:20:20,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:20:20,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:20,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:20:20,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:21,611 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:21,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:24,424 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:24,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649685953] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:24,424 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:24,424 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:20:24,425 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942354876] [2022-03-03 19:20:24,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:24,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:20:24,425 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:24,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:20:24,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=791, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:20:24,425 INFO L87 Difference]: Start difference. First operand 12766 states and 32837 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:32,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:32,134 INFO L93 Difference]: Finished difference Result 15500 states and 39432 transitions. [2022-03-03 19:20:32,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 19:20:32,135 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:20:32,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:32,160 INFO L225 Difference]: With dead ends: 15500 [2022-03-03 19:20:32,160 INFO L226 Difference]: Without dead ends: 15366 [2022-03-03 19:20:32,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2606 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1840, Invalid=5642, Unknown=0, NotChecked=0, Total=7482 [2022-03-03 19:20:32,161 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 693 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:32,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 780 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 19:20:32,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15366 states. [2022-03-03 19:20:32,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15366 to 13358. [2022-03-03 19:20:32,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13358 states, 13357 states have (on average 2.5698135808939133) internal successors, (34325), 13357 states have internal predecessors, (34325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:32,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13358 states to 13358 states and 34325 transitions. [2022-03-03 19:20:32,433 INFO L78 Accepts]: Start accepts. Automaton has 13358 states and 34325 transitions. Word has length 32 [2022-03-03 19:20:32,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:32,433 INFO L470 AbstractCegarLoop]: Abstraction has 13358 states and 34325 transitions. [2022-03-03 19:20:32,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:32,433 INFO L276 IsEmpty]: Start isEmpty. Operand 13358 states and 34325 transitions. [2022-03-03 19:20:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:20:32,450 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:32,450 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:32,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-03 19:20:32,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:32,650 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:32,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:32,651 INFO L85 PathProgramCache]: Analyzing trace with hash -480919828, now seen corresponding path program 45 times [2022-03-03 19:20:32,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:32,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533829003] [2022-03-03 19:20:32,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:32,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:32,834 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:32,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533829003] [2022-03-03 19:20:32,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533829003] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:32,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174027974] [2022-03-03 19:20:32,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:20:32,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:32,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:32,836 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) [2022-03-03 19:20:32,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-03 19:20:32,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 19:20:32,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:32,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:20:32,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:33,518 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:33,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:36,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174027974] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:36,470 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:36,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:20:36,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525024963] [2022-03-03 19:20:36,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:36,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:20:36,470 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:36,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:20:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:20:36,471 INFO L87 Difference]: Start difference. First operand 13358 states and 34325 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:42,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:42,725 INFO L93 Difference]: Finished difference Result 15248 states and 38925 transitions. [2022-03-03 19:20:42,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 19:20:42,725 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:20:42,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:42,748 INFO L225 Difference]: With dead ends: 15248 [2022-03-03 19:20:42,749 INFO L226 Difference]: Without dead ends: 15146 [2022-03-03 19:20:42,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1590, Invalid=5052, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 19:20:42,749 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 467 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:42,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 780 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 19:20:42,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15146 states. [2022-03-03 19:20:42,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15146 to 13950. [2022-03-03 19:20:42,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13950 states, 13949 states have (on average 2.570291777188329) internal successors, (35853), 13949 states have internal predecessors, (35853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:42,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13950 states to 13950 states and 35853 transitions. [2022-03-03 19:20:42,992 INFO L78 Accepts]: Start accepts. Automaton has 13950 states and 35853 transitions. Word has length 32 [2022-03-03 19:20:42,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:42,992 INFO L470 AbstractCegarLoop]: Abstraction has 13950 states and 35853 transitions. [2022-03-03 19:20:42,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:42,992 INFO L276 IsEmpty]: Start isEmpty. Operand 13950 states and 35853 transitions. [2022-03-03 19:20:43,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:20:43,010 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:43,010 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:43,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-03 19:20:43,210 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,SelfDestructingSolverStorable51 [2022-03-03 19:20:43,211 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:43,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:43,211 INFO L85 PathProgramCache]: Analyzing trace with hash -531892552, now seen corresponding path program 46 times [2022-03-03 19:20:43,211 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:43,211 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819192943] [2022-03-03 19:20:43,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:43,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:43,985 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:43,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:43,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819192943] [2022-03-03 19:20:43,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819192943] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:43,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652983815] [2022-03-03 19:20:43,985 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:20:43,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:43,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:43,987 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) [2022-03-03 19:20:43,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-03 19:20:44,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:20:44,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:44,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:20:44,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:44,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:47,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652983815] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:47,240 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:47,240 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:20:47,240 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183791304] [2022-03-03 19:20:47,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:47,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:20:47,241 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:47,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:20:47,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:20:47,241 INFO L87 Difference]: Start difference. First operand 13950 states and 35853 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:55,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:20:55,014 INFO L93 Difference]: Finished difference Result 16534 states and 42304 transitions. [2022-03-03 19:20:55,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-03 19:20:55,015 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:20:55,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:20:55,041 INFO L225 Difference]: With dead ends: 16534 [2022-03-03 19:20:55,041 INFO L226 Difference]: Without dead ends: 16414 [2022-03-03 19:20:55,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2948 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=2050, Invalid=6140, Unknown=0, NotChecked=0, Total=8190 [2022-03-03 19:20:55,043 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 592 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:20:55,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 778 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:20:55,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16414 states. [2022-03-03 19:20:55,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16414 to 14774. [2022-03-03 19:20:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14774 states, 14773 states have (on average 2.568807960468422) internal successors, (37949), 14773 states have internal predecessors, (37949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:55,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14774 states to 14774 states and 37949 transitions. [2022-03-03 19:20:55,327 INFO L78 Accepts]: Start accepts. Automaton has 14774 states and 37949 transitions. Word has length 32 [2022-03-03 19:20:55,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:20:55,327 INFO L470 AbstractCegarLoop]: Abstraction has 14774 states and 37949 transitions. [2022-03-03 19:20:55,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:20:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 14774 states and 37949 transitions. [2022-03-03 19:20:55,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:20:55,348 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:20:55,348 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:20:55,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-03 19:20:55,555 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,SelfDestructingSolverStorable52 [2022-03-03 19:20:55,555 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:20:55,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:20:55,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1774426168, now seen corresponding path program 47 times [2022-03-03 19:20:55,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:20:55,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951797816] [2022-03-03 19:20:55,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:20:55,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:20:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:20:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:55,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:20:55,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951797816] [2022-03-03 19:20:55,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951797816] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:20:55,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067882144] [2022-03-03 19:20:55,810 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:20:55,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:20:55,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:20:55,811 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) [2022-03-03 19:20:55,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-03 19:20:55,836 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 19:20:55,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:20:55,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:20:55,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:20:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:56,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:20:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:20:58,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067882144] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:20:58,547 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:20:58,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:20:58,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817324291] [2022-03-03 19:20:58,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:20:58,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:20:58,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:20:58,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:20:58,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=777, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:20:58,548 INFO L87 Difference]: Start difference. First operand 14774 states and 37949 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:02,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:02,624 INFO L93 Difference]: Finished difference Result 16280 states and 41521 transitions. [2022-03-03 19:21:02,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 19:21:02,624 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:21:02,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:02,650 INFO L225 Difference]: With dead ends: 16280 [2022-03-03 19:21:02,651 INFO L226 Difference]: Without dead ends: 16156 [2022-03-03 19:21:02,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2225 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1555, Invalid=5087, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 19:21:02,652 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 445 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:02,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 556 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 19:21:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16156 states. [2022-03-03 19:21:02,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16156 to 15126. [2022-03-03 19:21:02,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15126 states, 15125 states have (on average 2.5690578512396693) internal successors, (38857), 15125 states have internal predecessors, (38857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:02,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15126 states to 15126 states and 38857 transitions. [2022-03-03 19:21:02,916 INFO L78 Accepts]: Start accepts. Automaton has 15126 states and 38857 transitions. Word has length 32 [2022-03-03 19:21:02,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:02,916 INFO L470 AbstractCegarLoop]: Abstraction has 15126 states and 38857 transitions. [2022-03-03 19:21:02,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:02,917 INFO L276 IsEmpty]: Start isEmpty. Operand 15126 states and 38857 transitions. [2022-03-03 19:21:02,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:21:02,934 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:02,934 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:02,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-03-03 19:21:03,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:03,134 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:03,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:03,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1218344624, now seen corresponding path program 48 times [2022-03-03 19:21:03,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:03,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819715252] [2022-03-03 19:21:03,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:03,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:04,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:04,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819715252] [2022-03-03 19:21:04,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819715252] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:04,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537748114] [2022-03-03 19:21:04,935 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:21:04,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:04,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:04,936 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) [2022-03-03 19:21:04,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-03 19:21:04,962 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 19:21:04,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:04,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:21:04,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:05,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:08,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537748114] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:08,181 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:08,181 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:21:08,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171190244] [2022-03-03 19:21:08,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:08,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:21:08,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:08,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:21:08,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:21:08,182 INFO L87 Difference]: Start difference. First operand 15126 states and 38857 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:16,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:16,064 INFO L93 Difference]: Finished difference Result 17780 states and 45246 transitions. [2022-03-03 19:21:16,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-03 19:21:16,064 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:21:16,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:16,091 INFO L225 Difference]: With dead ends: 17780 [2022-03-03 19:21:16,091 INFO L226 Difference]: Without dead ends: 17588 [2022-03-03 19:21:16,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4189 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=2553, Invalid=8159, Unknown=0, NotChecked=0, Total=10712 [2022-03-03 19:21:16,092 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 599 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:16,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 903 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:21:16,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17588 states. [2022-03-03 19:21:16,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17588 to 15910. [2022-03-03 19:21:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15910 states, 15909 states have (on average 2.570683261047206) internal successors, (40897), 15909 states have internal predecessors, (40897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15910 states to 15910 states and 40897 transitions. [2022-03-03 19:21:16,372 INFO L78 Accepts]: Start accepts. Automaton has 15910 states and 40897 transitions. Word has length 32 [2022-03-03 19:21:16,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:16,372 INFO L470 AbstractCegarLoop]: Abstraction has 15910 states and 40897 transitions. [2022-03-03 19:21:16,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:16,373 INFO L276 IsEmpty]: Start isEmpty. Operand 15910 states and 40897 transitions. [2022-03-03 19:21:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:21:16,391 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:16,391 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:16,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:16,591 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,SelfDestructingSolverStorable54 [2022-03-03 19:21:16,592 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:16,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:16,592 INFO L85 PathProgramCache]: Analyzing trace with hash -265378836, now seen corresponding path program 49 times [2022-03-03 19:21:16,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:16,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511589870] [2022-03-03 19:21:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:16,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:18,253 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:18,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511589870] [2022-03-03 19:21:18,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511589870] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:18,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080088431] [2022-03-03 19:21:18,254 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:21:18,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:18,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:18,255 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) [2022-03-03 19:21:18,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-03 19:21:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:18,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:21:18,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:19,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:21,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080088431] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:21,739 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:21,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:21:21,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423914570] [2022-03-03 19:21:21,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:21,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:21:21,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:21,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:21:21,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=796, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:21:21,740 INFO L87 Difference]: Start difference. First operand 15910 states and 40897 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:29,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:29,900 INFO L93 Difference]: Finished difference Result 17916 states and 45675 transitions. [2022-03-03 19:21:29,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-03 19:21:29,902 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:21:29,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:29,929 INFO L225 Difference]: With dead ends: 17916 [2022-03-03 19:21:29,929 INFO L226 Difference]: Without dead ends: 17762 [2022-03-03 19:21:29,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3268 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=2087, Invalid=7033, Unknown=0, NotChecked=0, Total=9120 [2022-03-03 19:21:29,931 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 636 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:29,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 799 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:21:29,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17762 states. [2022-03-03 19:21:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17762 to 16462. [2022-03-03 19:21:30,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16462 states, 16461 states have (on average 2.5700139724196585) internal successors, (42305), 16461 states have internal predecessors, (42305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16462 states to 16462 states and 42305 transitions. [2022-03-03 19:21:30,267 INFO L78 Accepts]: Start accepts. Automaton has 16462 states and 42305 transitions. Word has length 32 [2022-03-03 19:21:30,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:30,267 INFO L470 AbstractCegarLoop]: Abstraction has 16462 states and 42305 transitions. [2022-03-03 19:21:30,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 16462 states and 42305 transitions. [2022-03-03 19:21:30,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:21:30,286 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:30,286 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:30,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-03-03 19:21:30,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-03-03 19:21:30,486 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:30,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:30,487 INFO L85 PathProgramCache]: Analyzing trace with hash 447239464, now seen corresponding path program 50 times [2022-03-03 19:21:30,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:30,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078190344] [2022-03-03 19:21:30,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:30,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:30,946 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:30,946 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:30,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078190344] [2022-03-03 19:21:30,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078190344] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:30,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018400645] [2022-03-03 19:21:30,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:21:30,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:30,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:30,948 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) [2022-03-03 19:21:30,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-03 19:21:30,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:21:30,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:30,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:21:30,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:31,452 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:31,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:33,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018400645] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:33,616 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:33,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:21:33,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052937419] [2022-03-03 19:21:33,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:33,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:21:33,617 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:33,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:21:33,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:21:33,617 INFO L87 Difference]: Start difference. First operand 16462 states and 42305 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:39,900 INFO L93 Difference]: Finished difference Result 17562 states and 44936 transitions. [2022-03-03 19:21:39,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-03 19:21:39,900 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:21:39,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:39,926 INFO L225 Difference]: With dead ends: 17562 [2022-03-03 19:21:39,926 INFO L226 Difference]: Without dead ends: 17520 [2022-03-03 19:21:39,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2128 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1582, Invalid=5060, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 19:21:39,927 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 638 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:39,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 655 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 19:21:39,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17520 states. [2022-03-03 19:21:40,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17520 to 16750. [2022-03-03 19:21:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16750 states, 16749 states have (on average 2.5702429995820646) internal successors, (43049), 16749 states have internal predecessors, (43049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16750 states to 16750 states and 43049 transitions. [2022-03-03 19:21:40,182 INFO L78 Accepts]: Start accepts. Automaton has 16750 states and 43049 transitions. Word has length 32 [2022-03-03 19:21:40,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:40,182 INFO L470 AbstractCegarLoop]: Abstraction has 16750 states and 43049 transitions. [2022-03-03 19:21:40,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 16750 states and 43049 transitions. [2022-03-03 19:21:40,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:21:40,203 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:40,203 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:40,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:40,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:40,404 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:40,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:40,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1236249672, now seen corresponding path program 51 times [2022-03-03 19:21:40,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:40,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264516191] [2022-03-03 19:21:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:40,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:40,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:40,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264516191] [2022-03-03 19:21:40,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264516191] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:40,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438570125] [2022-03-03 19:21:40,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:21:40,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:40,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:40,716 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) [2022-03-03 19:21:40,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-03 19:21:40,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-03-03 19:21:40,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:40,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:21:40,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:41,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:43,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438570125] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:43,974 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:43,974 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:21:43,974 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745907131] [2022-03-03 19:21:43,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:43,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:21:43,974 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:43,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:21:43,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=796, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:21:43,975 INFO L87 Difference]: Start difference. First operand 16750 states and 43049 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:50,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:21:50,065 INFO L93 Difference]: Finished difference Result 18228 states and 46558 transitions. [2022-03-03 19:21:50,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 19:21:50,065 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:21:50,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:21:50,089 INFO L225 Difference]: With dead ends: 18228 [2022-03-03 19:21:50,089 INFO L226 Difference]: Without dead ends: 18154 [2022-03-03 19:21:50,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2262 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1593, Invalid=5213, Unknown=0, NotChecked=0, Total=6806 [2022-03-03 19:21:50,089 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 468 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:21:50,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 919 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 19:21:50,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18154 states. [2022-03-03 19:21:50,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18154 to 17206. [2022-03-03 19:21:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17206 states, 17205 states have (on average 2.5725661145015986) internal successors, (44261), 17205 states have internal predecessors, (44261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:50,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17206 states to 17206 states and 44261 transitions. [2022-03-03 19:21:50,386 INFO L78 Accepts]: Start accepts. Automaton has 17206 states and 44261 transitions. Word has length 32 [2022-03-03 19:21:50,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:21:50,386 INFO L470 AbstractCegarLoop]: Abstraction has 17206 states and 44261 transitions. [2022-03-03 19:21:50,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:21:50,386 INFO L276 IsEmpty]: Start isEmpty. Operand 17206 states and 44261 transitions. [2022-03-03 19:21:50,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:21:50,408 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:21:50,408 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:21:50,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-03 19:21:50,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:50,609 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:21:50,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:21:50,609 INFO L85 PathProgramCache]: Analyzing trace with hash -475466440, now seen corresponding path program 52 times [2022-03-03 19:21:50,609 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:21:50,609 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708019969] [2022-03-03 19:21:50,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:21:50,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:21:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:21:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:50,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:21:50,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708019969] [2022-03-03 19:21:50,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708019969] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:21:50,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398579431] [2022-03-03 19:21:50,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:21:50,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:21:50,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:21:50,820 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) [2022-03-03 19:21:50,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-03 19:21:50,840 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:21:50,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:21:50,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:21:50,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:21:51,416 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:51,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:21:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:21:54,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398579431] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:21:54,127 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:21:54,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:21:54,128 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074958230] [2022-03-03 19:21:54,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:21:54,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:21:54,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:21:54,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:21:54,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=800, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:21:54,128 INFO L87 Difference]: Start difference. First operand 17206 states and 44261 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:01,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:01,640 INFO L93 Difference]: Finished difference Result 18966 states and 48464 transitions. [2022-03-03 19:22:01,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-03 19:22:01,641 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:22:01,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:01,670 INFO L225 Difference]: With dead ends: 18966 [2022-03-03 19:22:01,670 INFO L226 Difference]: Without dead ends: 18862 [2022-03-03 19:22:01,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2859 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1797, Invalid=6575, Unknown=0, NotChecked=0, Total=8372 [2022-03-03 19:22:01,672 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 459 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:01,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 579 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 19:22:01,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18862 states. [2022-03-03 19:22:01,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18862 to 17734. [2022-03-03 19:22:01,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17734 states, 17733 states have (on average 2.5749168217447695) internal successors, (45661), 17733 states have internal predecessors, (45661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:02,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17734 states to 17734 states and 45661 transitions. [2022-03-03 19:22:02,061 INFO L78 Accepts]: Start accepts. Automaton has 17734 states and 45661 transitions. Word has length 32 [2022-03-03 19:22:02,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:02,061 INFO L470 AbstractCegarLoop]: Abstraction has 17734 states and 45661 transitions. [2022-03-03 19:22:02,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:02,061 INFO L276 IsEmpty]: Start isEmpty. Operand 17734 states and 45661 transitions. [2022-03-03 19:22:02,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:22:02,081 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:02,081 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:02,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-03 19:22:02,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:02,282 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:02,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:02,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1046722232, now seen corresponding path program 53 times [2022-03-03 19:22:02,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:02,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125382203] [2022-03-03 19:22:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:02,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:02,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:02,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125382203] [2022-03-03 19:22:02,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125382203] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:02,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979428549] [2022-03-03 19:22:02,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:22:02,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:02,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:02,513 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) [2022-03-03 19:22:02,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-03 19:22:02,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 19:22:02,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:02,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-03 19:22:02,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:03,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:05,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979428549] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:05,729 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:05,729 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:22:05,729 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287409482] [2022-03-03 19:22:05,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:05,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:22:05,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:05,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:22:05,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:22:05,730 INFO L87 Difference]: Start difference. First operand 17734 states and 45661 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:12,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:12,900 INFO L93 Difference]: Finished difference Result 20014 states and 51157 transitions. [2022-03-03 19:22:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-03 19:22:12,900 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:22:12,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:12,929 INFO L225 Difference]: With dead ends: 20014 [2022-03-03 19:22:12,929 INFO L226 Difference]: Without dead ends: 19886 [2022-03-03 19:22:12,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2698 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1826, Invalid=5484, Unknown=0, NotChecked=0, Total=7310 [2022-03-03 19:22:12,930 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 662 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:12,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [662 Valid, 484 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:22:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19886 states. [2022-03-03 19:22:13,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19886 to 18350. [2022-03-03 19:22:13,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18350 states, 18349 states have (on average 2.5754537031990843) internal successors, (47257), 18349 states have internal predecessors, (47257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18350 states to 18350 states and 47257 transitions. [2022-03-03 19:22:13,233 INFO L78 Accepts]: Start accepts. Automaton has 18350 states and 47257 transitions. Word has length 32 [2022-03-03 19:22:13,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:13,233 INFO L470 AbstractCegarLoop]: Abstraction has 18350 states and 47257 transitions. [2022-03-03 19:22:13,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:13,233 INFO L276 IsEmpty]: Start isEmpty. Operand 18350 states and 47257 transitions. [2022-03-03 19:22:13,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:22:13,255 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:13,255 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:13,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-03-03 19:22:13,456 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,SelfDestructingSolverStorable59 [2022-03-03 19:22:13,456 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:13,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:13,456 INFO L85 PathProgramCache]: Analyzing trace with hash -889985932, now seen corresponding path program 54 times [2022-03-03 19:22:13,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:13,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392304330] [2022-03-03 19:22:13,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:13,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:13,662 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:13,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392304330] [2022-03-03 19:22:13,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392304330] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:13,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228681774] [2022-03-03 19:22:13,662 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:22:13,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:13,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:13,664 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) [2022-03-03 19:22:13,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-03 19:22:13,685 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 19:22:13,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:13,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:22:13,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:14,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:16,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228681774] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:16,866 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:16,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:22:16,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207737003] [2022-03-03 19:22:16,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:16,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:22:16,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:16,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:22:16,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:22:16,867 INFO L87 Difference]: Start difference. First operand 18350 states and 47257 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:23,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:23,842 INFO L93 Difference]: Finished difference Result 20758 states and 53098 transitions. [2022-03-03 19:22:23,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-03 19:22:23,843 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:22:23,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:23,877 INFO L225 Difference]: With dead ends: 20758 [2022-03-03 19:22:23,877 INFO L226 Difference]: Without dead ends: 20602 [2022-03-03 19:22:23,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3877 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=2391, Invalid=7709, Unknown=0, NotChecked=0, Total=10100 [2022-03-03 19:22:23,879 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 633 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:23,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 695 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:22:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20602 states. [2022-03-03 19:22:24,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20602 to 19054. [2022-03-03 19:22:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19054 states, 19053 states have (on average 2.571616018474781) internal successors, (48997), 19053 states have internal predecessors, (48997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:24,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19054 states to 19054 states and 48997 transitions. [2022-03-03 19:22:24,241 INFO L78 Accepts]: Start accepts. Automaton has 19054 states and 48997 transitions. Word has length 32 [2022-03-03 19:22:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:24,241 INFO L470 AbstractCegarLoop]: Abstraction has 19054 states and 48997 transitions. [2022-03-03 19:22:24,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:24,242 INFO L276 IsEmpty]: Start isEmpty. Operand 19054 states and 48997 transitions. [2022-03-03 19:22:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:22:24,265 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:24,265 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:24,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-03 19:22:24,466 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,SelfDestructingSolverStorable60 [2022-03-03 19:22:24,466 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:24,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:24,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1228323468, now seen corresponding path program 55 times [2022-03-03 19:22:24,467 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:24,467 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412318284] [2022-03-03 19:22:24,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:24,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:24,725 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:24,725 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:24,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412318284] [2022-03-03 19:22:24,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412318284] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:24,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416378390] [2022-03-03 19:22:24,726 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:22:24,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:24,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:24,727 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) [2022-03-03 19:22:24,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-03 19:22:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:24,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:22:24,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:25,296 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:25,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:27,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416378390] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:27,720 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:27,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:22:27,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485621685] [2022-03-03 19:22:27,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:27,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:22:27,720 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:27,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:22:27,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:22:27,720 INFO L87 Difference]: Start difference. First operand 19054 states and 48997 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:33,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:33,561 INFO L93 Difference]: Finished difference Result 21288 states and 54398 transitions. [2022-03-03 19:22:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-03 19:22:33,562 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:22:33,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:33,589 INFO L225 Difference]: With dead ends: 21288 [2022-03-03 19:22:33,589 INFO L226 Difference]: Without dead ends: 21150 [2022-03-03 19:22:33,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3071 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1854, Invalid=6336, Unknown=0, NotChecked=0, Total=8190 [2022-03-03 19:22:33,590 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 407 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:33,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 992 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:22:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21150 states. [2022-03-03 19:22:33,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21150 to 19574. [2022-03-03 19:22:33,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19574 states, 19573 states have (on average 2.5699177438307874) internal successors, (50301), 19573 states have internal predecessors, (50301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:33,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19574 states to 19574 states and 50301 transitions. [2022-03-03 19:22:33,920 INFO L78 Accepts]: Start accepts. Automaton has 19574 states and 50301 transitions. Word has length 32 [2022-03-03 19:22:33,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:33,920 INFO L470 AbstractCegarLoop]: Abstraction has 19574 states and 50301 transitions. [2022-03-03 19:22:33,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:33,920 INFO L276 IsEmpty]: Start isEmpty. Operand 19574 states and 50301 transitions. [2022-03-03 19:22:33,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:22:33,944 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:33,944 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:33,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-03 19:22:34,144 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,SelfDestructingSolverStorable61 [2022-03-03 19:22:34,144 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:34,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:34,144 INFO L85 PathProgramCache]: Analyzing trace with hash -149702344, now seen corresponding path program 56 times [2022-03-03 19:22:34,145 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:34,145 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196196430] [2022-03-03 19:22:34,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:34,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:34,329 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:34,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:34,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196196430] [2022-03-03 19:22:34,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196196430] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:34,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710267496] [2022-03-03 19:22:34,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:22:34,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:34,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:34,340 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) [2022-03-03 19:22:34,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-03 19:22:34,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:22:34,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:34,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:22:34,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:34,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:37,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710267496] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:37,386 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:37,386 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:22:37,386 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677191659] [2022-03-03 19:22:37,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:37,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:22:37,386 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:37,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:22:37,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=805, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:22:37,387 INFO L87 Difference]: Start difference. First operand 19574 states and 50301 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:45,549 INFO L93 Difference]: Finished difference Result 21578 states and 55151 transitions. [2022-03-03 19:22:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-03 19:22:45,550 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:22:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:45,583 INFO L225 Difference]: With dead ends: 21578 [2022-03-03 19:22:45,584 INFO L226 Difference]: Without dead ends: 21448 [2022-03-03 19:22:45,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3328 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=2316, Invalid=7190, Unknown=0, NotChecked=0, Total=9506 [2022-03-03 19:22:45,585 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 743 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:45,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 785 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:22:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21448 states. [2022-03-03 19:22:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21448 to 19942. [2022-03-03 19:22:45,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19942 states, 19941 states have (on average 2.571836918910787) internal successors, (51285), 19941 states have internal predecessors, (51285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19942 states to 19942 states and 51285 transitions. [2022-03-03 19:22:45,976 INFO L78 Accepts]: Start accepts. Automaton has 19942 states and 51285 transitions. Word has length 32 [2022-03-03 19:22:45,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:45,976 INFO L470 AbstractCegarLoop]: Abstraction has 19942 states and 51285 transitions. [2022-03-03 19:22:45,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 19942 states and 51285 transitions. [2022-03-03 19:22:46,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:22:46,000 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:46,000 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:46,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-03 19:22:46,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:46,203 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:46,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:46,204 INFO L85 PathProgramCache]: Analyzing trace with hash 640383152, now seen corresponding path program 57 times [2022-03-03 19:22:46,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:46,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507850326] [2022-03-03 19:22:46,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:46,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:46,594 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:46,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507850326] [2022-03-03 19:22:46,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507850326] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:46,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729145051] [2022-03-03 19:22:46,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:22:46,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:46,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:46,596 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) [2022-03-03 19:22:46,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-03 19:22:46,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-03 19:22:46,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:46,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:22:46,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:47,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:22:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:49,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729145051] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:22:49,935 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:22:49,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:22:49,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614956402] [2022-03-03 19:22:49,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:22:49,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:22:49,936 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:22:49,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:22:49,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:22:49,936 INFO L87 Difference]: Start difference. First operand 19942 states and 51285 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:57,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:22:57,196 INFO L93 Difference]: Finished difference Result 22802 states and 58304 transitions. [2022-03-03 19:22:57,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-03 19:22:57,196 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:22:57,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:22:57,233 INFO L225 Difference]: With dead ends: 22802 [2022-03-03 19:22:57,233 INFO L226 Difference]: Without dead ends: 22650 [2022-03-03 19:22:57,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3175 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2025, Invalid=6531, Unknown=0, NotChecked=0, Total=8556 [2022-03-03 19:22:57,234 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 509 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:22:57,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 688 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:22:57,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22650 states. [2022-03-03 19:22:57,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22650 to 20766. [2022-03-03 19:22:57,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20766 states, 20765 states have (on average 2.5714904888032746) internal successors, (53397), 20765 states have internal predecessors, (53397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20766 states to 20766 states and 53397 transitions. [2022-03-03 19:22:57,684 INFO L78 Accepts]: Start accepts. Automaton has 20766 states and 53397 transitions. Word has length 32 [2022-03-03 19:22:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:22:57,684 INFO L470 AbstractCegarLoop]: Abstraction has 20766 states and 53397 transitions. [2022-03-03 19:22:57,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:22:57,684 INFO L276 IsEmpty]: Start isEmpty. Operand 20766 states and 53397 transitions. [2022-03-03 19:22:57,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:22:57,709 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:22:57,710 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:22:57,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-03 19:22:57,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:57,910 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:22:57,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:22:57,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1102055248, now seen corresponding path program 58 times [2022-03-03 19:22:57,911 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:22:57,911 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110200610] [2022-03-03 19:22:57,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:22:57,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:22:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:22:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:58,048 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:22:58,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110200610] [2022-03-03 19:22:58,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110200610] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:22:58,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559824202] [2022-03-03 19:22:58,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:22:58,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:22:58,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:22:58,049 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) [2022-03-03 19:22:58,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-03 19:22:58,072 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:22:58,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:22:58,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:22:58,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:22:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:22:58,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:00,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559824202] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:00,916 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:00,916 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:23:00,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792834801] [2022-03-03 19:23:00,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:00,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:23:00,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:00,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:23:00,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:23:00,917 INFO L87 Difference]: Start difference. First operand 20766 states and 53397 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:07,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:07,807 INFO L93 Difference]: Finished difference Result 23160 states and 59221 transitions. [2022-03-03 19:23:07,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-03 19:23:07,808 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:23:07,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:07,843 INFO L225 Difference]: With dead ends: 23160 [2022-03-03 19:23:07,844 INFO L226 Difference]: Without dead ends: 23008 [2022-03-03 19:23:07,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3822 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2474, Invalid=7626, Unknown=0, NotChecked=0, Total=10100 [2022-03-03 19:23:07,845 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 717 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:07,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 687 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:23:07,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23008 states. [2022-03-03 19:23:08,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23008 to 21294. [2022-03-03 19:23:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21294 states, 21293 states have (on average 2.570469168271263) internal successors, (54733), 21293 states have internal predecessors, (54733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:08,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21294 states to 21294 states and 54733 transitions. [2022-03-03 19:23:08,198 INFO L78 Accepts]: Start accepts. Automaton has 21294 states and 54733 transitions. Word has length 32 [2022-03-03 19:23:08,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:08,198 INFO L470 AbstractCegarLoop]: Abstraction has 21294 states and 54733 transitions. [2022-03-03 19:23:08,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 21294 states and 54733 transitions. [2022-03-03 19:23:08,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:23:08,224 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:08,224 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:08,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:08,424 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,SelfDestructingSolverStorable64 [2022-03-03 19:23:08,424 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:08,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:08,425 INFO L85 PathProgramCache]: Analyzing trace with hash 410396524, now seen corresponding path program 59 times [2022-03-03 19:23:08,425 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:08,425 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707612029] [2022-03-03 19:23:08,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:08,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:08,844 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:08,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707612029] [2022-03-03 19:23:08,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707612029] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:08,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475755293] [2022-03-03 19:23:08,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:23:08,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:08,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:08,845 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) [2022-03-03 19:23:08,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-03 19:23:08,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-03 19:23:08,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:08,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:23:08,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:09,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:12,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475755293] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:12,262 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:12,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:23:12,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211541583] [2022-03-03 19:23:12,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:12,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:23:12,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:12,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:23:12,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:23:12,263 INFO L87 Difference]: Start difference. First operand 21294 states and 54733 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:21,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:21,813 INFO L93 Difference]: Finished difference Result 23958 states and 61154 transitions. [2022-03-03 19:23:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-03 19:23:21,813 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:23:21,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:21,851 INFO L225 Difference]: With dead ends: 23958 [2022-03-03 19:23:21,852 INFO L226 Difference]: Without dead ends: 23796 [2022-03-03 19:23:21,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4289 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=2482, Invalid=8438, Unknown=0, NotChecked=0, Total=10920 [2022-03-03 19:23:21,853 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 556 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:21,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 816 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:23:21,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23796 states. [2022-03-03 19:23:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23796 to 22142. [2022-03-03 19:23:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22142 states, 22141 states have (on average 2.5690348222754165) internal successors, (56881), 22141 states have internal predecessors, (56881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22142 states to 22142 states and 56881 transitions. [2022-03-03 19:23:22,272 INFO L78 Accepts]: Start accepts. Automaton has 22142 states and 56881 transitions. Word has length 32 [2022-03-03 19:23:22,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:22,272 INFO L470 AbstractCegarLoop]: Abstraction has 22142 states and 56881 transitions. [2022-03-03 19:23:22,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:22,272 INFO L276 IsEmpty]: Start isEmpty. Operand 22142 states and 56881 transitions. [2022-03-03 19:23:22,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:23:22,300 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:22,300 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:22,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:22,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-03-03 19:23:22,501 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:22,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:22,502 INFO L85 PathProgramCache]: Analyzing trace with hash -401816476, now seen corresponding path program 60 times [2022-03-03 19:23:22,502 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:22,502 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252268573] [2022-03-03 19:23:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:22,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:23,781 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:23,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252268573] [2022-03-03 19:23:23,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252268573] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:23,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262346184] [2022-03-03 19:23:23,782 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 19:23:23,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:23,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:23,783 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) [2022-03-03 19:23:23,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-03 19:23:23,825 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-03-03 19:23:23,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:23,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:23:23,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:24,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:26,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262346184] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:26,667 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:26,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:23:26,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102923892] [2022-03-03 19:23:26,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:26,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:23:26,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:26,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:23:26,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:23:26,668 INFO L87 Difference]: Start difference. First operand 22142 states and 56881 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:33,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:33,027 INFO L93 Difference]: Finished difference Result 23636 states and 60359 transitions. [2022-03-03 19:23:33,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-03 19:23:33,028 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:23:33,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:33,067 INFO L225 Difference]: With dead ends: 23636 [2022-03-03 19:23:33,067 INFO L226 Difference]: Without dead ends: 23522 [2022-03-03 19:23:33,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3194 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2151, Invalid=6221, Unknown=0, NotChecked=0, Total=8372 [2022-03-03 19:23:33,068 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 410 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:33,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 925 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:23:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23522 states. [2022-03-03 19:23:33,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23522 to 22430. [2022-03-03 19:23:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22430 states, 22429 states have (on average 2.568683400954122) internal successors, (57613), 22429 states have internal predecessors, (57613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:33,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22430 states to 22430 states and 57613 transitions. [2022-03-03 19:23:33,454 INFO L78 Accepts]: Start accepts. Automaton has 22430 states and 57613 transitions. Word has length 32 [2022-03-03 19:23:33,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:33,454 INFO L470 AbstractCegarLoop]: Abstraction has 22430 states and 57613 transitions. [2022-03-03 19:23:33,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:33,454 INFO L276 IsEmpty]: Start isEmpty. Operand 22430 states and 57613 transitions. [2022-03-03 19:23:33,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:23:33,481 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:33,481 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:33,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:33,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:33,682 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:33,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:33,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1666599668, now seen corresponding path program 61 times [2022-03-03 19:23:33,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:33,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415322365] [2022-03-03 19:23:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:33,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:33,813 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:33,814 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:33,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415322365] [2022-03-03 19:23:33,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415322365] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:33,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785420909] [2022-03-03 19:23:33,814 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 19:23:33,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:33,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:33,815 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) [2022-03-03 19:23:33,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-03 19:23:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:33,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:23:33,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:34,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:37,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785420909] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:37,724 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:37,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:23:37,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979446905] [2022-03-03 19:23:37,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:37,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:23:37,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:37,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:23:37,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:23:37,725 INFO L87 Difference]: Start difference. First operand 22430 states and 57613 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:43,007 INFO L93 Difference]: Finished difference Result 24110 states and 61506 transitions. [2022-03-03 19:23:43,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-03 19:23:43,007 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:23:43,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:43,047 INFO L225 Difference]: With dead ends: 24110 [2022-03-03 19:23:43,047 INFO L226 Difference]: Without dead ends: 24016 [2022-03-03 19:23:43,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3386 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2122, Invalid=6998, Unknown=0, NotChecked=0, Total=9120 [2022-03-03 19:23:43,048 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 490 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:43,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 740 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:23:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24016 states. [2022-03-03 19:23:43,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24016 to 22766. [2022-03-03 19:23:43,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22766 states, 22765 states have (on average 2.570129584889084) internal successors, (58509), 22765 states have internal predecessors, (58509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:43,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22766 states to 22766 states and 58509 transitions. [2022-03-03 19:23:43,512 INFO L78 Accepts]: Start accepts. Automaton has 22766 states and 58509 transitions. Word has length 32 [2022-03-03 19:23:43,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:43,512 INFO L470 AbstractCegarLoop]: Abstraction has 22766 states and 58509 transitions. [2022-03-03 19:23:43,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:43,512 INFO L276 IsEmpty]: Start isEmpty. Operand 22766 states and 58509 transitions. [2022-03-03 19:23:43,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:23:43,540 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:43,540 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:43,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:43,741 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,SelfDestructingSolverStorable67 [2022-03-03 19:23:43,741 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:43,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:43,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2012863408, now seen corresponding path program 62 times [2022-03-03 19:23:43,742 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:43,742 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649146418] [2022-03-03 19:23:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:43,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:50,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:50,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649146418] [2022-03-03 19:23:50,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649146418] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:50,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448405305] [2022-03-03 19:23:50,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 19:23:50,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:50,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:50,447 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) [2022-03-03 19:23:50,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-03 19:23:50,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 19:23:50,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:50,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:23:50,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:50,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:23:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:53,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448405305] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:23:53,094 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:23:53,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:23:53,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103507054] [2022-03-03 19:23:53,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:23:53,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:23:53,094 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:23:53,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:23:53,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=778, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:23:53,095 INFO L87 Difference]: Start difference. First operand 22766 states and 58509 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:56,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:23:56,661 INFO L93 Difference]: Finished difference Result 23974 states and 61409 transitions. [2022-03-03 19:23:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-03 19:23:56,661 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:23:56,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:23:56,698 INFO L225 Difference]: With dead ends: 23974 [2022-03-03 19:23:56,698 INFO L226 Difference]: Without dead ends: 23878 [2022-03-03 19:23:56,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2813 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1928, Invalid=6082, Unknown=0, NotChecked=0, Total=8010 [2022-03-03 19:23:56,700 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 449 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 19:23:56,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 339 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 19:23:56,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23878 states. [2022-03-03 19:23:57,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23878 to 22950. [2022-03-03 19:23:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22950 states, 22949 states have (on average 2.5702644995424637) internal successors, (58985), 22949 states have internal predecessors, (58985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:57,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22950 states to 22950 states and 58985 transitions. [2022-03-03 19:23:57,111 INFO L78 Accepts]: Start accepts. Automaton has 22950 states and 58985 transitions. Word has length 32 [2022-03-03 19:23:57,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:23:57,111 INFO L470 AbstractCegarLoop]: Abstraction has 22950 states and 58985 transitions. [2022-03-03 19:23:57,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:23:57,111 INFO L276 IsEmpty]: Start isEmpty. Operand 22950 states and 58985 transitions. [2022-03-03 19:23:57,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:23:57,140 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:23:57,140 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:23:57,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-03 19:23:57,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-03-03 19:23:57,340 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:23:57,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:23:57,342 INFO L85 PathProgramCache]: Analyzing trace with hash -2094413588, now seen corresponding path program 63 times [2022-03-03 19:23:57,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:23:57,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787387771] [2022-03-03 19:23:57,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:23:57,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:23:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:23:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:57,613 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:23:57,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787387771] [2022-03-03 19:23:57,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787387771] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:23:57,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141316420] [2022-03-03 19:23:57,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:23:57,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:23:57,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:23:57,614 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) [2022-03-03 19:23:57,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-03 19:23:57,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 19:23:57,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:23:57,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:23:57,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:23:58,376 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:23:58,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:01,189 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:01,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141316420] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:01,189 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:01,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:24:01,189 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380105837] [2022-03-03 19:24:01,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:01,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:24:01,189 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:01,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:24:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:24:01,190 INFO L87 Difference]: Start difference. First operand 22950 states and 58985 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:10,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:10,454 INFO L93 Difference]: Finished difference Result 24742 states and 63215 transitions. [2022-03-03 19:24:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-03 19:24:10,454 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:24:10,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:10,493 INFO L225 Difference]: With dead ends: 24742 [2022-03-03 19:24:10,494 INFO L226 Difference]: Without dead ends: 24662 [2022-03-03 19:24:10,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3712 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=2370, Invalid=7932, Unknown=0, NotChecked=0, Total=10302 [2022-03-03 19:24:10,495 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 608 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:10,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1064 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 19:24:10,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24662 states. [2022-03-03 19:24:10,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24662 to 23422. [2022-03-03 19:24:10,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23422 states, 23421 states have (on average 2.571239485931429) internal successors, (60221), 23421 states have internal predecessors, (60221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:10,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23422 states to 23422 states and 60221 transitions. [2022-03-03 19:24:10,910 INFO L78 Accepts]: Start accepts. Automaton has 23422 states and 60221 transitions. Word has length 32 [2022-03-03 19:24:10,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:10,910 INFO L470 AbstractCegarLoop]: Abstraction has 23422 states and 60221 transitions. [2022-03-03 19:24:10,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 23422 states and 60221 transitions. [2022-03-03 19:24:10,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:24:10,940 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:10,940 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:10,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:11,140 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,SelfDestructingSolverStorable69 [2022-03-03 19:24:11,140 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:11,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:11,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1638029608, now seen corresponding path program 64 times [2022-03-03 19:24:11,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:11,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028728516] [2022-03-03 19:24:11,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:11,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:11,291 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:11,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028728516] [2022-03-03 19:24:11,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028728516] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:11,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791985066] [2022-03-03 19:24:11,291 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 19:24:11,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:11,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:11,292 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) [2022-03-03 19:24:11,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-03 19:24:11,315 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 19:24:11,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:11,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:24:11,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:11,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:14,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791985066] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:14,470 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:14,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-03-03 19:24:14,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379059937] [2022-03-03 19:24:14,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:14,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-03 19:24:14,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:14,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-03 19:24:14,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=791, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 19:24:14,471 INFO L87 Difference]: Start difference. First operand 23422 states and 60221 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:24,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:24,492 INFO L93 Difference]: Finished difference Result 25442 states and 65073 transitions. [2022-03-03 19:24:24,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-03 19:24:24,492 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:24:24,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:24,533 INFO L225 Difference]: With dead ends: 25442 [2022-03-03 19:24:24,533 INFO L226 Difference]: Without dead ends: 25326 [2022-03-03 19:24:24,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5769 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=3294, Invalid=11226, Unknown=0, NotChecked=0, Total=14520 [2022-03-03 19:24:24,535 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 510 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:24,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 712 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:24:24,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25326 states. [2022-03-03 19:24:24,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25326 to 23862. [2022-03-03 19:24:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23862 states, 23861 states have (on average 2.57244038389003) internal successors, (61381), 23861 states have internal predecessors, (61381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:24,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23862 states to 23862 states and 61381 transitions. [2022-03-03 19:24:24,955 INFO L78 Accepts]: Start accepts. Automaton has 23862 states and 61381 transitions. Word has length 32 [2022-03-03 19:24:24,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:24,955 INFO L470 AbstractCegarLoop]: Abstraction has 23862 states and 61381 transitions. [2022-03-03 19:24:24,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:24,955 INFO L276 IsEmpty]: Start isEmpty. Operand 23862 states and 61381 transitions. [2022-03-03 19:24:24,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-03 19:24:24,984 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:24,984 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:25,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:25,185 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,SelfDestructingSolverStorable70 [2022-03-03 19:24:25,185 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:25,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:25,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1191496384, now seen corresponding path program 3 times [2022-03-03 19:24:25,185 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:25,185 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13221766] [2022-03-03 19:24:25,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:25,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:39,937 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:39,938 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:39,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13221766] [2022-03-03 19:24:39,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13221766] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:39,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189005258] [2022-03-03 19:24:39,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 19:24:39,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:39,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:39,939 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) [2022-03-03 19:24:39,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-03 19:24:39,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-03-03 19:24:39,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:39,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 19:24:39,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:40,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:41,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189005258] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:41,262 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:41,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2022-03-03 19:24:41,263 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679962621] [2022-03-03 19:24:41,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:41,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 19:24:41,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:41,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 19:24:41,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=712, Unknown=0, NotChecked=0, Total=992 [2022-03-03 19:24:41,263 INFO L87 Difference]: Start difference. First operand 23862 states and 61381 transitions. Second operand has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:42,945 INFO L93 Difference]: Finished difference Result 24538 states and 62835 transitions. [2022-03-03 19:24:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 19:24:42,946 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-03 19:24:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:42,986 INFO L225 Difference]: With dead ends: 24538 [2022-03-03 19:24:42,986 INFO L226 Difference]: Without dead ends: 24406 [2022-03-03 19:24:42,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1104, Invalid=3186, Unknown=0, NotChecked=0, Total=4290 [2022-03-03 19:24:42,987 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 276 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:42,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 664 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 19:24:43,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24406 states. [2022-03-03 19:24:43,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24406 to 23942. [2022-03-03 19:24:43,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23942 states, 23941 states have (on average 2.572365398270749) internal successors, (61585), 23941 states have internal predecessors, (61585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23942 states to 23942 states and 61585 transitions. [2022-03-03 19:24:43,399 INFO L78 Accepts]: Start accepts. Automaton has 23942 states and 61585 transitions. Word has length 32 [2022-03-03 19:24:43,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:43,399 INFO L470 AbstractCegarLoop]: Abstraction has 23942 states and 61585 transitions. [2022-03-03 19:24:43,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:43,399 INFO L276 IsEmpty]: Start isEmpty. Operand 23942 states and 61585 transitions. [2022-03-03 19:24:43,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:24:43,427 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:43,428 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:43,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:43,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:43,629 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:43,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:43,630 INFO L85 PathProgramCache]: Analyzing trace with hash 46825190, now seen corresponding path program 65 times [2022-03-03 19:24:43,631 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:43,631 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141521238] [2022-03-03 19:24:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:43,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 19:24:44,747 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 7 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:44,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 19:24:44,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141521238] [2022-03-03 19:24:44,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141521238] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 19:24:44,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692118233] [2022-03-03 19:24:44,748 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 19:24:44,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:44,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 19:24:44,749 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) [2022-03-03 19:24:44,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-03 19:24:44,772 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-03-03 19:24:44,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 19:24:44,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-03 19:24:44,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 19:24:45,727 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 7 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:45,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 19:24:48,631 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 7 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 19:24:48,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692118233] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 19:24:48,632 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 19:24:48,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2022-03-03 19:24:48,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036695181] [2022-03-03 19:24:48,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 19:24:48,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-03 19:24:48,632 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 19:24:48,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-03 19:24:48,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=828, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 19:24:48,633 INFO L87 Difference]: Start difference. First operand 23942 states and 61585 transitions. Second operand has 34 states, 34 states have (on average 2.411764705882353) internal successors, (82), 33 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:54,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 19:24:54,896 INFO L93 Difference]: Finished difference Result 25666 states and 65628 transitions. [2022-03-03 19:24:54,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-03 19:24:54,897 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.411764705882353) internal successors, (82), 33 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-03 19:24:54,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 19:24:54,939 INFO L225 Difference]: With dead ends: 25666 [2022-03-03 19:24:54,940 INFO L226 Difference]: Without dead ends: 25554 [2022-03-03 19:24:54,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2863 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2017, Invalid=5815, Unknown=0, NotChecked=0, Total=7832 [2022-03-03 19:24:54,941 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 740 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 19:24:54,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [740 Valid, 773 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 19:24:54,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25554 states. [2022-03-03 19:24:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25554 to 24326. [2022-03-03 19:24:55,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24326 states, 24325 states have (on average 2.573196300102775) internal successors, (62593), 24325 states have internal predecessors, (62593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:55,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24326 states to 24326 states and 62593 transitions. [2022-03-03 19:24:55,367 INFO L78 Accepts]: Start accepts. Automaton has 24326 states and 62593 transitions. Word has length 34 [2022-03-03 19:24:55,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 19:24:55,367 INFO L470 AbstractCegarLoop]: Abstraction has 24326 states and 62593 transitions. [2022-03-03 19:24:55,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.411764705882353) internal successors, (82), 33 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 19:24:55,368 INFO L276 IsEmpty]: Start isEmpty. Operand 24326 states and 62593 transitions. [2022-03-03 19:24:55,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-03 19:24:55,400 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 19:24:55,400 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 19:24:55,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-03 19:24:55,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 19:24:55,600 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-03 19:24:55,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 19:24:55,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1619176262, now seen corresponding path program 66 times [2022-03-03 19:24:55,601 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 19:24:55,601 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902439996] [2022-03-03 19:24:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 19:24:55,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 19:24:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2022-03-03 19:28:27,243 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-03 19:28:27,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-03-03 19:28:27,244 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 35 with TraceHistMax 6,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PolyPacSimplificationTermWalker was simplifying a ∧-17-4-11-4-12-4-11-4-11-4-11-4-10-4-10-4-10-4-10-4-10-4-10-4-9-4-8-4-8-4-8-4-7-4-4-4-4-4-4-4-4-4-4-4-3-4-2-4-2-4-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-2-2-3-3-2-2-2-2-2-2-1 context. [2022-03-03 19:28:27,246 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-03 19:28:27,246 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-03 19:28:27,247 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-03 19:28:27,252 INFO L732 BasicCegarLoop]: Path program histogram: [66, 3, 3, 2] [2022-03-03 19:28:27,252 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 19:28:27,254 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 19:28:27,254 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 19:28:27,256 INFO L202 PluginConnector]: Adding new model misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 07:28:27 BasicIcfg [2022-03-03 19:28:27,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 19:28:27,257 INFO L158 Benchmark]: Toolchain (without parser) took 773993.58ms. Allocated memory was 194.0MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 159.0MB in the beginning and 1.1GB in the end (delta: -966.4MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2022-03-03 19:28:27,257 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 19:28:27,257 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.78ms. Allocated memory is still 194.0MB. Free memory was 158.8MB in the beginning and 157.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 19:28:27,257 INFO L158 Benchmark]: Boogie Preprocessor took 13.82ms. Allocated memory is still 194.0MB. Free memory was 157.3MB in the beginning and 156.5MB in the end (delta: 871.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 19:28:27,257 INFO L158 Benchmark]: RCFGBuilder took 203.46ms. Allocated memory is still 194.0MB. Free memory was 156.3MB in the beginning and 146.4MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-03 19:28:27,257 INFO L158 Benchmark]: TraceAbstraction took 773735.73ms. Allocated memory was 194.0MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 146.0MB in the beginning and 1.1GB in the end (delta: -979.4MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2022-03-03 19:28:27,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.78ms. Allocated memory is still 194.0MB. Free memory was 158.8MB in the beginning and 157.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.82ms. Allocated memory is still 194.0MB. Free memory was 157.3MB in the beginning and 156.5MB in the end (delta: 871.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 203.46ms. Allocated memory is still 194.0MB. Free memory was 156.3MB in the beginning and 146.4MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 773735.73ms. Allocated memory was 194.0MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 146.0MB in the beginning and 1.1GB in the end (delta: -979.4MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 35 with TraceHistMax 6,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PolyPacSimplificationTermWalker was simplifying a ∧-17-4-11-4-12-4-11-4-11-4-11-4-10-4-10-4-10-4-10-4-10-4-10-4-9-4-8-4-8-4-8-4-7-4-4-4-4-4-4-4-4-4-4-4-3-4-2-4-2-4-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-2-2-3-3-2-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 35 with TraceHistMax 6,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PolyPacSimplificationTermWalker was simplifying a ∧-17-4-11-4-12-4-11-4-11-4-11-4-10-4-10-4-10-4-10-4-10-4-10-4-9-4-8-4-8-4-8-4-7-4-4-4-4-4-4-4-4-4-4-4-3-4-2-4-2-4-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-2-2-3-3-2-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 35 with TraceHistMax 6,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PolyPacSimplificationTermWalker was simplifying a ∧-17-4-11-4-12-4-11-4-11-4-11-4-10-4-10-4-10-4-10-4-10-4-10-4-9-4-8-4-8-4-8-4-7-4-4-4-4-4-4-4-4-4-4-4-3-4-2-4-2-4-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-2-2-3-3-2-2-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 35 with TraceHistMax 6,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PolyPacSimplificationTermWalker was simplifying a ∧-17-4-11-4-12-4-11-4-11-4-11-4-10-4-10-4-10-4-10-4-10-4-10-4-9-4-8-4-8-4-8-4-7-4-4-4-4-4-4-4-4-4-4-4-3-4-2-4-2-4-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-2-2-3-3-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 36 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 773.6s, OverallIterations: 74, TraceHistogramMax: 9, PathProgramHistogramMax: 66, EmptinessCheckTime: 0.8s, AutomataDifference: 311.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32621 SdHoareTripleChecker+Valid, 32.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32621 mSDsluCounter, 34641 SdHoareTripleChecker+Invalid, 27.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55171 mSDsCounter, 11680 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51777 IncrementalHoareTripleChecker+Invalid, 63457 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11680 mSolverCounterUnsat, 2543 mSDtfsCounter, 51777 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7878 GetRequests, 2811 SyntacticMatches, 4 SemanticMatches, 5063 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146787 ImplicationChecksByTransitivity, 325.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24326occurred in iteration=73, InterpolantAutomatonStates: 3730, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.3s AutomataMinimizationTime, 73 MinimizatonAttempts, 64336 StatesRemovedByMinimization, 70 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 221.2s InterpolantComputationTime, 4108 NumberOfCodeBlocks, 4108 NumberOfCodeBlocksAsserted, 334 NumberOfCheckSat, 5927 ConstructedInterpolants, 0 QuantifiedInterpolants, 224849 SizeOfPredicates, 205 NumberOfNonLiveVariables, 3852 ConjunctsInSsa, 944 ConjunctsInUnsatCore, 213 InterpolantComputations, 3 PerfectInterpolantSequences, 729/7291 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown