/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/popl20/threaded-sum-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-18 16:55:26,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-18 16:55:26,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-18 16:55:26,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-18 16:55:26,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-18 16:55:26,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-18 16:55:26,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-18 16:55:26,821 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 [2022-02-18 16:55:26,852 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-18 16:55:26,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-18 16:55:26,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-18 16:55:26,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-18 16:55:26,854 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-18 16:55:26,854 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-18 16:55:26,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-18 16:55:26,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-18 16:55:26,855 INFO L138 SettingsManager]: * Use SBE=true [2022-02-18 16:55:26,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-18 16:55:26,855 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-18 16:55:26,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-18 16:55:26,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-18 16:55:26,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-18 16:55:26,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-18 16:55:26,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-18 16:55:26,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-18 16:55:26,856 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-18 16:55:26,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-18 16:55:26,856 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-18 16:55:26,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-18 16:55:26,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-18 16:55:26,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-18 16:55:26,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-18 16:55:26,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-18 16:55:26,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 16:55:26,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-18 16:55:26,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-18 16:55:26,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-18 16:55:26,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-18 16:55:26,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-18 16:55:26,858 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-18 16:55:26,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-18 16:55:26,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-18 16:55:27,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-18 16:55:27,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-18 16:55:27,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-18 16:55:27,071 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-18 16:55:27,074 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-18 16:55:27,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl [2022-02-18 16:55:27,075 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl' [2022-02-18 16:55:27,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-18 16:55:27,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-18 16:55:27,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-18 16:55:27,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-18 16:55:27,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-18 16:55:27,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 04:55:27" (1/1) ... [2022-02-18 16:55:27,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 04:55:27" (1/1) ... [2022-02-18 16:55:27,124 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-18 16:55:27,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-18 16:55:27,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-18 16:55:27,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-18 16:55:27,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-18 16:55:27,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 04:55:27" (1/1) ... [2022-02-18 16:55:27,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 04:55:27" (1/1) ... [2022-02-18 16:55:27,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 04:55:27" (1/1) ... [2022-02-18 16:55:27,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 04:55:27" (1/1) ... [2022-02-18 16:55:27,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 04:55:27" (1/1) ... [2022-02-18 16:55:27,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 04:55:27" (1/1) ... [2022-02-18 16:55:27,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 04:55:27" (1/1) ... [2022-02-18 16:55:27,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-18 16:55:27,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-18 16:55:27,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-18 16:55:27,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-18 16:55:27,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 04:55:27" (1/1) ... [2022-02-18 16:55:27,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 16:55:27,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:55:27,185 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) [2022-02-18 16:55:27,191 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 [2022-02-18 16:55:27,216 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-18 16:55:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-18 16:55:27,216 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-18 16:55:27,216 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-18 16:55:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-18 16:55:27,216 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-18 16:55:27,216 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-18 16:55:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-18 16:55:27,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-18 16:55:27,217 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-18 16:55:27,218 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-18 16:55:27,218 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-18 16:55:27,218 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-18 16:55:27,267 INFO L234 CfgBuilder]: Building ICFG [2022-02-18 16:55:27,269 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-18 16:55:27,354 INFO L275 CfgBuilder]: Performing block encoding [2022-02-18 16:55:27,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-18 16:55:27,378 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-18 16:55:27,379 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:55:27 BoogieIcfgContainer [2022-02-18 16:55:27,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-18 16:55:27,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-18 16:55:27,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-18 16:55:27,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-18 16:55:27,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 04:55:27" (1/2) ... [2022-02-18 16:55:27,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83c33fd and model type threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:55:27, skipping insertion in model container [2022-02-18 16:55:27,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:55:27" (2/2) ... [2022-02-18 16:55:27,388 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-3.wvr.bpl [2022-02-18 16:55:27,392 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-18 16:55:27,392 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-18 16:55:27,392 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-18 16:55:27,392 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-18 16:55:27,426 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-18 16:55:27,462 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-18 16:55:27,467 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 [2022-02-18 16:55:27,468 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-18 16:55:27,477 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 33 transitions, 90 flow [2022-02-18 16:55:27,524 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:27,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:27,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-18 16:55:27,536 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:55:27,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:55:27,537 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:55:27,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:55:27,540 INFO L85 PathProgramCache]: Analyzing trace with hash -637092992, now seen corresponding path program 1 times [2022-02-18 16:55:27,546 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:55:27,546 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667408904] [2022-02-18 16:55:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:55:27,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:55:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:55:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:55:27,676 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:55:27,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667408904] [2022-02-18 16:55:27,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667408904] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 16:55:27,677 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 16:55:27,677 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-18 16:55:27,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276111653] [2022-02-18 16:55:27,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 16:55:27,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-18 16:55:27,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:55:27,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-18 16:55:27,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-18 16:55:27,708 INFO L87 Difference]: Start difference. First operand has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:27,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:55:27,774 INFO L93 Difference]: Finished difference Result 126 states and 331 transitions. [2022-02-18 16:55:27,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-18 16:55:27,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-18 16:55:27,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:55:27,785 INFO L225 Difference]: With dead ends: 126 [2022-02-18 16:55:27,785 INFO L226 Difference]: Without dead ends: 126 [2022-02-18 16:55:27,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-18 16:55:27,790 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 16:55:27,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 16:55:27,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-02-18 16:55:27,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-02-18 16:55:27,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.648) internal successors, (331), 125 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:27,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 331 transitions. [2022-02-18 16:55:27,865 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 331 transitions. Word has length 21 [2022-02-18 16:55:27,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:55:27,865 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 331 transitions. [2022-02-18 16:55:27,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:27,866 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 331 transitions. [2022-02-18 16:55:27,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-18 16:55:27,868 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:55:27,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:55:27,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-18 16:55:27,869 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:55:27,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:55:27,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1418210977, now seen corresponding path program 1 times [2022-02-18 16:55:27,869 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:55:27,871 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953420162] [2022-02-18 16:55:27,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:55:27,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:55:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:55:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 16:55:27,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:55:27,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953420162] [2022-02-18 16:55:27,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953420162] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 16:55:27,921 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 16:55:27,922 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-18 16:55:27,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793941886] [2022-02-18 16:55:27,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 16:55:27,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-18 16:55:27,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:55:27,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-18 16:55:27,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-18 16:55:27,924 INFO L87 Difference]: Start difference. First operand 126 states and 331 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:55:27,980 INFO L93 Difference]: Finished difference Result 176 states and 475 transitions. [2022-02-18 16:55:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-18 16:55:27,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-18 16:55:27,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:55:27,984 INFO L225 Difference]: With dead ends: 176 [2022-02-18 16:55:27,984 INFO L226 Difference]: Without dead ends: 176 [2022-02-18 16:55:27,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-18 16:55:27,989 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 16:55:27,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 34 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 16:55:27,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-02-18 16:55:28,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 151. [2022-02-18 16:55:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.6866666666666665) internal successors, (403), 150 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 403 transitions. [2022-02-18 16:55:28,026 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 403 transitions. Word has length 24 [2022-02-18 16:55:28,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:55:28,034 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 403 transitions. [2022-02-18 16:55:28,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:28,035 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 403 transitions. [2022-02-18 16:55:28,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-18 16:55:28,042 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:55:28,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:55:28,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-18 16:55:28,043 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:55:28,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:55:28,044 INFO L85 PathProgramCache]: Analyzing trace with hash 365469361, now seen corresponding path program 1 times [2022-02-18 16:55:28,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:55:28,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091302713] [2022-02-18 16:55:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:55:28,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:55:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:55:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:55:28,126 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:55:28,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091302713] [2022-02-18 16:55:28,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091302713] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 16:55:28,126 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 16:55:28,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-18 16:55:28,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034224064] [2022-02-18 16:55:28,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 16:55:28,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-18 16:55:28,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:55:28,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-18 16:55:28,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-18 16:55:28,129 INFO L87 Difference]: Start difference. First operand 151 states and 403 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:28,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:55:28,187 INFO L93 Difference]: Finished difference Result 223 states and 619 transitions. [2022-02-18 16:55:28,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-18 16:55:28,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-18 16:55:28,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:55:28,190 INFO L225 Difference]: With dead ends: 223 [2022-02-18 16:55:28,190 INFO L226 Difference]: Without dead ends: 223 [2022-02-18 16:55:28,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-18 16:55:28,192 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 46 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 16:55:28,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 34 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 16:55:28,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-02-18 16:55:28,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2022-02-18 16:55:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 2.7882882882882885) internal successors, (619), 222 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:28,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 619 transitions. [2022-02-18 16:55:28,213 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 619 transitions. Word has length 26 [2022-02-18 16:55:28,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:55:28,214 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 619 transitions. [2022-02-18 16:55:28,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:28,214 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 619 transitions. [2022-02-18 16:55:28,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-18 16:55:28,216 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:55:28,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:55:28,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-18 16:55:28,216 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:55:28,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:55:28,217 INFO L85 PathProgramCache]: Analyzing trace with hash 282875335, now seen corresponding path program 1 times [2022-02-18 16:55:28,217 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:55:28,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253430072] [2022-02-18 16:55:28,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:55:28,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:55:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:55:28,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-18 16:55:28,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:55:28,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253430072] [2022-02-18 16:55:28,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253430072] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 16:55:28,279 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 16:55:28,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-18 16:55:28,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515304818] [2022-02-18 16:55:28,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 16:55:28,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-18 16:55:28,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:55:28,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-18 16:55:28,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-18 16:55:28,281 INFO L87 Difference]: Start difference. First operand 223 states and 619 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:55:28,329 INFO L93 Difference]: Finished difference Result 344 states and 930 transitions. [2022-02-18 16:55:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-18 16:55:28,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-02-18 16:55:28,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:55:28,333 INFO L225 Difference]: With dead ends: 344 [2022-02-18 16:55:28,333 INFO L226 Difference]: Without dead ends: 308 [2022-02-18 16:55:28,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-18 16:55:28,334 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 66 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 16:55:28,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 28 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 16:55:28,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-02-18 16:55:28,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 235. [2022-02-18 16:55:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 2.8076923076923075) internal successors, (657), 234 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:28,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 657 transitions. [2022-02-18 16:55:28,353 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 657 transitions. Word has length 28 [2022-02-18 16:55:28,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:55:28,354 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 657 transitions. [2022-02-18 16:55:28,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:28,354 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 657 transitions. [2022-02-18 16:55:28,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-18 16:55:28,355 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:55:28,355 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:55:28,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-18 16:55:28,356 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:55:28,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:55:28,357 INFO L85 PathProgramCache]: Analyzing trace with hash 290186221, now seen corresponding path program 2 times [2022-02-18 16:55:28,357 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:55:28,357 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282256136] [2022-02-18 16:55:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:55:28,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:55:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:55:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 16:55:28,479 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:55:28,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282256136] [2022-02-18 16:55:28,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282256136] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:55:28,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082876494] [2022-02-18 16:55:28,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 16:55:28,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:55:28,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:55:28,487 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) [2022-02-18 16:55:28,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-18 16:55:28,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 16:55:28,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:55:28,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 16:55:28,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:55:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 16:55:28,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:55:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 16:55:29,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082876494] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:55:29,283 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:55:29,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2022-02-18 16:55:29,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946246275] [2022-02-18 16:55:29,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:55:29,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-18 16:55:29,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:55:29,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-18 16:55:29,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2022-02-18 16:55:29,289 INFO L87 Difference]: Start difference. First operand 235 states and 657 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:30,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:55:30,061 INFO L93 Difference]: Finished difference Result 633 states and 1787 transitions. [2022-02-18 16:55:30,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-18 16:55:30,062 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-18 16:55:30,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:55:30,066 INFO L225 Difference]: With dead ends: 633 [2022-02-18 16:55:30,066 INFO L226 Difference]: Without dead ends: 633 [2022-02-18 16:55:30,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=526, Invalid=1196, Unknown=0, NotChecked=0, Total=1722 [2022-02-18 16:55:30,071 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 226 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 16:55:30,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 106 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 16:55:30,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-02-18 16:55:30,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 316. [2022-02-18 16:55:30,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 2.961904761904762) internal successors, (933), 315 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:30,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 933 transitions. [2022-02-18 16:55:30,107 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 933 transitions. Word has length 30 [2022-02-18 16:55:30,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:55:30,107 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 933 transitions. [2022-02-18 16:55:30,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:30,107 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 933 transitions. [2022-02-18 16:55:30,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-18 16:55:30,113 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:55:30,115 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:55:30,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-18 16:55:30,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:55:30,340 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:55:30,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:55:30,340 INFO L85 PathProgramCache]: Analyzing trace with hash 581986797, now seen corresponding path program 3 times [2022-02-18 16:55:30,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:55:30,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635275973] [2022-02-18 16:55:30,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:55:30,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:55:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:55:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 16:55:30,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:55:30,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635275973] [2022-02-18 16:55:30,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635275973] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:55:30,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565732449] [2022-02-18 16:55:30,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 16:55:30,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:55:30,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:55:30,456 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) [2022-02-18 16:55:30,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-18 16:55:30,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 16:55:30,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:55:30,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 16:55:30,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:55:30,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 16:55:30,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:55:31,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:55:31,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565732449] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:55:31,097 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:55:31,097 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 17 [2022-02-18 16:55:31,097 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10682533] [2022-02-18 16:55:31,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:55:31,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-18 16:55:31,098 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:55:31,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-18 16:55:31,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-02-18 16:55:31,099 INFO L87 Difference]: Start difference. First operand 316 states and 933 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:31,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:55:31,490 INFO L93 Difference]: Finished difference Result 861 states and 2534 transitions. [2022-02-18 16:55:31,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-18 16:55:31,491 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-02-18 16:55:31,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:55:31,496 INFO L225 Difference]: With dead ends: 861 [2022-02-18 16:55:31,497 INFO L226 Difference]: Without dead ends: 861 [2022-02-18 16:55:31,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=591, Unknown=0, NotChecked=0, Total=870 [2022-02-18 16:55:31,502 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 297 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-18 16:55:31,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 107 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-18 16:55:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-02-18 16:55:31,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 588. [2022-02-18 16:55:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 3.06984667802385) internal successors, (1802), 587 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1802 transitions. [2022-02-18 16:55:31,531 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1802 transitions. Word has length 30 [2022-02-18 16:55:31,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:55:31,533 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1802 transitions. [2022-02-18 16:55:31,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:31,533 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1802 transitions. [2022-02-18 16:55:31,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-18 16:55:31,535 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:55:31,535 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:55:31,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-18 16:55:31,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-02-18 16:55:31,758 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:55:31,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:55:31,758 INFO L85 PathProgramCache]: Analyzing trace with hash -101147565, now seen corresponding path program 4 times [2022-02-18 16:55:31,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:55:31,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365064312] [2022-02-18 16:55:31,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:55:31,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:55:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:55:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 16:55:31,892 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:55:31,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365064312] [2022-02-18 16:55:31,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365064312] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:55:31,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81530123] [2022-02-18 16:55:31,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 16:55:31,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:55:31,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:55:31,894 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) [2022-02-18 16:55:31,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-18 16:55:31,931 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 16:55:31,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:55:31,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-18 16:55:31,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:55:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 16:55:32,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:55:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 16:55:32,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81530123] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:55:32,594 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:55:32,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 23 [2022-02-18 16:55:32,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971994205] [2022-02-18 16:55:32,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:55:32,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-18 16:55:32,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:55:32,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-18 16:55:32,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2022-02-18 16:55:32,596 INFO L87 Difference]: Start difference. First operand 588 states and 1802 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:33,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:55:33,462 INFO L93 Difference]: Finished difference Result 975 states and 2760 transitions. [2022-02-18 16:55:33,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-18 16:55:33,462 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-18 16:55:33,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:55:33,468 INFO L225 Difference]: With dead ends: 975 [2022-02-18 16:55:33,468 INFO L226 Difference]: Without dead ends: 975 [2022-02-18 16:55:33,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=581, Invalid=1581, Unknown=0, NotChecked=0, Total=2162 [2022-02-18 16:55:33,470 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 242 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-18 16:55:33,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 184 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-18 16:55:33,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-02-18 16:55:33,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 710. [2022-02-18 16:55:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 3.011283497884344) internal successors, (2135), 709 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2135 transitions. [2022-02-18 16:55:33,494 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2135 transitions. Word has length 32 [2022-02-18 16:55:33,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:55:33,495 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 2135 transitions. [2022-02-18 16:55:33,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:33,495 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2135 transitions. [2022-02-18 16:55:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-18 16:55:33,497 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:55:33,497 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:55:33,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-18 16:55:33,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:55:33,711 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:55:33,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:55:33,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1192213421, now seen corresponding path program 5 times [2022-02-18 16:55:33,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:55:33,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999535682] [2022-02-18 16:55:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:55:33,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:55:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:55:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:55:33,844 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:55:33,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999535682] [2022-02-18 16:55:33,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999535682] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:55:33,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26433699] [2022-02-18 16:55:33,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 16:55:33,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:55:33,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:55:33,845 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) [2022-02-18 16:55:33,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-18 16:55:33,873 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 16:55:33,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:55:33,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-18 16:55:33,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:55:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:55:34,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:55:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:55:34,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26433699] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:55:34,557 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:55:34,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 25 [2022-02-18 16:55:34,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456720534] [2022-02-18 16:55:34,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:55:34,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-18 16:55:34,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:55:34,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-18 16:55:34,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2022-02-18 16:55:34,560 INFO L87 Difference]: Start difference. First operand 710 states and 2135 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:36,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:55:36,595 INFO L93 Difference]: Finished difference Result 1943 states and 5560 transitions. [2022-02-18 16:55:36,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-18 16:55:36,596 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-18 16:55:36,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:55:36,605 INFO L225 Difference]: With dead ends: 1943 [2022-02-18 16:55:36,605 INFO L226 Difference]: Without dead ends: 1943 [2022-02-18 16:55:36,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2574 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1583, Invalid=5557, Unknown=0, NotChecked=0, Total=7140 [2022-02-18 16:55:36,608 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 278 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 16:55:36,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 329 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 16:55:36,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2022-02-18 16:55:36,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 826. [2022-02-18 16:55:36,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 3.0715151515151513) internal successors, (2534), 825 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 2534 transitions. [2022-02-18 16:55:36,640 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 2534 transitions. Word has length 32 [2022-02-18 16:55:36,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:55:36,640 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 2534 transitions. [2022-02-18 16:55:36,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:36,640 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 2534 transitions. [2022-02-18 16:55:36,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-18 16:55:36,642 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:55:36,642 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:55:36,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-18 16:55:36,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:55:36,865 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:55:36,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:55:36,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1582175149, now seen corresponding path program 6 times [2022-02-18 16:55:36,866 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:55:36,866 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454548904] [2022-02-18 16:55:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:55:36,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:55:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:55:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:55:36,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:55:36,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454548904] [2022-02-18 16:55:36,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454548904] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:55:36,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363477596] [2022-02-18 16:55:36,990 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 16:55:36,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:55:36,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:55:36,991 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) [2022-02-18 16:55:36,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-18 16:55:37,019 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 16:55:37,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:55:37,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-18 16:55:37,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:55:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:55:37,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:55:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:55:37,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363477596] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:55:37,673 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:55:37,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 26 [2022-02-18 16:55:37,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329940274] [2022-02-18 16:55:37,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:55:37,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-18 16:55:37,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:55:37,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-18 16:55:37,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2022-02-18 16:55:37,675 INFO L87 Difference]: Start difference. First operand 826 states and 2534 transitions. Second operand has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:40,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:55:40,166 INFO L93 Difference]: Finished difference Result 2939 states and 8774 transitions. [2022-02-18 16:55:40,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-18 16:55:40,167 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-18 16:55:40,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:55:40,182 INFO L225 Difference]: With dead ends: 2939 [2022-02-18 16:55:40,182 INFO L226 Difference]: Without dead ends: 2939 [2022-02-18 16:55:40,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4324 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2652, Invalid=8060, Unknown=0, NotChecked=0, Total=10712 [2022-02-18 16:55:40,186 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 411 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 16:55:40,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 295 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 16:55:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-02-18 16:55:40,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1137. [2022-02-18 16:55:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1136 states have (on average 3.1778169014084505) internal successors, (3610), 1136 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 3610 transitions. [2022-02-18 16:55:40,234 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 3610 transitions. Word has length 32 [2022-02-18 16:55:40,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:55:40,236 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 3610 transitions. [2022-02-18 16:55:40,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 3610 transitions. [2022-02-18 16:55:40,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-18 16:55:40,240 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:55:40,240 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:55:40,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-18 16:55:40,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:55:40,456 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:55:40,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:55:40,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1367115515, now seen corresponding path program 7 times [2022-02-18 16:55:40,457 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:55:40,457 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743980476] [2022-02-18 16:55:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:55:40,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:55:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:55:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:55:40,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:55:40,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743980476] [2022-02-18 16:55:40,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743980476] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:55:40,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813144874] [2022-02-18 16:55:40,590 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 16:55:40,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:55:40,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:55:40,596 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) [2022-02-18 16:55:40,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-18 16:55:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:55:40,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-18 16:55:40,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:55:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:55:40,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:55:41,460 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:55:41,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813144874] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:55:41,461 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:55:41,461 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-02-18 16:55:41,461 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800712994] [2022-02-18 16:55:41,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:55:41,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-18 16:55:41,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:55:41,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-18 16:55:41,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-02-18 16:55:41,462 INFO L87 Difference]: Start difference. First operand 1137 states and 3610 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:43,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:55:43,098 INFO L93 Difference]: Finished difference Result 4727 states and 14426 transitions. [2022-02-18 16:55:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-18 16:55:43,098 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-18 16:55:43,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:55:43,140 INFO L225 Difference]: With dead ends: 4727 [2022-02-18 16:55:43,140 INFO L226 Difference]: Without dead ends: 4727 [2022-02-18 16:55:43,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1162, Invalid=3128, Unknown=0, NotChecked=0, Total=4290 [2022-02-18 16:55:43,142 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 554 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 16:55:43,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 222 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 16:55:43,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2022-02-18 16:55:43,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 2168. [2022-02-18 16:55:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2167 states have (on average 3.2459621596677435) internal successors, (7034), 2167 states have internal predecessors, (7034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:43,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 7034 transitions. [2022-02-18 16:55:43,225 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 7034 transitions. Word has length 32 [2022-02-18 16:55:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:55:43,226 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 7034 transitions. [2022-02-18 16:55:43,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:43,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 7034 transitions. [2022-02-18 16:55:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-18 16:55:43,232 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:55:43,232 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:55:43,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-18 16:55:43,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:55:43,447 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:55:43,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:55:43,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1458806875, now seen corresponding path program 8 times [2022-02-18 16:55:43,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:55:43,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570988492] [2022-02-18 16:55:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:55:43,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:55:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:55:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-18 16:55:43,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:55:43,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570988492] [2022-02-18 16:55:43,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570988492] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:55:43,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9212511] [2022-02-18 16:55:43,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 16:55:43,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:55:43,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:55:43,528 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) [2022-02-18 16:55:43,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-18 16:55:43,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 16:55:43,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:55:43,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-18 16:55:43,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:55:43,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-18 16:55:43,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:55:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:55:44,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9212511] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:55:44,124 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:55:44,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 18 [2022-02-18 16:55:44,124 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143691188] [2022-02-18 16:55:44,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:55:44,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-18 16:55:44,125 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:55:44,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-18 16:55:44,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-02-18 16:55:44,125 INFO L87 Difference]: Start difference. First operand 2168 states and 7034 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:44,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:55:44,250 INFO L93 Difference]: Finished difference Result 2799 states and 8918 transitions. [2022-02-18 16:55:44,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-18 16:55:44,251 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-02-18 16:55:44,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:55:44,264 INFO L225 Difference]: With dead ends: 2799 [2022-02-18 16:55:44,264 INFO L226 Difference]: Without dead ends: 2799 [2022-02-18 16:55:44,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2022-02-18 16:55:44,265 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 349 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-18 16:55:44,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 68 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-18 16:55:44,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-02-18 16:55:44,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2149. [2022-02-18 16:55:44,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2148 states have (on average 3.241154562383613) internal successors, (6962), 2148 states have internal predecessors, (6962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:44,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 6962 transitions. [2022-02-18 16:55:44,346 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 6962 transitions. Word has length 32 [2022-02-18 16:55:44,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:55:44,346 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 6962 transitions. [2022-02-18 16:55:44,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:44,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 6962 transitions. [2022-02-18 16:55:44,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:55:44,351 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:55:44,351 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:55:44,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-18 16:55:44,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:55:44,575 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:55:44,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:55:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash 412803505, now seen corresponding path program 9 times [2022-02-18 16:55:44,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:55:44,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998291744] [2022-02-18 16:55:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:55:44,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:55:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:55:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 16:55:44,928 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:55:44,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998291744] [2022-02-18 16:55:44,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998291744] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:55:44,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328550019] [2022-02-18 16:55:44,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 16:55:44,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:55:44,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:55:44,930 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) [2022-02-18 16:55:44,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-18 16:55:44,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 16:55:44,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:55:44,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-18 16:55:44,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:55:45,884 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:55:45,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:55:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:55:47,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328550019] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:55:47,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:55:47,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-02-18 16:55:47,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769683051] [2022-02-18 16:55:47,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:55:47,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-18 16:55:47,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:55:47,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-18 16:55:47,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1815, Unknown=0, NotChecked=0, Total=2162 [2022-02-18 16:55:47,613 INFO L87 Difference]: Start difference. First operand 2149 states and 6962 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:55:59,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:55:59,937 INFO L93 Difference]: Finished difference Result 7861 states and 24237 transitions. [2022-02-18 16:55:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-02-18 16:55:59,938 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:55:59,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:55:59,962 INFO L225 Difference]: With dead ends: 7861 [2022-02-18 16:55:59,962 INFO L226 Difference]: Without dead ends: 7696 [2022-02-18 16:55:59,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10002 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=4125, Invalid=23597, Unknown=0, NotChecked=0, Total=27722 [2022-02-18 16:55:59,968 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 828 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 4354 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 4826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 4354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-18 16:55:59,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 505 Invalid, 4826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 4354 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-18 16:55:59,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7696 states. [2022-02-18 16:56:00,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7696 to 2969. [2022-02-18 16:56:00,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2968 states have (on average 3.253369272237197) internal successors, (9656), 2968 states have internal predecessors, (9656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:56:00,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 9656 transitions. [2022-02-18 16:56:00,113 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 9656 transitions. Word has length 34 [2022-02-18 16:56:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:56:00,113 INFO L470 AbstractCegarLoop]: Abstraction has 2969 states and 9656 transitions. [2022-02-18 16:56:00,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:56:00,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 9656 transitions. [2022-02-18 16:56:00,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:56:00,121 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:56:00,121 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:56:00,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-18 16:56:00,322 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,SelfDestructingSolverStorable11 [2022-02-18 16:56:00,322 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:56:00,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:56:00,323 INFO L85 PathProgramCache]: Analyzing trace with hash 971839921, now seen corresponding path program 10 times [2022-02-18 16:56:00,323 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:56:00,323 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317088496] [2022-02-18 16:56:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:56:00,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:56:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:56:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:56:00,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:56:00,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317088496] [2022-02-18 16:56:00,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317088496] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:56:00,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385518336] [2022-02-18 16:56:00,691 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 16:56:00,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:56:00,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:56:00,692 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) [2022-02-18 16:56:00,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-18 16:56:00,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 16:56:00,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:56:00,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-18 16:56:00,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:56:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:56:01,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:56:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:56:02,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385518336] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:56:02,969 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:56:02,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-02-18 16:56:02,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858457672] [2022-02-18 16:56:02,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:56:02,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-18 16:56:02,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:56:02,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-18 16:56:02,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=2215, Unknown=0, NotChecked=0, Total=2652 [2022-02-18 16:56:02,970 INFO L87 Difference]: Start difference. First operand 2969 states and 9656 transitions. Second operand has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:56:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:56:18,646 INFO L93 Difference]: Finished difference Result 10912 states and 33148 transitions. [2022-02-18 16:56:18,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-02-18 16:56:18,646 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:56:18,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:56:18,680 INFO L225 Difference]: With dead ends: 10912 [2022-02-18 16:56:18,681 INFO L226 Difference]: Without dead ends: 10686 [2022-02-18 16:56:18,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21166 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=9279, Invalid=42477, Unknown=0, NotChecked=0, Total=51756 [2022-02-18 16:56:18,686 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 1151 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 3541 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 4259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 3541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-18 16:56:18,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 698 Invalid, 4259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 3541 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-18 16:56:18,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10686 states. [2022-02-18 16:56:18,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10686 to 3913. [2022-02-18 16:56:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3913 states, 3912 states have (on average 3.280930470347648) internal successors, (12835), 3912 states have internal predecessors, (12835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:56:18,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 12835 transitions. [2022-02-18 16:56:18,867 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 12835 transitions. Word has length 34 [2022-02-18 16:56:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:56:18,869 INFO L470 AbstractCegarLoop]: Abstraction has 3913 states and 12835 transitions. [2022-02-18 16:56:18,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:56:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 12835 transitions. [2022-02-18 16:56:18,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:56:18,880 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:56:18,880 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:56:18,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-18 16:56:19,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-02-18 16:56:19,103 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:56:19,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:56:19,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1964333485, now seen corresponding path program 11 times [2022-02-18 16:56:19,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:56:19,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501331116] [2022-02-18 16:56:19,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:56:19,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:56:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:56:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:56:19,432 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:56:19,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501331116] [2022-02-18 16:56:19,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501331116] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:56:19,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247276639] [2022-02-18 16:56:19,432 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 16:56:19,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:56:19,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:56:19,433 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) [2022-02-18 16:56:19,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-18 16:56:19,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-18 16:56:19,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:56:19,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-18 16:56:19,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:56:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:56:20,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:56:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:56:21,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247276639] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:56:21,527 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:56:21,527 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-02-18 16:56:21,527 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726822094] [2022-02-18 16:56:21,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:56:21,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-18 16:56:21,527 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:56:21,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-18 16:56:21,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=2219, Unknown=0, NotChecked=0, Total=2652 [2022-02-18 16:56:21,528 INFO L87 Difference]: Start difference. First operand 3913 states and 12835 transitions. Second operand has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:56:35,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:56:35,821 INFO L93 Difference]: Finished difference Result 11044 states and 33819 transitions. [2022-02-18 16:56:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-02-18 16:56:35,821 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:56:35,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:56:35,850 INFO L225 Difference]: With dead ends: 11044 [2022-02-18 16:56:35,850 INFO L226 Difference]: Without dead ends: 10842 [2022-02-18 16:56:35,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25049 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=10854, Invalid=48438, Unknown=0, NotChecked=0, Total=59292 [2022-02-18 16:56:35,854 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1206 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 4666 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 5389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 4666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-18 16:56:35,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1206 Valid, 686 Invalid, 5389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 4666 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-18 16:56:35,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10842 states. [2022-02-18 16:56:36,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10842 to 4299. [2022-02-18 16:56:36,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4299 states, 4298 states have (on average 3.3187529083294556) internal successors, (14264), 4298 states have internal predecessors, (14264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:56:36,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4299 states to 4299 states and 14264 transitions. [2022-02-18 16:56:36,039 INFO L78 Accepts]: Start accepts. Automaton has 4299 states and 14264 transitions. Word has length 34 [2022-02-18 16:56:36,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:56:36,039 INFO L470 AbstractCegarLoop]: Abstraction has 4299 states and 14264 transitions. [2022-02-18 16:56:36,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:56:36,040 INFO L276 IsEmpty]: Start isEmpty. Operand 4299 states and 14264 transitions. [2022-02-18 16:56:36,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:56:36,050 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:56:36,050 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:56:36,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-18 16:56:36,270 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,SelfDestructingSolverStorable13 [2022-02-18 16:56:36,270 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:56:36,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:56:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1613065811, now seen corresponding path program 12 times [2022-02-18 16:56:36,271 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:56:36,271 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262218706] [2022-02-18 16:56:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:56:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:56:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:56:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:56:36,616 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:56:36,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262218706] [2022-02-18 16:56:36,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262218706] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:56:36,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967943770] [2022-02-18 16:56:36,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 16:56:36,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:56:36,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:56:36,618 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) [2022-02-18 16:56:36,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-18 16:56:36,644 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-18 16:56:36,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:56:36,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-18 16:56:36,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:56:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:56:37,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:56:38,673 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:56:38,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967943770] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:56:38,673 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:56:38,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 18] total 48 [2022-02-18 16:56:38,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073382346] [2022-02-18 16:56:38,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:56:38,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-18 16:56:38,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:56:38,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-18 16:56:38,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=1916, Unknown=0, NotChecked=0, Total=2352 [2022-02-18 16:56:38,675 INFO L87 Difference]: Start difference. First operand 4299 states and 14264 transitions. Second operand has 49 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:56:52,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:56:52,670 INFO L93 Difference]: Finished difference Result 10733 states and 33404 transitions. [2022-02-18 16:56:52,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2022-02-18 16:56:52,670 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:56:52,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:56:52,699 INFO L225 Difference]: With dead ends: 10733 [2022-02-18 16:56:52,699 INFO L226 Difference]: Without dead ends: 10515 [2022-02-18 16:56:52,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20891 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=9352, Invalid=41498, Unknown=0, NotChecked=0, Total=50850 [2022-02-18 16:56:52,703 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 1236 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 4492 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 5091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 4492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-18 16:56:52,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1236 Valid, 745 Invalid, 5091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 4492 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-18 16:56:52,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2022-02-18 16:56:52,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 3833. [2022-02-18 16:56:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3832 states have (on average 3.2917536534446765) internal successors, (12614), 3832 states have internal predecessors, (12614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:56:52,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 12614 transitions. [2022-02-18 16:56:52,871 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 12614 transitions. Word has length 34 [2022-02-18 16:56:52,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:56:52,871 INFO L470 AbstractCegarLoop]: Abstraction has 3833 states and 12614 transitions. [2022-02-18 16:56:52,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:56:52,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 12614 transitions. [2022-02-18 16:56:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:56:52,881 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:56:52,881 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:56:52,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-18 16:56:53,095 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,SelfDestructingSolverStorable14 [2022-02-18 16:56:53,095 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:56:53,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:56:53,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1621951143, now seen corresponding path program 13 times [2022-02-18 16:56:53,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:56:53,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945713860] [2022-02-18 16:56:53,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:56:53,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:56:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:56:53,471 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:56:53,471 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:56:53,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945713860] [2022-02-18 16:56:53,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945713860] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:56:53,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144865343] [2022-02-18 16:56:53,471 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 16:56:53,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:56:53,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:56:53,476 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) [2022-02-18 16:56:53,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-18 16:56:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:56:53,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-18 16:56:53,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:56:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:56:54,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:56:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:56:56,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144865343] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:56:56,815 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:56:56,815 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 50 [2022-02-18 16:56:56,815 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805381157] [2022-02-18 16:56:56,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:56:56,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-18 16:56:56,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:56:56,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-18 16:56:56,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=2166, Unknown=0, NotChecked=0, Total=2550 [2022-02-18 16:56:56,816 INFO L87 Difference]: Start difference. First operand 3833 states and 12614 transitions. Second operand has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 50 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:57:11,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:57:11,004 INFO L93 Difference]: Finished difference Result 10462 states and 32329 transitions. [2022-02-18 16:57:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-02-18 16:57:11,004 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 50 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:57:11,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:57:11,036 INFO L225 Difference]: With dead ends: 10462 [2022-02-18 16:57:11,036 INFO L226 Difference]: Without dead ends: 10307 [2022-02-18 16:57:11,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7919 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=3778, Invalid=17978, Unknown=0, NotChecked=0, Total=21756 [2022-02-18 16:57:11,038 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 682 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-18 16:57:11,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 598 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-18 16:57:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10307 states. [2022-02-18 16:57:11,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10307 to 4521. [2022-02-18 16:57:11,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4521 states, 4520 states have (on average 3.308628318584071) internal successors, (14955), 4520 states have internal predecessors, (14955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:57:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 14955 transitions. [2022-02-18 16:57:11,210 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 14955 transitions. Word has length 34 [2022-02-18 16:57:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:57:11,210 INFO L470 AbstractCegarLoop]: Abstraction has 4521 states and 14955 transitions. [2022-02-18 16:57:11,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 50 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:57:11,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 14955 transitions. [2022-02-18 16:57:11,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:57:11,220 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:57:11,220 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:57:11,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-18 16:57:11,435 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,SelfDestructingSolverStorable15 [2022-02-18 16:57:11,435 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:57:11,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:57:11,436 INFO L85 PathProgramCache]: Analyzing trace with hash 596520025, now seen corresponding path program 14 times [2022-02-18 16:57:11,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:57:11,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366440254] [2022-02-18 16:57:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:57:11,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:57:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:57:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:57:11,792 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:57:11,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366440254] [2022-02-18 16:57:11,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366440254] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:57:11,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520965675] [2022-02-18 16:57:11,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 16:57:11,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:57:11,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:57:11,794 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) [2022-02-18 16:57:11,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-18 16:57:11,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 16:57:11,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:57:11,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-18 16:57:11,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:57:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:57:12,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:57:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:57:14,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520965675] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:57:14,270 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:57:14,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 17] total 47 [2022-02-18 16:57:14,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938446965] [2022-02-18 16:57:14,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:57:14,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-18 16:57:14,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:57:14,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-18 16:57:14,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1896, Unknown=0, NotChecked=0, Total=2256 [2022-02-18 16:57:14,271 INFO L87 Difference]: Start difference. First operand 4521 states and 14955 transitions. Second operand has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:57:30,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:57:30,961 INFO L93 Difference]: Finished difference Result 11942 states and 37849 transitions. [2022-02-18 16:57:30,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2022-02-18 16:57:30,962 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:57:30,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:57:30,983 INFO L225 Difference]: With dead ends: 11942 [2022-02-18 16:57:30,984 INFO L226 Difference]: Without dead ends: 11777 [2022-02-18 16:57:30,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20629 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=7611, Invalid=44145, Unknown=0, NotChecked=0, Total=51756 [2022-02-18 16:57:30,986 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 865 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 5286 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 5767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 5286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-18 16:57:30,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 570 Invalid, 5767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 5286 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-18 16:57:30,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11777 states. [2022-02-18 16:57:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11777 to 4932. [2022-02-18 16:57:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4932 states, 4931 states have (on average 3.3050091259379437) internal successors, (16297), 4931 states have internal predecessors, (16297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:57:31,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 16297 transitions. [2022-02-18 16:57:31,161 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 16297 transitions. Word has length 34 [2022-02-18 16:57:31,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:57:31,161 INFO L470 AbstractCegarLoop]: Abstraction has 4932 states and 16297 transitions. [2022-02-18 16:57:31,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:57:31,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 16297 transitions. [2022-02-18 16:57:31,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:57:31,173 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:57:31,173 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:57:31,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-18 16:57:31,373 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,SelfDestructingSolverStorable16 [2022-02-18 16:57:31,374 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:57:31,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:57:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1798267431, now seen corresponding path program 15 times [2022-02-18 16:57:31,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:57:31,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852421800] [2022-02-18 16:57:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:57:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:57:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:57:31,737 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:57:31,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:57:31,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852421800] [2022-02-18 16:57:31,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852421800] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:57:31,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292230266] [2022-02-18 16:57:31,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 16:57:31,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:57:31,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:57:31,739 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) [2022-02-18 16:57:31,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-18 16:57:31,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 16:57:31,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:57:31,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 16:57:31,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:57:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:57:32,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:57:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:57:34,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292230266] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:57:34,087 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:57:34,087 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-02-18 16:57:34,087 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923802150] [2022-02-18 16:57:34,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:57:34,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-18 16:57:34,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:57:34,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-18 16:57:34,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1796, Unknown=0, NotChecked=0, Total=2162 [2022-02-18 16:57:34,088 INFO L87 Difference]: Start difference. First operand 4932 states and 16297 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:57:49,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:57:49,695 INFO L93 Difference]: Finished difference Result 16468 states and 52786 transitions. [2022-02-18 16:57:49,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-02-18 16:57:49,696 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:57:49,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:57:49,728 INFO L225 Difference]: With dead ends: 16468 [2022-02-18 16:57:49,728 INFO L226 Difference]: Without dead ends: 16303 [2022-02-18 16:57:49,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14557 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=7548, Invalid=32652, Unknown=0, NotChecked=0, Total=40200 [2022-02-18 16:57:49,730 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 764 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 4307 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 4769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 4307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-18 16:57:49,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 510 Invalid, 4769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 4307 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-18 16:57:49,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16303 states. [2022-02-18 16:57:49,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16303 to 6713. [2022-02-18 16:57:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6713 states, 6712 states have (on average 3.362485101311085) internal successors, (22569), 6712 states have internal predecessors, (22569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:57:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6713 states to 6713 states and 22569 transitions. [2022-02-18 16:57:49,939 INFO L78 Accepts]: Start accepts. Automaton has 6713 states and 22569 transitions. Word has length 34 [2022-02-18 16:57:49,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:57:49,940 INFO L470 AbstractCegarLoop]: Abstraction has 6713 states and 22569 transitions. [2022-02-18 16:57:49,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:57:49,940 INFO L276 IsEmpty]: Start isEmpty. Operand 6713 states and 22569 transitions. [2022-02-18 16:57:49,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:57:49,990 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:57:49,990 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:57:50,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-18 16:57:50,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:57:50,191 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:57:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:57:50,192 INFO L85 PathProgramCache]: Analyzing trace with hash 342899377, now seen corresponding path program 16 times [2022-02-18 16:57:50,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:57:50,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287435571] [2022-02-18 16:57:50,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:57:50,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:57:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:57:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:57:50,503 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:57:50,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287435571] [2022-02-18 16:57:50,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287435571] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:57:50,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655869589] [2022-02-18 16:57:50,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 16:57:50,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:57:50,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:57:50,504 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) [2022-02-18 16:57:50,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-18 16:57:50,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 16:57:50,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:57:50,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-18 16:57:50,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:57:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:57:51,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:57:54,313 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:57:54,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655869589] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:57:54,314 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:57:54,314 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-18 16:57:54,314 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470911819] [2022-02-18 16:57:54,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:57:54,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-18 16:57:54,314 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:57:54,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-18 16:57:54,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=1809, Unknown=0, NotChecked=0, Total=2162 [2022-02-18 16:57:54,315 INFO L87 Difference]: Start difference. First operand 6713 states and 22569 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:58:00,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:58:00,557 INFO L93 Difference]: Finished difference Result 12518 states and 40141 transitions. [2022-02-18 16:58:00,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-18 16:58:00,558 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:58:00,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:58:00,589 INFO L225 Difference]: With dead ends: 12518 [2022-02-18 16:58:00,589 INFO L226 Difference]: Without dead ends: 12273 [2022-02-18 16:58:00,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2643 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1649, Invalid=7471, Unknown=0, NotChecked=0, Total=9120 [2022-02-18 16:58:00,590 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 560 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 2666 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-18 16:58:00,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 451 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2666 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-18 16:58:00,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12273 states. [2022-02-18 16:58:00,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12273 to 6834. [2022-02-18 16:58:00,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6834 states, 6833 states have (on average 3.3647007171081516) internal successors, (22991), 6833 states have internal predecessors, (22991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:58:00,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6834 states to 6834 states and 22991 transitions. [2022-02-18 16:58:00,808 INFO L78 Accepts]: Start accepts. Automaton has 6834 states and 22991 transitions. Word has length 34 [2022-02-18 16:58:00,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:58:00,808 INFO L470 AbstractCegarLoop]: Abstraction has 6834 states and 22991 transitions. [2022-02-18 16:58:00,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:58:00,808 INFO L276 IsEmpty]: Start isEmpty. Operand 6834 states and 22991 transitions. [2022-02-18 16:58:00,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:58:00,855 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:58:00,855 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:58:00,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-18 16:58:01,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:58:01,075 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:58:01,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:58:01,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1264601517, now seen corresponding path program 17 times [2022-02-18 16:58:01,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:58:01,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102081730] [2022-02-18 16:58:01,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:58:01,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:58:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:58:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:58:01,353 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:58:01,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102081730] [2022-02-18 16:58:01,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102081730] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:58:01,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752570272] [2022-02-18 16:58:01,353 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 16:58:01,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:58:01,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:58:01,354 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) [2022-02-18 16:58:01,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-18 16:58:01,386 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-18 16:58:01,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:58:01,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-18 16:58:01,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:58:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:58:02,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:58:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:58:05,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752570272] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:58:05,153 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:58:05,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-18 16:58:05,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697808794] [2022-02-18 16:58:05,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:58:05,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-18 16:58:05,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:58:05,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-18 16:58:05,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1790, Unknown=0, NotChecked=0, Total=2162 [2022-02-18 16:58:05,154 INFO L87 Difference]: Start difference. First operand 6834 states and 22991 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:58:12,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:58:12,951 INFO L93 Difference]: Finished difference Result 14485 states and 46677 transitions. [2022-02-18 16:58:12,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-18 16:58:12,952 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:58:12,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:58:12,984 INFO L225 Difference]: With dead ends: 14485 [2022-02-18 16:58:12,984 INFO L226 Difference]: Without dead ends: 14245 [2022-02-18 16:58:12,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3774 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=2257, Invalid=9733, Unknown=0, NotChecked=0, Total=11990 [2022-02-18 16:58:12,986 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 602 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-18 16:58:12,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 394 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-18 16:58:13,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14245 states. [2022-02-18 16:58:13,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14245 to 6800. [2022-02-18 16:58:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6800 states, 6799 states have (on average 3.3582879835269894) internal successors, (22833), 6799 states have internal predecessors, (22833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:58:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6800 states to 6800 states and 22833 transitions. [2022-02-18 16:58:13,251 INFO L78 Accepts]: Start accepts. Automaton has 6800 states and 22833 transitions. Word has length 34 [2022-02-18 16:58:13,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:58:13,251 INFO L470 AbstractCegarLoop]: Abstraction has 6800 states and 22833 transitions. [2022-02-18 16:58:13,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:58:13,251 INFO L276 IsEmpty]: Start isEmpty. Operand 6800 states and 22833 transitions. [2022-02-18 16:58:13,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:58:13,268 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:58:13,268 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:58:13,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-18 16:58:13,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:58:13,491 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:58:13,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:58:13,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1194491481, now seen corresponding path program 18 times [2022-02-18 16:58:13,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:58:13,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753645243] [2022-02-18 16:58:13,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:58:13,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:58:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:58:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:58:13,767 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:58:13,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753645243] [2022-02-18 16:58:13,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753645243] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:58:13,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519135665] [2022-02-18 16:58:13,768 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 16:58:13,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:58:13,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:58:13,769 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) [2022-02-18 16:58:13,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-18 16:58:13,797 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-18 16:58:13,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:58:13,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-18 16:58:13,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:58:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:58:14,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:58:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:58:17,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519135665] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:58:17,623 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:58:17,623 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-02-18 16:58:17,623 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464396989] [2022-02-18 16:58:17,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:58:17,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-18 16:58:17,623 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:58:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-18 16:58:17,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1630, Unknown=0, NotChecked=0, Total=1980 [2022-02-18 16:58:17,624 INFO L87 Difference]: Start difference. First operand 6800 states and 22833 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:58:24,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:58:24,831 INFO L93 Difference]: Finished difference Result 11835 states and 38385 transitions. [2022-02-18 16:58:24,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-18 16:58:24,831 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:58:24,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:58:24,857 INFO L225 Difference]: With dead ends: 11835 [2022-02-18 16:58:24,857 INFO L226 Difference]: Without dead ends: 11595 [2022-02-18 16:58:24,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2636 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1743, Invalid=7569, Unknown=0, NotChecked=0, Total=9312 [2022-02-18 16:58:24,859 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 544 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-18 16:58:24,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 246 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-18 16:58:24,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11595 states. [2022-02-18 16:58:25,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11595 to 6779. [2022-02-18 16:58:25,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6779 states, 6778 states have (on average 3.357627618766598) internal successors, (22758), 6778 states have internal predecessors, (22758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:58:25,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6779 states to 6779 states and 22758 transitions. [2022-02-18 16:58:25,110 INFO L78 Accepts]: Start accepts. Automaton has 6779 states and 22758 transitions. Word has length 34 [2022-02-18 16:58:25,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:58:25,110 INFO L470 AbstractCegarLoop]: Abstraction has 6779 states and 22758 transitions. [2022-02-18 16:58:25,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:58:25,110 INFO L276 IsEmpty]: Start isEmpty. Operand 6779 states and 22758 transitions. [2022-02-18 16:58:25,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:58:25,123 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:58:25,123 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:58:25,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-18 16:58:25,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:58:25,326 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:58:25,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:58:25,326 INFO L85 PathProgramCache]: Analyzing trace with hash 188911329, now seen corresponding path program 19 times [2022-02-18 16:58:25,326 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:58:25,326 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989257408] [2022-02-18 16:58:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:58:25,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:58:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:58:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:58:25,609 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:58:25,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989257408] [2022-02-18 16:58:25,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989257408] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:58:25,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486275900] [2022-02-18 16:58:25,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 16:58:25,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:58:25,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:58:25,611 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) [2022-02-18 16:58:25,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-18 16:58:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:58:25,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-18 16:58:25,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:58:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:58:26,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:58:29,602 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:58:29,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486275900] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:58:29,602 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:58:29,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-18 16:58:29,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428136783] [2022-02-18 16:58:29,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:58:29,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-18 16:58:29,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:58:29,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-18 16:58:29,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1800, Unknown=0, NotChecked=0, Total=2162 [2022-02-18 16:58:29,603 INFO L87 Difference]: Start difference. First operand 6779 states and 22758 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:58:35,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:58:35,913 INFO L93 Difference]: Finished difference Result 11575 states and 37220 transitions. [2022-02-18 16:58:35,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-18 16:58:35,914 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:58:35,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:58:35,938 INFO L225 Difference]: With dead ends: 11575 [2022-02-18 16:58:35,938 INFO L226 Difference]: Without dead ends: 11436 [2022-02-18 16:58:35,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2814 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1849, Invalid=7463, Unknown=0, NotChecked=0, Total=9312 [2022-02-18 16:58:35,940 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 767 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-18 16:58:35,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 435 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-18 16:58:35,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11436 states. [2022-02-18 16:58:36,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11436 to 6931. [2022-02-18 16:58:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6931 states, 6930 states have (on average 3.3593073593073592) internal successors, (23280), 6930 states have internal predecessors, (23280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:58:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6931 states to 6931 states and 23280 transitions. [2022-02-18 16:58:36,115 INFO L78 Accepts]: Start accepts. Automaton has 6931 states and 23280 transitions. Word has length 34 [2022-02-18 16:58:36,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:58:36,115 INFO L470 AbstractCegarLoop]: Abstraction has 6931 states and 23280 transitions. [2022-02-18 16:58:36,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:58:36,115 INFO L276 IsEmpty]: Start isEmpty. Operand 6931 states and 23280 transitions. [2022-02-18 16:58:36,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:58:36,128 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:58:36,128 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:58:36,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-02-18 16:58:36,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:58:36,329 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:58:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:58:36,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1337834849, now seen corresponding path program 20 times [2022-02-18 16:58:36,329 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:58:36,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445658355] [2022-02-18 16:58:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:58:36,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:58:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:58:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:58:36,632 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:58:36,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445658355] [2022-02-18 16:58:36,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445658355] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:58:36,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341943144] [2022-02-18 16:58:36,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 16:58:36,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:58:36,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:58:36,633 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) [2022-02-18 16:58:36,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-18 16:58:36,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 16:58:36,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:58:36,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-18 16:58:36,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:58:37,519 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:58:37,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:58:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:58:40,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341943144] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:58:40,608 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:58:40,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-02-18 16:58:40,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243289605] [2022-02-18 16:58:40,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:58:40,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-18 16:58:40,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:58:40,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-18 16:58:40,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1618, Unknown=0, NotChecked=0, Total=1980 [2022-02-18 16:58:40,609 INFO L87 Difference]: Start difference. First operand 6931 states and 23280 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:58:49,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:58:49,058 INFO L93 Difference]: Finished difference Result 13668 states and 44628 transitions. [2022-02-18 16:58:49,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-18 16:58:49,058 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:58:49,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:58:49,092 INFO L225 Difference]: With dead ends: 13668 [2022-02-18 16:58:49,092 INFO L226 Difference]: Without dead ends: 13441 [2022-02-18 16:58:49,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4700 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=2406, Invalid=11636, Unknown=0, NotChecked=0, Total=14042 [2022-02-18 16:58:49,094 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 735 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-18 16:58:49,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 368 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-18 16:58:49,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13441 states. [2022-02-18 16:58:49,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13441 to 6968. [2022-02-18 16:58:49,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6968 states, 6967 states have (on average 3.3585474379216307) internal successors, (23399), 6967 states have internal predecessors, (23399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:58:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6968 states to 6968 states and 23399 transitions. [2022-02-18 16:58:49,319 INFO L78 Accepts]: Start accepts. Automaton has 6968 states and 23399 transitions. Word has length 34 [2022-02-18 16:58:49,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:58:49,320 INFO L470 AbstractCegarLoop]: Abstraction has 6968 states and 23399 transitions. [2022-02-18 16:58:49,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:58:49,320 INFO L276 IsEmpty]: Start isEmpty. Operand 6968 states and 23399 transitions. [2022-02-18 16:58:49,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:58:49,331 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:58:49,331 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:58:49,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-18 16:58:49,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:58:49,532 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:58:49,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:58:49,533 INFO L85 PathProgramCache]: Analyzing trace with hash -982878999, now seen corresponding path program 21 times [2022-02-18 16:58:49,533 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:58:49,533 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683970218] [2022-02-18 16:58:49,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:58:49,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:58:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:58:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:58:49,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:58:49,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683970218] [2022-02-18 16:58:49,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683970218] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:58:49,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176144642] [2022-02-18 16:58:49,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 16:58:49,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:58:49,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:58:49,842 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) [2022-02-18 16:58:49,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-18 16:58:49,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 16:58:49,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:58:49,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 16:58:49,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:58:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:58:50,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:58:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:58:52,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176144642] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:58:52,119 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:58:52,119 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-02-18 16:58:52,119 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50466129] [2022-02-18 16:58:52,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:58:52,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-18 16:58:52,120 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:58:52,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-18 16:58:52,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1818, Unknown=0, NotChecked=0, Total=2162 [2022-02-18 16:58:52,120 INFO L87 Difference]: Start difference. First operand 6968 states and 23399 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:59:09,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:59:09,848 INFO L93 Difference]: Finished difference Result 20771 states and 67025 transitions. [2022-02-18 16:59:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-02-18 16:59:09,848 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:59:09,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:59:09,895 INFO L225 Difference]: With dead ends: 20771 [2022-02-18 16:59:09,895 INFO L226 Difference]: Without dead ends: 20597 [2022-02-18 16:59:09,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17435 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=8467, Invalid=37543, Unknown=0, NotChecked=0, Total=46010 [2022-02-18 16:59:09,897 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 916 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 4447 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 4979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 4447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-18 16:59:09,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 589 Invalid, 4979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 4447 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-18 16:59:09,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20597 states. [2022-02-18 16:59:10,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20597 to 8044. [2022-02-18 16:59:10,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8044 states, 8043 states have (on average 3.3851796593310954) internal successors, (27227), 8043 states have internal predecessors, (27227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:59:10,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8044 states to 8044 states and 27227 transitions. [2022-02-18 16:59:10,178 INFO L78 Accepts]: Start accepts. Automaton has 8044 states and 27227 transitions. Word has length 34 [2022-02-18 16:59:10,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:59:10,178 INFO L470 AbstractCegarLoop]: Abstraction has 8044 states and 27227 transitions. [2022-02-18 16:59:10,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:59:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 8044 states and 27227 transitions. [2022-02-18 16:59:10,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:59:10,191 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:59:10,191 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:59:10,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-02-18 16:59:10,392 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,SelfDestructingSolverStorable23 [2022-02-18 16:59:10,392 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:59:10,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:59:10,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1158287809, now seen corresponding path program 22 times [2022-02-18 16:59:10,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:59:10,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277073488] [2022-02-18 16:59:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:59:10,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:59:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:59:10,651 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:59:10,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:59:10,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277073488] [2022-02-18 16:59:10,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277073488] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:59:10,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644735369] [2022-02-18 16:59:10,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 16:59:10,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:59:10,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:59:10,654 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) [2022-02-18 16:59:10,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-18 16:59:10,677 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 16:59:10,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:59:10,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-18 16:59:10,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:59:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:59:11,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:59:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:59:14,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644735369] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:59:14,263 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:59:14,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-18 16:59:14,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012868696] [2022-02-18 16:59:14,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:59:14,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-18 16:59:14,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:59:14,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-18 16:59:14,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1836, Unknown=0, NotChecked=0, Total=2162 [2022-02-18 16:59:14,265 INFO L87 Difference]: Start difference. First operand 8044 states and 27227 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:59:24,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:59:24,328 INFO L93 Difference]: Finished difference Result 17291 states and 55744 transitions. [2022-02-18 16:59:24,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-18 16:59:24,328 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:59:24,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:59:24,378 INFO L225 Difference]: With dead ends: 17291 [2022-02-18 16:59:24,379 INFO L226 Difference]: Without dead ends: 17083 [2022-02-18 16:59:24,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5521 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=2857, Invalid=13913, Unknown=0, NotChecked=0, Total=16770 [2022-02-18 16:59:24,380 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 664 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-18 16:59:24,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 422 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 2694 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-18 16:59:24,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17083 states. [2022-02-18 16:59:24,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17083 to 8543. [2022-02-18 16:59:24,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8543 states, 8542 states have (on average 3.403418403184266) internal successors, (29072), 8542 states have internal predecessors, (29072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:59:24,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8543 states to 8543 states and 29072 transitions. [2022-02-18 16:59:24,614 INFO L78 Accepts]: Start accepts. Automaton has 8543 states and 29072 transitions. Word has length 34 [2022-02-18 16:59:24,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:59:24,614 INFO L470 AbstractCegarLoop]: Abstraction has 8543 states and 29072 transitions. [2022-02-18 16:59:24,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:59:24,614 INFO L276 IsEmpty]: Start isEmpty. Operand 8543 states and 29072 transitions. [2022-02-18 16:59:24,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:59:24,627 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:59:24,627 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:59:24,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-18 16:59:24,827 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,SelfDestructingSolverStorable24 [2022-02-18 16:59:24,828 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:59:24,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:59:24,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2079989949, now seen corresponding path program 23 times [2022-02-18 16:59:24,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:59:24,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232525237] [2022-02-18 16:59:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:59:24,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:59:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:59:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:59:25,138 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:59:25,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232525237] [2022-02-18 16:59:25,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232525237] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:59:25,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792828666] [2022-02-18 16:59:25,138 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 16:59:25,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:59:25,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:59:25,140 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) [2022-02-18 16:59:25,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-18 16:59:25,167 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-18 16:59:25,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:59:25,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-18 16:59:25,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:59:26,043 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:59:26,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:59:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:59:28,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792828666] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:59:28,695 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:59:28,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-18 16:59:28,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829271309] [2022-02-18 16:59:28,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:59:28,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-18 16:59:28,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:59:28,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-18 16:59:28,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2022-02-18 16:59:28,697 INFO L87 Difference]: Start difference. First operand 8543 states and 29072 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:59:39,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:59:39,245 INFO L93 Difference]: Finished difference Result 18582 states and 60299 transitions. [2022-02-18 16:59:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-02-18 16:59:39,245 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:59:39,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:59:39,301 INFO L225 Difference]: With dead ends: 18582 [2022-02-18 16:59:39,302 INFO L226 Difference]: Without dead ends: 18404 [2022-02-18 16:59:39,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6402 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=3342, Invalid=15290, Unknown=0, NotChecked=0, Total=18632 [2022-02-18 16:59:39,303 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 689 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-18 16:59:39,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 360 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-18 16:59:39,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18404 states. [2022-02-18 16:59:39,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18404 to 8453. [2022-02-18 16:59:39,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8453 states, 8452 states have (on average 3.3917415996213913) internal successors, (28667), 8452 states have internal predecessors, (28667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:59:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8453 states to 8453 states and 28667 transitions. [2022-02-18 16:59:39,613 INFO L78 Accepts]: Start accepts. Automaton has 8453 states and 28667 transitions. Word has length 34 [2022-02-18 16:59:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:59:39,613 INFO L470 AbstractCegarLoop]: Abstraction has 8453 states and 28667 transitions. [2022-02-18 16:59:39,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:59:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 8453 states and 28667 transitions. [2022-02-18 16:59:39,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:59:39,627 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:59:39,627 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:59:39,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-18 16:59:39,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-02-18 16:59:39,828 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:59:39,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:59:39,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2009879913, now seen corresponding path program 24 times [2022-02-18 16:59:39,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:59:39,829 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294046783] [2022-02-18 16:59:39,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:59:39,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:59:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:59:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:59:40,098 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:59:40,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294046783] [2022-02-18 16:59:40,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294046783] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:59:40,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224744510] [2022-02-18 16:59:40,098 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 16:59:40,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:59:40,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:59:40,099 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) [2022-02-18 16:59:40,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-18 16:59:40,123 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-18 16:59:40,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 16:59:40,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-18 16:59:40,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:59:40,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:59:40,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:59:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:59:43,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224744510] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:59:43,614 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:59:43,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-02-18 16:59:43,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755127734] [2022-02-18 16:59:43,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:59:43,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-18 16:59:43,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:59:43,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-18 16:59:43,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1656, Unknown=0, NotChecked=0, Total=1980 [2022-02-18 16:59:43,615 INFO L87 Difference]: Start difference. First operand 8453 states and 28667 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:59:50,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 16:59:50,614 INFO L93 Difference]: Finished difference Result 15036 states and 49177 transitions. [2022-02-18 16:59:50,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-18 16:59:50,614 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 16:59:50,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 16:59:50,644 INFO L225 Difference]: With dead ends: 15036 [2022-02-18 16:59:50,644 INFO L226 Difference]: Without dead ends: 14858 [2022-02-18 16:59:50,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3092 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1795, Invalid=8305, Unknown=0, NotChecked=0, Total=10100 [2022-02-18 16:59:50,645 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 565 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 2152 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 2152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-18 16:59:50,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 249 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 2152 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-18 16:59:50,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14858 states. [2022-02-18 16:59:50,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14858 to 8423. [2022-02-18 16:59:50,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8423 states, 8422 states have (on average 3.392780812158632) internal successors, (28574), 8422 states have internal predecessors, (28574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:59:50,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8423 states to 8423 states and 28574 transitions. [2022-02-18 16:59:50,909 INFO L78 Accepts]: Start accepts. Automaton has 8423 states and 28574 transitions. Word has length 34 [2022-02-18 16:59:50,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 16:59:50,909 INFO L470 AbstractCegarLoop]: Abstraction has 8423 states and 28574 transitions. [2022-02-18 16:59:50,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 16:59:50,909 INFO L276 IsEmpty]: Start isEmpty. Operand 8423 states and 28574 transitions. [2022-02-18 16:59:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 16:59:50,924 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 16:59:50,924 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 16:59:50,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-18 16:59:51,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:59:51,135 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 16:59:51,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 16:59:51,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1818983591, now seen corresponding path program 25 times [2022-02-18 16:59:51,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 16:59:51,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156244931] [2022-02-18 16:59:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 16:59:51,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 16:59:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:59:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:59:51,456 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 16:59:51,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156244931] [2022-02-18 16:59:51,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156244931] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 16:59:51,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329768671] [2022-02-18 16:59:51,456 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 16:59:51,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 16:59:51,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 16:59:51,457 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) [2022-02-18 16:59:51,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-18 16:59:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 16:59:51,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 16:59:51,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 16:59:52,363 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:59:52,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 16:59:54,655 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 16:59:54,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329768671] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 16:59:54,655 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 16:59:54,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2022-02-18 16:59:54,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315285070] [2022-02-18 16:59:54,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 16:59:54,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-18 16:59:54,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 16:59:54,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-18 16:59:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2072, Unknown=0, NotChecked=0, Total=2450 [2022-02-18 16:59:54,656 INFO L87 Difference]: Start difference. First operand 8423 states and 28574 transitions. Second operand has 50 states, 50 states have (on average 1.82) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:00:07,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:00:07,130 INFO L93 Difference]: Finished difference Result 15516 states and 50211 transitions. [2022-02-18 17:00:07,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-02-18 17:00:07,131 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.82) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 17:00:07,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:00:07,167 INFO L225 Difference]: With dead ends: 15516 [2022-02-18 17:00:07,168 INFO L226 Difference]: Without dead ends: 15379 [2022-02-18 17:00:07,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9536 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=5079, Invalid=22311, Unknown=0, NotChecked=0, Total=27390 [2022-02-18 17:00:07,169 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 751 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 3687 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 4106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 3687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-18 17:00:07,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 545 Invalid, 4106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 3687 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-18 17:00:07,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15379 states. [2022-02-18 17:00:07,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15379 to 8748. [2022-02-18 17:00:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8748 states, 8747 states have (on average 3.406082085286384) internal successors, (29793), 8747 states have internal predecessors, (29793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:00:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8748 states to 8748 states and 29793 transitions. [2022-02-18 17:00:07,422 INFO L78 Accepts]: Start accepts. Automaton has 8748 states and 29793 transitions. Word has length 34 [2022-02-18 17:00:07,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:00:07,422 INFO L470 AbstractCegarLoop]: Abstraction has 8748 states and 29793 transitions. [2022-02-18 17:00:07,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.82) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:00:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand 8748 states and 29793 transitions. [2022-02-18 17:00:07,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 17:00:07,483 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:00:07,483 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:00:07,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-18 17:00:07,698 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,SelfDestructingSolverStorable27 [2022-02-18 17:00:07,699 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:00:07,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:00:07,699 INFO L85 PathProgramCache]: Analyzing trace with hash -472964259, now seen corresponding path program 26 times [2022-02-18 17:00:07,699 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:00:07,699 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179227086] [2022-02-18 17:00:07,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:00:07,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:00:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:00:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:00:08,016 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:00:08,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179227086] [2022-02-18 17:00:08,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179227086] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:00:08,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764483527] [2022-02-18 17:00:08,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 17:00:08,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:00:08,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:00:08,018 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) [2022-02-18 17:00:08,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-18 17:00:08,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 17:00:08,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 17:00:08,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 17:00:08,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:00:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:00:08,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:00:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:00:11,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764483527] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:00:11,108 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:00:11,109 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-02-18 17:00:11,109 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18600754] [2022-02-18 17:00:11,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:00:11,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-18 17:00:11,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:00:11,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-18 17:00:11,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2022-02-18 17:00:11,110 INFO L87 Difference]: Start difference. First operand 8748 states and 29793 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:00:29,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:00:29,266 INFO L93 Difference]: Finished difference Result 16682 states and 54028 transitions. [2022-02-18 17:00:29,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-02-18 17:00:29,267 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 17:00:29,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:00:29,306 INFO L225 Difference]: With dead ends: 16682 [2022-02-18 17:00:29,306 INFO L226 Difference]: Without dead ends: 16535 [2022-02-18 17:00:29,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18050 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=7846, Invalid=38594, Unknown=0, NotChecked=0, Total=46440 [2022-02-18 17:00:29,309 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 921 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 5158 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 5689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 5158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-18 17:00:29,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 619 Invalid, 5689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 5158 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-18 17:00:29,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16535 states. [2022-02-18 17:00:29,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16535 to 8674. [2022-02-18 17:00:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8674 states, 8673 states have (on average 3.401937046004843) internal successors, (29505), 8673 states have internal predecessors, (29505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:00:29,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 29505 transitions. [2022-02-18 17:00:29,561 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 29505 transitions. Word has length 34 [2022-02-18 17:00:29,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:00:29,561 INFO L470 AbstractCegarLoop]: Abstraction has 8674 states and 29505 transitions. [2022-02-18 17:00:29,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:00:29,562 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 29505 transitions. [2022-02-18 17:00:29,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 17:00:29,577 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:00:29,577 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:00:29,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-18 17:00:29,778 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,SelfDestructingSolverStorable28 [2022-02-18 17:00:29,778 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:00:29,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:00:29,778 INFO L85 PathProgramCache]: Analyzing trace with hash 445215345, now seen corresponding path program 27 times [2022-02-18 17:00:29,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:00:29,778 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383654899] [2022-02-18 17:00:29,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:00:29,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:00:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:00:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:00:30,073 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:00:30,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383654899] [2022-02-18 17:00:30,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383654899] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:00:30,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899928142] [2022-02-18 17:00:30,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 17:00:30,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:00:30,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:00:30,075 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) [2022-02-18 17:00:30,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-18 17:00:30,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 17:00:30,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 17:00:30,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-18 17:00:30,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:00:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:00:30,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:00:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:00:34,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899928142] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:00:34,044 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:00:34,044 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-02-18 17:00:34,044 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937861666] [2022-02-18 17:00:34,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:00:34,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-18 17:00:34,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:00:34,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-18 17:00:34,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1651, Unknown=0, NotChecked=0, Total=1980 [2022-02-18 17:00:34,048 INFO L87 Difference]: Start difference. First operand 8674 states and 29505 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:00:47,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:00:47,552 INFO L93 Difference]: Finished difference Result 27617 states and 90885 transitions. [2022-02-18 17:00:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-02-18 17:00:47,553 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 17:00:47,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:00:47,614 INFO L225 Difference]: With dead ends: 27617 [2022-02-18 17:00:47,615 INFO L226 Difference]: Without dead ends: 27408 [2022-02-18 17:00:47,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8172 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=4436, Invalid=19744, Unknown=0, NotChecked=0, Total=24180 [2022-02-18 17:00:47,616 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 700 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 4378 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 4796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 4378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-18 17:00:47,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 582 Invalid, 4796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 4378 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-18 17:00:47,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27408 states. [2022-02-18 17:00:47,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27408 to 12080. [2022-02-18 17:00:47,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12080 states, 12079 states have (on average 3.4684990479344315) internal successors, (41896), 12079 states have internal predecessors, (41896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:00:48,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12080 states to 12080 states and 41896 transitions. [2022-02-18 17:00:48,015 INFO L78 Accepts]: Start accepts. Automaton has 12080 states and 41896 transitions. Word has length 34 [2022-02-18 17:00:48,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:00:48,016 INFO L470 AbstractCegarLoop]: Abstraction has 12080 states and 41896 transitions. [2022-02-18 17:00:48,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:00:48,016 INFO L276 IsEmpty]: Start isEmpty. Operand 12080 states and 41896 transitions. [2022-02-18 17:00:48,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 17:00:48,036 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:00:48,036 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:00:48,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-18 17:00:48,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:00:48,237 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:00:48,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:00:48,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1498004759, now seen corresponding path program 28 times [2022-02-18 17:00:48,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:00:48,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057836458] [2022-02-18 17:00:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:00:48,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:00:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:00:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:00:48,580 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:00:48,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057836458] [2022-02-18 17:00:48,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057836458] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:00:48,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203005083] [2022-02-18 17:00:48,581 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 17:00:48,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:00:48,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:00:48,582 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) [2022-02-18 17:00:48,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-18 17:00:48,607 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 17:00:48,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 17:00:48,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-18 17:00:48,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:00:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:00:49,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:00:52,421 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:00:52,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203005083] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:00:52,421 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:00:52,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-18 17:00:52,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355071552] [2022-02-18 17:00:52,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:00:52,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-18 17:00:52,422 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:00:52,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-18 17:00:52,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1797, Unknown=0, NotChecked=0, Total=2162 [2022-02-18 17:00:52,422 INFO L87 Difference]: Start difference. First operand 12080 states and 41896 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:01:00,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:01:00,424 INFO L93 Difference]: Finished difference Result 26957 states and 90433 transitions. [2022-02-18 17:01:00,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-18 17:01:00,424 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 17:01:00,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:01:00,496 INFO L225 Difference]: With dead ends: 26957 [2022-02-18 17:01:00,496 INFO L226 Difference]: Without dead ends: 26819 [2022-02-18 17:01:00,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4911 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=3170, Invalid=11592, Unknown=0, NotChecked=0, Total=14762 [2022-02-18 17:01:00,498 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 824 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 2862 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 2862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-18 17:01:00,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 340 Invalid, 3300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 2862 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-18 17:01:00,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26819 states. [2022-02-18 17:01:00,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26819 to 14045. [2022-02-18 17:01:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14045 states, 14044 states have (on average 3.498433494730846) internal successors, (49132), 14044 states have internal predecessors, (49132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:01:01,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14045 states to 14045 states and 49132 transitions. [2022-02-18 17:01:01,008 INFO L78 Accepts]: Start accepts. Automaton has 14045 states and 49132 transitions. Word has length 34 [2022-02-18 17:01:01,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:01:01,008 INFO L470 AbstractCegarLoop]: Abstraction has 14045 states and 49132 transitions. [2022-02-18 17:01:01,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:01:01,008 INFO L276 IsEmpty]: Start isEmpty. Operand 14045 states and 49132 transitions. [2022-02-18 17:01:01,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 17:01:01,033 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:01:01,033 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:01:01,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-18 17:01:01,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:01:01,234 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:01:01,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:01:01,235 INFO L85 PathProgramCache]: Analyzing trace with hash -870461771, now seen corresponding path program 29 times [2022-02-18 17:01:01,235 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:01:01,235 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297948529] [2022-02-18 17:01:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:01:01,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:01:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:01:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:01:01,497 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:01:01,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297948529] [2022-02-18 17:01:01,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297948529] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:01:01,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876096012] [2022-02-18 17:01:01,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 17:01:01,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:01:01,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:01:01,498 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) [2022-02-18 17:01:01,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-18 17:01:01,520 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-18 17:01:01,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 17:01:01,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-18 17:01:01,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:01:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:01:02,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:01:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:01:06,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876096012] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:01:06,156 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:01:06,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-18 17:01:06,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31802688] [2022-02-18 17:01:06,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:01:06,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-18 17:01:06,156 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:01:06,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-18 17:01:06,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1826, Unknown=0, NotChecked=0, Total=2162 [2022-02-18 17:01:06,157 INFO L87 Difference]: Start difference. First operand 14045 states and 49132 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:01:24,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:01:24,811 INFO L93 Difference]: Finished difference Result 27731 states and 91215 transitions. [2022-02-18 17:01:24,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-02-18 17:01:24,811 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 17:01:24,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:01:24,906 INFO L225 Difference]: With dead ends: 27731 [2022-02-18 17:01:24,906 INFO L226 Difference]: Without dead ends: 27518 [2022-02-18 17:01:24,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10790 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=5374, Invalid=24382, Unknown=0, NotChecked=0, Total=29756 [2022-02-18 17:01:24,908 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 792 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 3553 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 3553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-18 17:01:24,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 686 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 3553 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-18 17:01:24,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27518 states. [2022-02-18 17:01:25,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27518 to 15571. [2022-02-18 17:01:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15571 states, 15570 states have (on average 3.5063583815028903) internal successors, (54594), 15570 states have internal predecessors, (54594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:01:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15571 states to 15571 states and 54594 transitions. [2022-02-18 17:01:25,425 INFO L78 Accepts]: Start accepts. Automaton has 15571 states and 54594 transitions. Word has length 34 [2022-02-18 17:01:25,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:01:25,425 INFO L470 AbstractCegarLoop]: Abstraction has 15571 states and 54594 transitions. [2022-02-18 17:01:25,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:01:25,425 INFO L276 IsEmpty]: Start isEmpty. Operand 15571 states and 54594 transitions. [2022-02-18 17:01:25,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 17:01:25,452 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:01:25,452 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:01:25,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-18 17:01:25,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:01:25,653 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:01:25,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:01:25,654 INFO L85 PathProgramCache]: Analyzing trace with hash 278461749, now seen corresponding path program 30 times [2022-02-18 17:01:25,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:01:25,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506547670] [2022-02-18 17:01:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:01:25,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:01:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:01:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:01:25,965 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:01:25,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506547670] [2022-02-18 17:01:25,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506547670] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:01:25,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915014684] [2022-02-18 17:01:25,966 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 17:01:25,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:01:25,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:01:25,968 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) [2022-02-18 17:01:25,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-18 17:01:26,001 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-18 17:01:26,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 17:01:26,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-18 17:01:26,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:01:26,841 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:01:26,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:01:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:01:29,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915014684] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:01:29,939 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:01:29,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-02-18 17:01:29,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169960931] [2022-02-18 17:01:29,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:01:29,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-18 17:01:29,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:01:29,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-18 17:01:29,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1649, Unknown=0, NotChecked=0, Total=1980 [2022-02-18 17:01:29,940 INFO L87 Difference]: Start difference. First operand 15571 states and 54594 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:01:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:01:43,043 INFO L93 Difference]: Finished difference Result 28288 states and 95943 transitions. [2022-02-18 17:01:43,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-02-18 17:01:43,044 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 17:01:43,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:01:43,141 INFO L225 Difference]: With dead ends: 28288 [2022-02-18 17:01:43,141 INFO L226 Difference]: Without dead ends: 28097 [2022-02-18 17:01:43,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8540 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=4162, Invalid=20018, Unknown=0, NotChecked=0, Total=24180 [2022-02-18 17:01:43,143 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 722 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 4245 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 4611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 4245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-18 17:01:43,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 413 Invalid, 4611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 4245 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-18 17:01:43,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28097 states. [2022-02-18 17:01:43,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28097 to 15481. [2022-02-18 17:01:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15481 states, 15480 states have (on average 3.5050387596899224) internal successors, (54258), 15480 states have internal predecessors, (54258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:01:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15481 states to 15481 states and 54258 transitions. [2022-02-18 17:01:43,665 INFO L78 Accepts]: Start accepts. Automaton has 15481 states and 54258 transitions. Word has length 34 [2022-02-18 17:01:43,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:01:43,665 INFO L470 AbstractCegarLoop]: Abstraction has 15481 states and 54258 transitions. [2022-02-18 17:01:43,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:01:43,666 INFO L276 IsEmpty]: Start isEmpty. Operand 15481 states and 54258 transitions. [2022-02-18 17:01:43,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 17:01:43,692 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:01:43,692 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:01:43,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-18 17:01:43,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:01:43,893 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:01:43,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:01:43,894 INFO L85 PathProgramCache]: Analyzing trace with hash 726875713, now seen corresponding path program 31 times [2022-02-18 17:01:43,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:01:43,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458503242] [2022-02-18 17:01:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:01:43,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:01:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:01:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:01:44,212 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:01:44,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458503242] [2022-02-18 17:01:44,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458503242] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:01:44,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836925032] [2022-02-18 17:01:44,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 17:01:44,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:01:44,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:01:44,215 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) [2022-02-18 17:01:44,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-18 17:01:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:01:44,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-18 17:01:44,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:01:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:01:45,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:01:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:01:48,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836925032] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:01:48,117 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:01:48,117 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-18 17:01:48,117 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635249382] [2022-02-18 17:01:48,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:01:48,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-18 17:01:48,118 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:01:48,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-18 17:01:48,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2022-02-18 17:01:48,118 INFO L87 Difference]: Start difference. First operand 15481 states and 54258 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:01:57,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:01:57,075 INFO L93 Difference]: Finished difference Result 29297 states and 98478 transitions. [2022-02-18 17:01:57,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-02-18 17:01:57,075 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 17:01:57,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:01:57,157 INFO L225 Difference]: With dead ends: 29297 [2022-02-18 17:01:57,158 INFO L226 Difference]: Without dead ends: 29071 [2022-02-18 17:01:57,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6575 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=3924, Invalid=15258, Unknown=0, NotChecked=0, Total=19182 [2022-02-18 17:01:57,159 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 594 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 3363 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 3712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 3363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-18 17:01:57,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 430 Invalid, 3712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 3363 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-18 17:01:57,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29071 states. [2022-02-18 17:01:57,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29071 to 17955. [2022-02-18 17:01:57,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17955 states, 17954 states have (on average 3.5179904199621252) internal successors, (63162), 17954 states have internal predecessors, (63162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:01:57,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17955 states to 17955 states and 63162 transitions. [2022-02-18 17:01:57,786 INFO L78 Accepts]: Start accepts. Automaton has 17955 states and 63162 transitions. Word has length 34 [2022-02-18 17:01:57,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:01:57,786 INFO L470 AbstractCegarLoop]: Abstraction has 17955 states and 63162 transitions. [2022-02-18 17:01:57,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:01:57,786 INFO L276 IsEmpty]: Start isEmpty. Operand 17955 states and 63162 transitions. [2022-02-18 17:01:57,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-18 17:01:57,818 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:01:57,818 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:01:57,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-02-18 17:01:58,018 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,SelfDestructingSolverStorable33 [2022-02-18 17:01:58,018 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:01:58,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:01:58,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1648577853, now seen corresponding path program 32 times [2022-02-18 17:01:58,019 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:01:58,019 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740342918] [2022-02-18 17:01:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:01:58,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:01:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:01:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:01:58,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:01:58,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740342918] [2022-02-18 17:01:58,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740342918] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:01:58,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521158527] [2022-02-18 17:01:58,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 17:01:58,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:01:58,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:01:58,330 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) [2022-02-18 17:01:58,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-18 17:01:58,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 17:01:58,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 17:01:58,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-18 17:01:58,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:01:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:01:59,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:02:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:02:02,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521158527] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:02:02,161 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:02:02,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-02-18 17:02:02,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820626195] [2022-02-18 17:02:02,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:02:02,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-18 17:02:02,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:02:02,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-18 17:02:02,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1645, Unknown=0, NotChecked=0, Total=1980 [2022-02-18 17:02:02,163 INFO L87 Difference]: Start difference. First operand 17955 states and 63162 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:02:09,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:02:09,599 INFO L93 Difference]: Finished difference Result 29870 states and 101083 transitions. [2022-02-18 17:02:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-02-18 17:02:09,599 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2022-02-18 17:02:09,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:02:09,683 INFO L225 Difference]: With dead ends: 29870 [2022-02-18 17:02:09,683 INFO L226 Difference]: Without dead ends: 29732 [2022-02-18 17:02:09,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5259 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=3295, Invalid=12961, Unknown=0, NotChecked=0, Total=16256 [2022-02-18 17:02:09,684 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 455 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 3406 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 3688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 3406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-18 17:02:09,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 333 Invalid, 3688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 3406 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-18 17:02:09,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29732 states. [2022-02-18 17:02:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29732 to 18408. [2022-02-18 17:02:10,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18408 states, 18407 states have (on average 3.5227359156842506) internal successors, (64843), 18407 states have internal predecessors, (64843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:02:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18408 states to 18408 states and 64843 transitions. [2022-02-18 17:02:10,383 INFO L78 Accepts]: Start accepts. Automaton has 18408 states and 64843 transitions. Word has length 34 [2022-02-18 17:02:10,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:02:10,384 INFO L470 AbstractCegarLoop]: Abstraction has 18408 states and 64843 transitions. [2022-02-18 17:02:10,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:02:10,384 INFO L276 IsEmpty]: Start isEmpty. Operand 18408 states and 64843 transitions. [2022-02-18 17:02:10,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-18 17:02:10,535 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:02:10,535 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:02:10,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-18 17:02:10,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:02:10,736 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:02:10,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:02:10,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581361, now seen corresponding path program 33 times [2022-02-18 17:02:10,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:02:10,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88461848] [2022-02-18 17:02:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:02:10,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:02:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:02:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 17:02:11,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:02:11,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88461848] [2022-02-18 17:02:11,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88461848] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:02:11,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274766180] [2022-02-18 17:02:11,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 17:02:11,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:02:11,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:02:11,212 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) [2022-02-18 17:02:11,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-18 17:02:11,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-18 17:02:11,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 17:02:11,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-18 17:02:11,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:02:12,495 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:02:12,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:02:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:02:14,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274766180] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:02:14,721 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:02:14,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 18] total 49 [2022-02-18 17:02:14,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330529738] [2022-02-18 17:02:14,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:02:14,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-18 17:02:14,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:02:14,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-18 17:02:14,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=2038, Unknown=0, NotChecked=0, Total=2450 [2022-02-18 17:02:14,722 INFO L87 Difference]: Start difference. First operand 18408 states and 64843 transitions. Second operand has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:02:32,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:02:32,940 INFO L93 Difference]: Finished difference Result 39425 states and 133315 transitions. [2022-02-18 17:02:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-02-18 17:02:32,941 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-18 17:02:32,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:02:33,060 INFO L225 Difference]: With dead ends: 39425 [2022-02-18 17:02:33,060 INFO L226 Difference]: Without dead ends: 39171 [2022-02-18 17:02:33,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13482 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=5776, Invalid=30896, Unknown=0, NotChecked=0, Total=36672 [2022-02-18 17:02:33,062 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 928 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 4462 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 4989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 4462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-18 17:02:33,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 596 Invalid, 4989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 4462 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-18 17:02:33,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39171 states. [2022-02-18 17:02:33,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39171 to 20370. [2022-02-18 17:02:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20370 states, 20369 states have (on average 3.524424370366734) internal successors, (71789), 20369 states have internal predecessors, (71789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:02:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20370 states to 20370 states and 71789 transitions. [2022-02-18 17:02:33,925 INFO L78 Accepts]: Start accepts. Automaton has 20370 states and 71789 transitions. Word has length 36 [2022-02-18 17:02:33,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:02:33,925 INFO L470 AbstractCegarLoop]: Abstraction has 20370 states and 71789 transitions. [2022-02-18 17:02:33,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:02:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 20370 states and 71789 transitions. [2022-02-18 17:02:33,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-18 17:02:33,961 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:02:33,961 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:02:33,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-18 17:02:34,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:02:34,162 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:02:34,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:02:34,163 INFO L85 PathProgramCache]: Analyzing trace with hash 705856911, now seen corresponding path program 34 times [2022-02-18 17:02:34,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:02:34,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760363614] [2022-02-18 17:02:34,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:02:34,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:02:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:02:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 17:02:34,553 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:02:34,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760363614] [2022-02-18 17:02:34,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760363614] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:02:34,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891937614] [2022-02-18 17:02:34,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 17:02:34,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:02:34,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:02:34,555 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) [2022-02-18 17:02:34,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-18 17:02:34,584 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 17:02:34,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 17:02:34,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-18 17:02:34,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:02:35,814 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:02:35,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:02:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:02:40,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891937614] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:02:40,020 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:02:40,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 51 [2022-02-18 17:02:40,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11475700] [2022-02-18 17:02:40,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:02:40,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-18 17:02:40,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:02:40,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-18 17:02:40,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=2203, Unknown=0, NotChecked=0, Total=2652 [2022-02-18 17:02:40,021 INFO L87 Difference]: Start difference. First operand 20370 states and 71789 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:03:05,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:03:05,206 INFO L93 Difference]: Finished difference Result 37640 states and 127007 transitions. [2022-02-18 17:03:05,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-02-18 17:03:05,206 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-18 17:03:05,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:03:05,324 INFO L225 Difference]: With dead ends: 37640 [2022-02-18 17:03:05,324 INFO L226 Difference]: Without dead ends: 37431 [2022-02-18 17:03:05,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10801 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=5044, Invalid=24712, Unknown=0, NotChecked=0, Total=29756 [2022-02-18 17:03:05,325 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 749 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 3312 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 3679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 3312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-18 17:03:05,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 810 Invalid, 3679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 3312 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-18 17:03:05,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37431 states. [2022-02-18 17:03:05,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37431 to 22320. [2022-02-18 17:03:05,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22320 states, 22319 states have (on average 3.5096554505130158) internal successors, (78332), 22319 states have internal predecessors, (78332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:03:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22320 states to 22320 states and 78332 transitions. [2022-02-18 17:03:06,012 INFO L78 Accepts]: Start accepts. Automaton has 22320 states and 78332 transitions. Word has length 36 [2022-02-18 17:03:06,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:03:06,012 INFO L470 AbstractCegarLoop]: Abstraction has 22320 states and 78332 transitions. [2022-02-18 17:03:06,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:03:06,013 INFO L276 IsEmpty]: Start isEmpty. Operand 22320 states and 78332 transitions. [2022-02-18 17:03:06,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-18 17:03:06,057 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:03:06,057 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:03:06,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-18 17:03:06,257 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,SelfDestructingSolverStorable36 [2022-02-18 17:03:06,257 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:03:06,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:03:06,258 INFO L85 PathProgramCache]: Analyzing trace with hash -132070257, now seen corresponding path program 35 times [2022-02-18 17:03:06,258 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:03:06,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744447639] [2022-02-18 17:03:06,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:03:06,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:03:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:03:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 17:03:06,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:03:06,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744447639] [2022-02-18 17:03:06,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744447639] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:03:06,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549702356] [2022-02-18 17:03:06,615 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 17:03:06,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:03:06,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:03:06,616 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) [2022-02-18 17:03:06,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-18 17:03:06,648 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-18 17:03:06,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 17:03:06,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-18 17:03:06,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:03:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:03:07,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:03:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:03:10,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549702356] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:03:10,769 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:03:10,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 20] total 52 [2022-02-18 17:03:10,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051185536] [2022-02-18 17:03:10,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:03:10,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-18 17:03:10,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:03:10,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-18 17:03:10,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=2297, Unknown=0, NotChecked=0, Total=2756 [2022-02-18 17:03:10,770 INFO L87 Difference]: Start difference. First operand 22320 states and 78332 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:03:50,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:03:50,657 INFO L93 Difference]: Finished difference Result 36818 states and 123722 transitions. [2022-02-18 17:03:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-02-18 17:03:50,659 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-18 17:03:50,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:03:50,771 INFO L225 Difference]: With dead ends: 36818 [2022-02-18 17:03:50,771 INFO L226 Difference]: Without dead ends: 36383 [2022-02-18 17:03:50,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16703 ImplicationChecksByTransitivity, 38.9s TimeCoverageRelationStatistics Valid=7341, Invalid=37815, Unknown=0, NotChecked=0, Total=45156 [2022-02-18 17:03:50,773 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 1076 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 3984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-18 17:03:50,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 1033 Invalid, 3984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 3628 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-18 17:03:50,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36383 states. [2022-02-18 17:03:51,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36383 to 22991. [2022-02-18 17:03:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22991 states, 22990 states have (on average 3.5024358416702914) internal successors, (80521), 22990 states have internal predecessors, (80521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:03:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22991 states to 22991 states and 80521 transitions. [2022-02-18 17:03:51,463 INFO L78 Accepts]: Start accepts. Automaton has 22991 states and 80521 transitions. Word has length 36 [2022-02-18 17:03:51,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:03:51,464 INFO L470 AbstractCegarLoop]: Abstraction has 22991 states and 80521 transitions. [2022-02-18 17:03:51,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:03:51,464 INFO L276 IsEmpty]: Start isEmpty. Operand 22991 states and 80521 transitions. [2022-02-18 17:03:51,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-18 17:03:51,507 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:03:51,507 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:03:51,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-18 17:03:51,707 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,SelfDestructingSolverStorable37 [2022-02-18 17:03:51,708 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:03:51,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:03:51,709 INFO L85 PathProgramCache]: Analyzing trace with hash 165942351, now seen corresponding path program 36 times [2022-02-18 17:03:51,709 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:03:51,709 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899637632] [2022-02-18 17:03:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:03:51,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:03:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:03:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:03:52,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:03:52,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899637632] [2022-02-18 17:03:52,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899637632] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:03:52,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621016982] [2022-02-18 17:03:52,088 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 17:03:52,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:03:52,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:03:52,089 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) [2022-02-18 17:03:52,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-18 17:03:52,120 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 17:03:52,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 17:03:52,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-18 17:03:52,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:03:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:03:53,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:03:56,043 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:03:56,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621016982] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:03:56,043 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:03:56,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 48 [2022-02-18 17:03:56,044 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60171198] [2022-02-18 17:03:56,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:03:56,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-18 17:03:56,044 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:03:56,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-18 17:03:56,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1978, Unknown=0, NotChecked=0, Total=2352 [2022-02-18 17:03:56,045 INFO L87 Difference]: Start difference. First operand 22991 states and 80521 transitions. Second operand has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:04:15,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:04:15,801 INFO L93 Difference]: Finished difference Result 37235 states and 125952 transitions. [2022-02-18 17:04:15,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-02-18 17:04:15,802 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-18 17:04:15,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:04:15,913 INFO L225 Difference]: With dead ends: 37235 [2022-02-18 17:04:15,913 INFO L226 Difference]: Without dead ends: 36955 [2022-02-18 17:04:15,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10045 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=4219, Invalid=24851, Unknown=0, NotChecked=0, Total=29070 [2022-02-18 17:04:15,914 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 857 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 4666 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 5103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 4666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-18 17:04:15,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 579 Invalid, 5103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 4666 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-18 17:04:15,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36955 states. [2022-02-18 17:04:16,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36955 to 23455. [2022-02-18 17:04:16,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23455 states, 23454 states have (on average 3.4936471390807537) internal successors, (81940), 23454 states have internal predecessors, (81940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:04:16,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23455 states to 23455 states and 81940 transitions. [2022-02-18 17:04:16,733 INFO L78 Accepts]: Start accepts. Automaton has 23455 states and 81940 transitions. Word has length 36 [2022-02-18 17:04:16,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:04:16,733 INFO L470 AbstractCegarLoop]: Abstraction has 23455 states and 81940 transitions. [2022-02-18 17:04:16,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:04:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 23455 states and 81940 transitions. [2022-02-18 17:04:16,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-18 17:04:16,779 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:04:16,779 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:04:16,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-18 17:04:16,979 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,SelfDestructingSolverStorable38 [2022-02-18 17:04:16,979 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:04:16,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:04:16,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1442269323, now seen corresponding path program 37 times [2022-02-18 17:04:16,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:04:16,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256336885] [2022-02-18 17:04:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:04:16,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:04:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:04:17,268 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:04:17,268 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:04:17,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256336885] [2022-02-18 17:04:17,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256336885] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:04:17,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725552810] [2022-02-18 17:04:17,268 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 17:04:17,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:04:17,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:04:17,270 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) [2022-02-18 17:04:17,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-18 17:04:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:04:17,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-18 17:04:17,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:04:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:04:18,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:04:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:04:20,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725552810] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:04:20,909 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:04:20,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 20] total 52 [2022-02-18 17:04:20,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987006998] [2022-02-18 17:04:20,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:04:20,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-18 17:04:20,909 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:04:20,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-18 17:04:20,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=2327, Unknown=0, NotChecked=0, Total=2756 [2022-02-18 17:04:20,910 INFO L87 Difference]: Start difference. First operand 23455 states and 81940 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:04:58,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:04:58,240 INFO L93 Difference]: Finished difference Result 39539 states and 132003 transitions. [2022-02-18 17:04:58,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2022-02-18 17:04:58,241 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-18 17:04:58,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:04:58,360 INFO L225 Difference]: With dead ends: 39539 [2022-02-18 17:04:58,361 INFO L226 Difference]: Without dead ends: 39108 [2022-02-18 17:04:58,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21216 ImplicationChecksByTransitivity, 35.9s TimeCoverageRelationStatistics Valid=8717, Invalid=45805, Unknown=0, NotChecked=0, Total=54522 [2022-02-18 17:04:58,363 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1081 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 3971 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 4418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 3971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-18 17:04:58,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 1164 Invalid, 4418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 3971 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-18 17:04:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39108 states. [2022-02-18 17:04:59,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39108 to 23865. [2022-02-18 17:04:59,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23865 states, 23864 states have (on average 3.4881830372108618) internal successors, (83242), 23864 states have internal predecessors, (83242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:04:59,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23865 states to 23865 states and 83242 transitions. [2022-02-18 17:04:59,121 INFO L78 Accepts]: Start accepts. Automaton has 23865 states and 83242 transitions. Word has length 36 [2022-02-18 17:04:59,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:04:59,122 INFO L470 AbstractCegarLoop]: Abstraction has 23865 states and 83242 transitions. [2022-02-18 17:04:59,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:04:59,122 INFO L276 IsEmpty]: Start isEmpty. Operand 23865 states and 83242 transitions. [2022-02-18 17:04:59,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-18 17:04:59,168 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:04:59,168 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:04:59,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-02-18 17:04:59,368 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,SelfDestructingSolverStorable39 [2022-02-18 17:04:59,369 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:04:59,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:04:59,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1340971121, now seen corresponding path program 38 times [2022-02-18 17:04:59,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:04:59,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480341761] [2022-02-18 17:04:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:04:59,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:04:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:04:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:04:59,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:04:59,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480341761] [2022-02-18 17:04:59,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480341761] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:04:59,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760086072] [2022-02-18 17:04:59,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 17:04:59,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:04:59,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:04:59,765 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) [2022-02-18 17:04:59,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-18 17:04:59,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 17:04:59,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 17:04:59,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-18 17:04:59,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:05:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:05:01,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:05:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:05:02,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760086072] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:05:02,646 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:05:02,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 19] total 51 [2022-02-18 17:05:02,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088033326] [2022-02-18 17:05:02,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:05:02,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-18 17:05:02,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:05:02,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-18 17:05:02,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2191, Unknown=0, NotChecked=0, Total=2652 [2022-02-18 17:05:02,647 INFO L87 Difference]: Start difference. First operand 23865 states and 83242 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:05:24,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:05:24,088 INFO L93 Difference]: Finished difference Result 46254 states and 153652 transitions. [2022-02-18 17:05:24,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2022-02-18 17:05:24,090 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-18 17:05:24,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:05:24,223 INFO L225 Difference]: With dead ends: 46254 [2022-02-18 17:05:24,223 INFO L226 Difference]: Without dead ends: 45963 [2022-02-18 17:05:24,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30452 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=11343, Invalid=62913, Unknown=0, NotChecked=0, Total=74256 [2022-02-18 17:05:24,226 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 1310 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 5050 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 5766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 5050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-18 17:05:24,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1310 Valid, 792 Invalid, 5766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [716 Valid, 5050 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-18 17:05:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45963 states. [2022-02-18 17:05:25,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45963 to 24356. [2022-02-18 17:05:25,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24356 states, 24355 states have (on average 3.4868815438308354) internal successors, (84923), 24355 states have internal predecessors, (84923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:05:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24356 states to 24356 states and 84923 transitions. [2022-02-18 17:05:25,199 INFO L78 Accepts]: Start accepts. Automaton has 24356 states and 84923 transitions. Word has length 36 [2022-02-18 17:05:25,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:05:25,199 INFO L470 AbstractCegarLoop]: Abstraction has 24356 states and 84923 transitions. [2022-02-18 17:05:25,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:05:25,200 INFO L276 IsEmpty]: Start isEmpty. Operand 24356 states and 84923 transitions. [2022-02-18 17:05:25,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-18 17:05:25,241 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:05:25,241 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:05:25,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-18 17:05:25,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:05:25,442 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:05:25,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:05:25,443 INFO L85 PathProgramCache]: Analyzing trace with hash -883763825, now seen corresponding path program 39 times [2022-02-18 17:05:25,443 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:05:25,443 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801278644] [2022-02-18 17:05:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:05:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:05:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:05:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:05:25,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:05:25,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801278644] [2022-02-18 17:05:25,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801278644] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:05:25,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458975698] [2022-02-18 17:05:25,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 17:05:25,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:05:25,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:05:25,864 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) [2022-02-18 17:05:25,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-18 17:05:25,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 17:05:25,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 17:05:25,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-18 17:05:25,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:05:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:05:26,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:05:27,902 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:05:27,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458975698] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:05:27,902 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:05:27,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-02-18 17:05:27,903 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994302717] [2022-02-18 17:05:27,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:05:27,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-18 17:05:27,903 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:05:27,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-18 17:05:27,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2228, Unknown=0, NotChecked=0, Total=2652 [2022-02-18 17:05:27,904 INFO L87 Difference]: Start difference. First operand 24356 states and 84923 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:05:45,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:05:45,255 INFO L93 Difference]: Finished difference Result 47727 states and 157820 transitions. [2022-02-18 17:05:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-02-18 17:05:45,255 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-18 17:05:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:05:45,399 INFO L225 Difference]: With dead ends: 47727 [2022-02-18 17:05:45,399 INFO L226 Difference]: Without dead ends: 47130 [2022-02-18 17:05:45,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22222 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=8220, Invalid=50102, Unknown=0, NotChecked=0, Total=58322 [2022-02-18 17:05:45,402 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1475 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 6996 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 7641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 6996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-02-18 17:05:45,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1475 Valid, 893 Invalid, 7641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 6996 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-02-18 17:05:45,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47130 states. [2022-02-18 17:05:46,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47130 to 24572. [2022-02-18 17:05:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24572 states, 24571 states have (on average 3.482560742338529) internal successors, (85570), 24571 states have internal predecessors, (85570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:05:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24572 states to 24572 states and 85570 transitions. [2022-02-18 17:05:46,266 INFO L78 Accepts]: Start accepts. Automaton has 24572 states and 85570 transitions. Word has length 36 [2022-02-18 17:05:46,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:05:46,266 INFO L470 AbstractCegarLoop]: Abstraction has 24572 states and 85570 transitions. [2022-02-18 17:05:46,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:05:46,266 INFO L276 IsEmpty]: Start isEmpty. Operand 24572 states and 85570 transitions. [2022-02-18 17:05:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-18 17:05:46,305 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:05:46,305 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:05:46,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-18 17:05:46,506 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,SelfDestructingSolverStorable41 [2022-02-18 17:05:46,506 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:05:46,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:05:46,507 INFO L85 PathProgramCache]: Analyzing trace with hash 231013519, now seen corresponding path program 40 times [2022-02-18 17:05:46,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:05:46,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795783650] [2022-02-18 17:05:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:05:46,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:05:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:05:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:05:46,994 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:05:46,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795783650] [2022-02-18 17:05:46,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795783650] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:05:46,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316366945] [2022-02-18 17:05:46,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 17:05:46,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:05:46,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:05:46,996 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) [2022-02-18 17:05:47,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-18 17:05:47,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 17:05:47,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 17:05:47,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-18 17:05:47,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:05:48,195 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:05:48,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:05:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:05:49,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316366945] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:05:49,482 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:05:49,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 54 [2022-02-18 17:05:49,483 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510537193] [2022-02-18 17:05:49,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:05:49,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-18 17:05:49,483 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:05:49,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-18 17:05:49,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=2513, Unknown=0, NotChecked=0, Total=2970 [2022-02-18 17:05:49,484 INFO L87 Difference]: Start difference. First operand 24572 states and 85570 transitions. Second operand has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:06:12,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:06:12,748 INFO L93 Difference]: Finished difference Result 51559 states and 166281 transitions. [2022-02-18 17:06:12,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2022-02-18 17:06:12,748 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-18 17:06:12,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:06:13,000 INFO L225 Difference]: With dead ends: 51559 [2022-02-18 17:06:13,000 INFO L226 Difference]: Without dead ends: 50974 [2022-02-18 17:06:13,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36935 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=13139, Invalid=73591, Unknown=0, NotChecked=0, Total=86730 [2022-02-18 17:06:13,003 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 1672 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 4645 mSolverCounterSat, 853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 5498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 853 IncrementalHoareTripleChecker+Valid, 4645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-18 17:06:13,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1672 Valid, 1087 Invalid, 5498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [853 Valid, 4645 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-18 17:06:13,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50974 states. [2022-02-18 17:06:13,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50974 to 25902. [2022-02-18 17:06:13,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25902 states, 25901 states have (on average 3.4722983668584226) internal successors, (89936), 25901 states have internal predecessors, (89936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:06:13,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25902 states to 25902 states and 89936 transitions. [2022-02-18 17:06:13,903 INFO L78 Accepts]: Start accepts. Automaton has 25902 states and 89936 transitions. Word has length 36 [2022-02-18 17:06:13,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:06:13,903 INFO L470 AbstractCegarLoop]: Abstraction has 25902 states and 89936 transitions. [2022-02-18 17:06:13,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:06:13,903 INFO L276 IsEmpty]: Start isEmpty. Operand 25902 states and 89936 transitions. [2022-02-18 17:06:13,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-18 17:06:13,957 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:06:13,957 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:06:13,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-02-18 17:06:14,158 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,SelfDestructingSolverStorable42 [2022-02-18 17:06:14,158 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:06:14,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:06:14,159 INFO L85 PathProgramCache]: Analyzing trace with hash 534588811, now seen corresponding path program 41 times [2022-02-18 17:06:14,159 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:06:14,159 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381327396] [2022-02-18 17:06:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:06:14,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:06:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:06:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:06:14,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:06:14,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381327396] [2022-02-18 17:06:14,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381327396] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:06:14,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306735349] [2022-02-18 17:06:14,828 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 17:06:14,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:06:14,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:06:14,829 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) [2022-02-18 17:06:14,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-18 17:06:14,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-18 17:06:14,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 17:06:14,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-18 17:06:14,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:06:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:06:15,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:06:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:06:17,075 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306735349] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:06:17,075 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:06:17,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 54 [2022-02-18 17:06:17,076 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524044604] [2022-02-18 17:06:17,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:06:17,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-18 17:06:17,076 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:06:17,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-18 17:06:17,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2512, Unknown=0, NotChecked=0, Total=2970 [2022-02-18 17:06:17,077 INFO L87 Difference]: Start difference. First operand 25902 states and 89936 transitions. Second operand has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:06:41,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:06:41,970 INFO L93 Difference]: Finished difference Result 53208 states and 171321 transitions. [2022-02-18 17:06:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 309 states. [2022-02-18 17:06:41,971 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-18 17:06:41,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:06:42,177 INFO L225 Difference]: With dead ends: 53208 [2022-02-18 17:06:42,177 INFO L226 Difference]: Without dead ends: 52586 [2022-02-18 17:06:42,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46434 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=16388, Invalid=90868, Unknown=0, NotChecked=0, Total=107256 [2022-02-18 17:06:42,182 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 1836 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 5701 mSolverCounterSat, 1025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 6726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1025 IncrementalHoareTripleChecker+Valid, 5701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-18 17:06:42,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1836 Valid, 1118 Invalid, 6726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1025 Valid, 5701 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-18 17:06:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52586 states. [2022-02-18 17:06:43,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52586 to 26033. [2022-02-18 17:06:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26033 states, 26032 states have (on average 3.4720728334357713) internal successors, (90385), 26032 states have internal predecessors, (90385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:06:43,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26033 states to 26033 states and 90385 transitions. [2022-02-18 17:06:43,415 INFO L78 Accepts]: Start accepts. Automaton has 26033 states and 90385 transitions. Word has length 36 [2022-02-18 17:06:43,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:06:43,415 INFO L470 AbstractCegarLoop]: Abstraction has 26033 states and 90385 transitions. [2022-02-18 17:06:43,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:06:43,415 INFO L276 IsEmpty]: Start isEmpty. Operand 26033 states and 90385 transitions. [2022-02-18 17:06:43,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-18 17:06:43,467 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:06:43,467 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:06:43,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-18 17:06:43,667 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,SelfDestructingSolverStorable43 [2022-02-18 17:06:43,667 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:06:43,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:06:43,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1576431985, now seen corresponding path program 42 times [2022-02-18 17:06:43,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:06:43,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38603098] [2022-02-18 17:06:43,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:06:43,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:06:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:06:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:06:43,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:06:43,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38603098] [2022-02-18 17:06:43,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38603098] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:06:43,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342356811] [2022-02-18 17:06:43,975 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 17:06:43,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:06:43,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:06:43,976 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) [2022-02-18 17:06:43,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-18 17:06:44,001 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-02-18 17:06:44,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 17:06:44,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-18 17:06:44,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:06:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:06:44,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:06:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:06:45,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342356811] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:06:45,946 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:06:45,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-02-18 17:06:45,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915897970] [2022-02-18 17:06:45,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:06:45,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-18 17:06:45,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:06:45,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-18 17:06:45,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=2184, Unknown=0, NotChecked=0, Total=2652 [2022-02-18 17:06:45,948 INFO L87 Difference]: Start difference. First operand 26033 states and 90385 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:07:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 17:07:06,171 INFO L93 Difference]: Finished difference Result 53222 states and 174091 transitions. [2022-02-18 17:07:06,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 274 states. [2022-02-18 17:07:06,172 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-02-18 17:07:06,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 17:07:06,394 INFO L225 Difference]: With dead ends: 53222 [2022-02-18 17:07:06,394 INFO L226 Difference]: Without dead ends: 52732 [2022-02-18 17:07:06,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34683 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=13109, Invalid=70701, Unknown=0, NotChecked=0, Total=83810 [2022-02-18 17:07:06,398 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 1961 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 6771 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 7704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 6771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-02-18 17:07:06,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1961 Valid, 1019 Invalid, 7704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 6771 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-02-18 17:07:06,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52732 states. [2022-02-18 17:07:07,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52732 to 25812. [2022-02-18 17:07:07,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25812 states, 25811 states have (on average 3.473247840068188) internal successors, (89648), 25811 states have internal predecessors, (89648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:07:07,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25812 states to 25812 states and 89648 transitions. [2022-02-18 17:07:07,351 INFO L78 Accepts]: Start accepts. Automaton has 25812 states and 89648 transitions. Word has length 36 [2022-02-18 17:07:07,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 17:07:07,351 INFO L470 AbstractCegarLoop]: Abstraction has 25812 states and 89648 transitions. [2022-02-18 17:07:07,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 17:07:07,351 INFO L276 IsEmpty]: Start isEmpty. Operand 25812 states and 89648 transitions. [2022-02-18 17:07:07,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-18 17:07:07,402 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 17:07:07,402 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 17:07:07,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-02-18 17:07:07,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:07:07,603 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-18 17:07:07,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 17:07:07,603 INFO L85 PathProgramCache]: Analyzing trace with hash 24674187, now seen corresponding path program 43 times [2022-02-18 17:07:07,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 17:07:07,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218660164] [2022-02-18 17:07:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 17:07:07,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 17:07:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:07:07,959 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:07:07,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 17:07:07,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218660164] [2022-02-18 17:07:07,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218660164] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 17:07:07,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169033101] [2022-02-18 17:07:07,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 17:07:07,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:07:07,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 17:07:07,960 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) [2022-02-18 17:07:07,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-18 17:07:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 17:07:07,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-18 17:07:07,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 17:07:09,416 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:07:09,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 17:07:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 17:07:12,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169033101] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 17:07:12,499 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 17:07:12,499 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2022-02-18 17:07:12,499 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943421301] [2022-02-18 17:07:12,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 17:07:12,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-18 17:07:12,499 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 17:07:12,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-18 17:07:12,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2333, Unknown=0, NotChecked=0, Total=2756 [2022-02-18 17:07:12,500 INFO L87 Difference]: Start difference. First operand 25812 states and 89648 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-02-18 17:07:13,754 WARN L244 SmtUtils]: Removed 11 from assertion stack [2022-02-18 17:07:13,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-18 17:07:13,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1213 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=510, Invalid=2796, Unknown=0, NotChecked=0, Total=3306 [2022-02-18 17:07:13,755 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 145 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-18 17:07:13,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 4 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-18 17:07:13,756 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-02-18 17:07:13,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-18 17:07:13,796 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 [2022-02-18 17:07:13,797 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-18 17:07:13,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 17:07:13,957 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (25812states) and FLOYD_HOARE automaton (currently 16 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 149 for 601ms.. [2022-02-18 17:07:13,958 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-18 17:07:13,958 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-18 17:07:13,959 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-02-18 17:07:13,961 INFO L732 BasicCegarLoop]: Path program histogram: [43, 1, 1, 1] [2022-02-18 17:07:13,964 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-18 17:07:13,964 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-18 17:07:13,966 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 05:07:13 BasicIcfg [2022-02-18 17:07:13,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-18 17:07:13,966 INFO L158 Benchmark]: Toolchain (without parser) took 706869.65ms. Allocated memory was 184.5MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 143.5MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 518.1MB. Max. memory is 8.0GB. [2022-02-18 17:07:13,966 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-18 17:07:13,966 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.92ms. Allocated memory is still 184.5MB. Free memory was 143.5MB in the beginning and 142.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-18 17:07:13,967 INFO L158 Benchmark]: Boogie Preprocessor took 20.51ms. Allocated memory is still 184.5MB. Free memory was 142.0MB in the beginning and 140.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-18 17:07:13,967 INFO L158 Benchmark]: RCFGBuilder took 231.48ms. Allocated memory is still 184.5MB. Free memory was 140.9MB in the beginning and 130.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-18 17:07:13,967 INFO L158 Benchmark]: TraceAbstraction took 706583.07ms. Allocated memory was 184.5MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 130.3MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 504.4MB. Max. memory is 8.0GB. [2022-02-18 17:07:13,967 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 0.13ms. Allocated memory is still 184.5MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.92ms. Allocated memory is still 184.5MB. Free memory was 143.5MB in the beginning and 142.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.51ms. Allocated memory is still 184.5MB. Free memory was 142.0MB in the beginning and 140.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 231.48ms. Allocated memory is still 184.5MB. Free memory was 140.9MB in the beginning and 130.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 706583.07ms. Allocated memory was 184.5MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 130.3MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 504.4MB. 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: 78]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (25812states) and FLOYD_HOARE automaton (currently 16 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 149 for 601ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (25812states) and FLOYD_HOARE automaton (currently 16 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 149 for 601ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (25812states) and FLOYD_HOARE automaton (currently 16 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 149 for 601ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (25812states) and FLOYD_HOARE automaton (currently 16 states, 53 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 149 for 601ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 47 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 706.5s, OverallIterations: 46, TraceHistogramMax: 4, PathProgramHistogramMax: 43, EmptinessCheckTime: 1.1s, AutomataDifference: 544.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34167 SdHoareTripleChecker+Valid, 75.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34167 mSDsluCounter, 22305 SdHoareTripleChecker+Invalid, 65.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29866 mSDsCounter, 17493 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 138072 IncrementalHoareTripleChecker+Invalid, 155565 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17493 mSolverCounterUnsat, 1101 mSDtfsCounter, 138072 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8342 GetRequests, 1639 SyntacticMatches, 104 SemanticMatches, 6598 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494860 ImplicationChecksByTransitivity, 498.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26033occurred in iteration=44, InterpolantAutomatonStates: 5878, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 16.4s AutomataMinimizationTime, 45 MinimizatonAttempts, 408538 StatesRemovedByMinimization, 43 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 133.3s InterpolantComputationTime, 2963 NumberOfCodeBlocks, 2963 NumberOfCodeBlocksAsserted, 171 NumberOfCheckSat, 4265 ConstructedInterpolants, 0 QuantifiedInterpolants, 155859 SizeOfPredicates, 505 NumberOfNonLiveVariables, 2650 ConjunctsInSsa, 816 ConjunctsInUnsatCore, 130 InterpolantComputations, 4 PerfectInterpolantSequences, 96/1878 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