/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/difference-det.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 05:39:41,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 05:39:41,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 05:39:42,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 05:39:42,095 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 05:39:42,114 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 05:39:42,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 05:39:42,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 05:39:42,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 05:39:42,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 05:39:42,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 05:39:42,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 05:39:42,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 05:39:42,116 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 05:39:42,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 05:39:42,116 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 05:39:42,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 05:39:42,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 05:39:42,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 05:39:42,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 05:39:42,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 05:39:42,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 05:39:42,117 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 05:39:42,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 05:39:42,118 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 05:39:42,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 05:39:42,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 05:39:42,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 05:39:42,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 05:39:42,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 05:39:42,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 05:39:42,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 05:39:42,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 05:39:42,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 05:39:42,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 05:39:42,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 05:39:42,119 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 05:39:42,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 05:39:42,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 05:39:42,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 05:39:42,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 05:39:42,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 05:39:42,347 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 05:39:42,351 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 05:39:42,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/difference-det.wvr.bpl [2022-01-18 05:39:42,352 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/difference-det.wvr.bpl' [2022-01-18 05:39:42,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 05:39:42,380 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 05:39:42,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 05:39:42,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 05:39:42,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 05:39:42,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:39:42" (1/1) ... [2022-01-18 05:39:42,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:39:42" (1/1) ... [2022-01-18 05:39:42,410 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 05:39:42,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 05:39:42,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 05:39:42,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 05:39:42,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 05:39:42,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:39:42" (1/1) ... [2022-01-18 05:39:42,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:39:42" (1/1) ... [2022-01-18 05:39:42,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:39:42" (1/1) ... [2022-01-18 05:39:42,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:39:42" (1/1) ... [2022-01-18 05:39:42,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:39:42" (1/1) ... [2022-01-18 05:39:42,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:39:42" (1/1) ... [2022-01-18 05:39:42,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:39:42" (1/1) ... [2022-01-18 05:39:42,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 05:39:42,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 05:39:42,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 05:39:42,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 05:39:42,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:39:42" (1/1) ... [2022-01-18 05:39:42,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 05:39:42,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:39:42,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 05:39:42,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 05:39:42,499 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 05:39:42,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 05:39:42,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 05:39:42,499 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 05:39:42,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 05:39:42,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 05:39:42,499 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 05:39:42,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 05:39:42,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 05:39:42,500 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 05:39:42,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 05:39:42,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 05:39:42,500 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-01-18 05:39:42,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-18 05:39:42,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-18 05:39:42,501 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 05:39:42,534 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 05:39:42,535 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 05:39:42,603 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 05:39:42,617 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 05:39:42,617 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 05:39:42,618 INFO L202 PluginConnector]: Adding new model difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 05:39:42 BoogieIcfgContainer [2022-01-18 05:39:42,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 05:39:42,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 05:39:42,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 05:39:42,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 05:39:42,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:39:42" (1/2) ... [2022-01-18 05:39:42,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afab113 and model type difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 05:39:42, skipping insertion in model container [2022-01-18 05:39:42,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 05:39:42" (2/2) ... [2022-01-18 05:39:42,639 INFO L111 eAbstractionObserver]: Analyzing ICFG difference-det.wvr.bpl [2022-01-18 05:39:42,643 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 05:39:42,643 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 05:39:42,643 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 05:39:42,643 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 05:39:42,687 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-18 05:39:42,734 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 05:39:42,739 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 05:39:42,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-18 05:39:42,745 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 40 transitions, 112 flow [2022-01-18 05:39:42,805 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 436 states, 435 states have (on average 3.8160919540229883) internal successors, (1660), 435 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:42,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 436 states, 435 states have (on average 3.8160919540229883) internal successors, (1660), 435 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:42,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 05:39:42,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:42,820 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] [2022-01-18 05:39:42,820 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:42,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:42,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1755915471, now seen corresponding path program 1 times [2022-01-18 05:39:42,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:42,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556130724] [2022-01-18 05:39:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:42,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:42,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:42,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556130724] [2022-01-18 05:39:42,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556130724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:39:42,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:39:42,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 05:39:42,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211233930] [2022-01-18 05:39:42,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:39:42,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:39:42,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:43,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:39:43,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:39:43,010 INFO L87 Difference]: Start difference. First operand has 436 states, 435 states have (on average 3.8160919540229883) internal successors, (1660), 435 states have internal predecessors, (1660), 0 states have call successors, (0), 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 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:43,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:43,104 INFO L93 Difference]: Finished difference Result 1268 states and 4623 transitions. [2022-01-18 05:39:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 05:39:43,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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 [2022-01-18 05:39:43,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:43,129 INFO L225 Difference]: With dead ends: 1268 [2022-01-18 05:39:43,130 INFO L226 Difference]: Without dead ends: 1057 [2022-01-18 05:39:43,131 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 [2022-01-18 05:39:43,133 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 48 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:43,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 68 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:39:43,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2022-01-18 05:39:43,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 776. [2022-01-18 05:39:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 775 states have (on average 3.7716129032258063) internal successors, (2923), 775 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 2923 transitions. [2022-01-18 05:39:43,266 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 2923 transitions. Word has length 26 [2022-01-18 05:39:43,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:43,268 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 2923 transitions. [2022-01-18 05:39:43,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:43,268 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 2923 transitions. [2022-01-18 05:39:43,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 05:39:43,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:43,275 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] [2022-01-18 05:39:43,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 05:39:43,276 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:43,276 INFO L85 PathProgramCache]: Analyzing trace with hash -46127411, now seen corresponding path program 1 times [2022-01-18 05:39:43,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:43,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771495849] [2022-01-18 05:39:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:43,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:43,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:43,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:43,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771495849] [2022-01-18 05:39:43,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771495849] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:39:43,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854878456] [2022-01-18 05:39:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:43,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:43,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:39:43,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:39:43,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 05:39:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:43,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 05:39:43,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:39:43,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:43,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:39:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:43,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854878456] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:39:43,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:39:43,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2022-01-18 05:39:43,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599471315] [2022-01-18 05:39:43,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:39:43,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 05:39:43,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:43,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 05:39:43,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:39:43,726 INFO L87 Difference]: Start difference. First operand 776 states and 2923 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) 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) [2022-01-18 05:39:43,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:43,851 INFO L93 Difference]: Finished difference Result 1444 states and 5320 transitions. [2022-01-18 05:39:43,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:39:43,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) 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 [2022-01-18 05:39:43,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:43,859 INFO L225 Difference]: With dead ends: 1444 [2022-01-18 05:39:43,860 INFO L226 Difference]: Without dead ends: 1444 [2022-01-18 05:39:43,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:39:43,863 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 124 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:43,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 90 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:39:43,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2022-01-18 05:39:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 868. [2022-01-18 05:39:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 3.795847750865052) internal successors, (3291), 867 states have internal predecessors, (3291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 3291 transitions. [2022-01-18 05:39:43,908 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 3291 transitions. Word has length 28 [2022-01-18 05:39:43,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:43,908 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 3291 transitions. [2022-01-18 05:39:43,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) 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) [2022-01-18 05:39:43,909 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 3291 transitions. [2022-01-18 05:39:43,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 05:39:43,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:43,912 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] [2022-01-18 05:39:43,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 05:39:44,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:44,130 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:44,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:44,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1167628143, now seen corresponding path program 1 times [2022-01-18 05:39:44,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:44,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146015509] [2022-01-18 05:39:44,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:44,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:44,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:44,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:44,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146015509] [2022-01-18 05:39:44,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146015509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:39:44,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:39:44,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 05:39:44,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132729176] [2022-01-18 05:39:44,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:39:44,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 05:39:44,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:44,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 05:39:44,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:39:44,177 INFO L87 Difference]: Start difference. First operand 868 states and 3291 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) 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) [2022-01-18 05:39:44,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:44,269 INFO L93 Difference]: Finished difference Result 1101 states and 3979 transitions. [2022-01-18 05:39:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:39:44,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) 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 [2022-01-18 05:39:44,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:44,275 INFO L225 Difference]: With dead ends: 1101 [2022-01-18 05:39:44,276 INFO L226 Difference]: Without dead ends: 1047 [2022-01-18 05:39:44,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:39:44,277 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 82 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:44,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 97 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:39:44,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2022-01-18 05:39:44,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 912. [2022-01-18 05:39:44,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 911 states have (on average 3.773874862788145) internal successors, (3438), 911 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:44,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 3438 transitions. [2022-01-18 05:39:44,304 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 3438 transitions. Word has length 28 [2022-01-18 05:39:44,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:44,304 INFO L470 AbstractCegarLoop]: Abstraction has 912 states and 3438 transitions. [2022-01-18 05:39:44,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) 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) [2022-01-18 05:39:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 3438 transitions. [2022-01-18 05:39:44,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 05:39:44,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:44,307 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] [2022-01-18 05:39:44,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 05:39:44,308 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:44,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:44,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1666995535, now seen corresponding path program 2 times [2022-01-18 05:39:44,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:44,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233282586] [2022-01-18 05:39:44,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:44,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:44,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:44,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233282586] [2022-01-18 05:39:44,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233282586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:39:44,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:39:44,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 05:39:44,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302948927] [2022-01-18 05:39:44,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:39:44,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 05:39:44,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:44,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 05:39:44,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:39:44,355 INFO L87 Difference]: Start difference. First operand 912 states and 3438 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) 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) [2022-01-18 05:39:44,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:44,416 INFO L93 Difference]: Finished difference Result 834 states and 3134 transitions. [2022-01-18 05:39:44,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:39:44,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) 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 [2022-01-18 05:39:44,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:44,421 INFO L225 Difference]: With dead ends: 834 [2022-01-18 05:39:44,421 INFO L226 Difference]: Without dead ends: 834 [2022-01-18 05:39:44,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:39:44,425 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 49 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:44,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 80 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:39:44,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-01-18 05:39:44,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 774. [2022-01-18 05:39:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 773 states have (on average 3.8007761966364813) internal successors, (2938), 773 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 2938 transitions. [2022-01-18 05:39:44,445 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 2938 transitions. Word has length 28 [2022-01-18 05:39:44,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:44,445 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 2938 transitions. [2022-01-18 05:39:44,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) 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) [2022-01-18 05:39:44,446 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 2938 transitions. [2022-01-18 05:39:44,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 05:39:44,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:44,448 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] [2022-01-18 05:39:44,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 05:39:44,448 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:44,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:44,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1980069109, now seen corresponding path program 2 times [2022-01-18 05:39:44,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:44,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162277164] [2022-01-18 05:39:44,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:44,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:44,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:44,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:44,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162277164] [2022-01-18 05:39:44,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162277164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:39:44,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:39:44,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 05:39:44,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019826281] [2022-01-18 05:39:44,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:39:44,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 05:39:44,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 05:39:44,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:39:44,504 INFO L87 Difference]: Start difference. First operand 774 states and 2938 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) 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) [2022-01-18 05:39:44,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:44,571 INFO L93 Difference]: Finished difference Result 878 states and 3300 transitions. [2022-01-18 05:39:44,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:39:44,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) 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 [2022-01-18 05:39:44,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:44,576 INFO L225 Difference]: With dead ends: 878 [2022-01-18 05:39:44,576 INFO L226 Difference]: Without dead ends: 838 [2022-01-18 05:39:44,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:39:44,579 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 119 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:44,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 60 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:39:44,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2022-01-18 05:39:44,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 726. [2022-01-18 05:39:44,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 3.8096551724137933) internal successors, (2762), 725 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 2762 transitions. [2022-01-18 05:39:44,599 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 2762 transitions. Word has length 28 [2022-01-18 05:39:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:44,600 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 2762 transitions. [2022-01-18 05:39:44,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) 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) [2022-01-18 05:39:44,602 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 2762 transitions. [2022-01-18 05:39:44,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 05:39:44,609 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:44,609 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, 1, 1] [2022-01-18 05:39:44,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 05:39:44,609 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:44,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:44,610 INFO L85 PathProgramCache]: Analyzing trace with hash 276238829, now seen corresponding path program 1 times [2022-01-18 05:39:44,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:44,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696475373] [2022-01-18 05:39:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:44,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:44,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:44,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696475373] [2022-01-18 05:39:44,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696475373] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:39:44,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111059228] [2022-01-18 05:39:44,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:44,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:44,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:39:44,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:39:44,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 05:39:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:44,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:39:44,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:39:44,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:44,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:39:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:44,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111059228] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:39:44,998 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:39:44,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 8 [2022-01-18 05:39:44,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077793241] [2022-01-18 05:39:44,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:39:44,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:39:44,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:44,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:39:44,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:39:44,999 INFO L87 Difference]: Start difference. First operand 726 states and 2762 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:45,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:45,127 INFO L93 Difference]: Finished difference Result 3314 states and 12458 transitions. [2022-01-18 05:39:45,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:39:45,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 05:39:45,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:45,144 INFO L225 Difference]: With dead ends: 3314 [2022-01-18 05:39:45,144 INFO L226 Difference]: Without dead ends: 3000 [2022-01-18 05:39:45,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:39:45,145 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 87 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:45,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 289 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:39:45,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2022-01-18 05:39:45,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2163. [2022-01-18 05:39:45,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 4.01063829787234) internal successors, (8671), 2162 states have internal predecessors, (8671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 8671 transitions. [2022-01-18 05:39:45,287 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 8671 transitions. Word has length 30 [2022-01-18 05:39:45,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:45,288 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 8671 transitions. [2022-01-18 05:39:45,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 8671 transitions. [2022-01-18 05:39:45,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 05:39:45,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:45,293 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, 1, 1] [2022-01-18 05:39:45,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 05:39:45,511 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 [2022-01-18 05:39:45,512 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:45,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:45,512 INFO L85 PathProgramCache]: Analyzing trace with hash -156136659, now seen corresponding path program 2 times [2022-01-18 05:39:45,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:45,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744303180] [2022-01-18 05:39:45,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:45,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:39:45,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:45,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744303180] [2022-01-18 05:39:45,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744303180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:39:45,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:39:45,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 05:39:45,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637601835] [2022-01-18 05:39:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:39:45,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 05:39:45,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:45,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 05:39:45,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:39:45,552 INFO L87 Difference]: Start difference. First operand 2163 states and 8671 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:45,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:45,621 INFO L93 Difference]: Finished difference Result 3426 states and 13470 transitions. [2022-01-18 05:39:45,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:39:45,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 05:39:45,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:45,638 INFO L225 Difference]: With dead ends: 3426 [2022-01-18 05:39:45,638 INFO L226 Difference]: Without dead ends: 3395 [2022-01-18 05:39:45,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:39:45,639 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 73 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:45,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 134 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:39:45,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2022-01-18 05:39:45,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 2948. [2022-01-18 05:39:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2947 states have (on average 4.058025110281642) internal successors, (11959), 2947 states have internal predecessors, (11959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:45,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 11959 transitions. [2022-01-18 05:39:45,717 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 11959 transitions. Word has length 30 [2022-01-18 05:39:45,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:45,717 INFO L470 AbstractCegarLoop]: Abstraction has 2948 states and 11959 transitions. [2022-01-18 05:39:45,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:45,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 11959 transitions. [2022-01-18 05:39:45,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 05:39:45,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:45,725 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, 1, 1] [2022-01-18 05:39:45,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 05:39:45,725 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:45,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:45,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1650400021, now seen corresponding path program 3 times [2022-01-18 05:39:45,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:45,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642408470] [2022-01-18 05:39:45,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:45,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:45,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:45,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642408470] [2022-01-18 05:39:45,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642408470] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:39:45,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090066075] [2022-01-18 05:39:45,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:39:45,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:45,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:39:45,799 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:39:45,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 05:39:45,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 05:39:45,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:39:45,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:39:45,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:39:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:45,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:39:46,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:46,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090066075] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:39:46,058 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:39:46,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2022-01-18 05:39:46,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465199462] [2022-01-18 05:39:46,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:39:46,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 05:39:46,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:46,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 05:39:46,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:39:46,059 INFO L87 Difference]: Start difference. First operand 2948 states and 11959 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:46,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:46,552 INFO L93 Difference]: Finished difference Result 11439 states and 44960 transitions. [2022-01-18 05:39:46,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 05:39:46,553 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:39:46,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:46,616 INFO L225 Difference]: With dead ends: 11439 [2022-01-18 05:39:46,616 INFO L226 Difference]: Without dead ends: 11439 [2022-01-18 05:39:46,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=756, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 05:39:46,617 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 345 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:46,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 473 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:39:46,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11439 states. [2022-01-18 05:39:46,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11439 to 4372. [2022-01-18 05:39:46,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4372 states, 4371 states have (on average 4.153511782200869) internal successors, (18155), 4371 states have internal predecessors, (18155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:46,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4372 states to 4372 states and 18155 transitions. [2022-01-18 05:39:46,859 INFO L78 Accepts]: Start accepts. Automaton has 4372 states and 18155 transitions. Word has length 32 [2022-01-18 05:39:46,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:46,859 INFO L470 AbstractCegarLoop]: Abstraction has 4372 states and 18155 transitions. [2022-01-18 05:39:46,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:46,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4372 states and 18155 transitions. [2022-01-18 05:39:46,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 05:39:46,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:46,873 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, 1, 1, 1, 1] [2022-01-18 05:39:46,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 05:39:47,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:47,088 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:47,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1759037843, now seen corresponding path program 1 times [2022-01-18 05:39:47,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:47,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052175690] [2022-01-18 05:39:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:47,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:39:47,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:47,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052175690] [2022-01-18 05:39:47,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052175690] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:39:47,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461287049] [2022-01-18 05:39:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:47,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:47,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:39:47,176 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:39:47,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 05:39:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:47,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 05:39:47,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:39:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:39:47,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:39:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:39:47,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461287049] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 05:39:47,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 05:39:47,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2022-01-18 05:39:47,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833707207] [2022-01-18 05:39:47,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:39:47,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 05:39:47,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:47,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 05:39:47,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:39:47,444 INFO L87 Difference]: Start difference. First operand 4372 states and 18155 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:47,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:47,591 INFO L93 Difference]: Finished difference Result 9085 states and 36933 transitions. [2022-01-18 05:39:47,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:39:47,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 05:39:47,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:47,626 INFO L225 Difference]: With dead ends: 9085 [2022-01-18 05:39:47,626 INFO L226 Difference]: Without dead ends: 9085 [2022-01-18 05:39:47,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:39:47,627 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 116 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:47,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 90 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:39:47,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9085 states. [2022-01-18 05:39:47,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9085 to 5549. [2022-01-18 05:39:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 5548 states have (on average 4.195385724585436) internal successors, (23276), 5548 states have internal predecessors, (23276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:47,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 23276 transitions. [2022-01-18 05:39:47,796 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 23276 transitions. Word has length 32 [2022-01-18 05:39:47,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:47,797 INFO L470 AbstractCegarLoop]: Abstraction has 5549 states and 23276 transitions. [2022-01-18 05:39:47,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:47,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 23276 transitions. [2022-01-18 05:39:47,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 05:39:47,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:47,811 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, 1, 1] [2022-01-18 05:39:47,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 05:39:48,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:48,031 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:48,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:48,032 INFO L85 PathProgramCache]: Analyzing trace with hash 146684591, now seen corresponding path program 4 times [2022-01-18 05:39:48,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:48,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365947413] [2022-01-18 05:39:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:48,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:48,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:48,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365947413] [2022-01-18 05:39:48,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365947413] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:39:48,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265448447] [2022-01-18 05:39:48,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:39:48,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:48,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:39:48,073 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:39:48,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 05:39:48,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:39:48,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:39:48,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:39:48,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:39:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:48,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:39:48,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:48,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265448447] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:39:48,294 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:39:48,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-18 05:39:48,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737382948] [2022-01-18 05:39:48,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:39:48,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:39:48,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:48,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:39:48,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:39:48,295 INFO L87 Difference]: Start difference. First operand 5549 states and 23276 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 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) [2022-01-18 05:39:48,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:48,814 INFO L93 Difference]: Finished difference Result 15361 states and 62588 transitions. [2022-01-18 05:39:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 05:39:48,814 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 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 [2022-01-18 05:39:48,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:48,897 INFO L225 Difference]: With dead ends: 15361 [2022-01-18 05:39:48,898 INFO L226 Difference]: Without dead ends: 15091 [2022-01-18 05:39:48,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2022-01-18 05:39:48,899 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 517 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:48,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 293 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:39:48,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15091 states. [2022-01-18 05:39:49,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15091 to 8451. [2022-01-18 05:39:49,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8451 states, 8450 states have (on average 4.295739644970414) internal successors, (36299), 8450 states have internal predecessors, (36299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:49,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8451 states to 8451 states and 36299 transitions. [2022-01-18 05:39:49,216 INFO L78 Accepts]: Start accepts. Automaton has 8451 states and 36299 transitions. Word has length 32 [2022-01-18 05:39:49,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:49,217 INFO L470 AbstractCegarLoop]: Abstraction has 8451 states and 36299 transitions. [2022-01-18 05:39:49,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 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) [2022-01-18 05:39:49,217 INFO L276 IsEmpty]: Start isEmpty. Operand 8451 states and 36299 transitions. [2022-01-18 05:39:49,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 05:39:49,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:49,238 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, 1, 1, 1, 1] [2022-01-18 05:39:49,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 05:39:49,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-18 05:39:49,449 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:49,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:49,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1750324885, now seen corresponding path program 1 times [2022-01-18 05:39:49,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:49,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984099564] [2022-01-18 05:39:49,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:49,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:39:49,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:49,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984099564] [2022-01-18 05:39:49,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984099564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:39:49,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:39:49,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 05:39:49,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155678081] [2022-01-18 05:39:49,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:39:49,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 05:39:49,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:49,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 05:39:49,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:39:49,475 INFO L87 Difference]: Start difference. First operand 8451 states and 36299 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:49,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:49,604 INFO L93 Difference]: Finished difference Result 11634 states and 49174 transitions. [2022-01-18 05:39:49,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:39:49,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 05:39:49,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:49,642 INFO L225 Difference]: With dead ends: 11634 [2022-01-18 05:39:49,642 INFO L226 Difference]: Without dead ends: 11496 [2022-01-18 05:39:49,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:39:49,643 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 74 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:49,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 100 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:39:49,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11496 states. [2022-01-18 05:39:49,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11496 to 9206. [2022-01-18 05:39:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9206 states, 9205 states have (on average 4.329277566539924) internal successors, (39851), 9205 states have internal predecessors, (39851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:49,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9206 states to 9206 states and 39851 transitions. [2022-01-18 05:39:49,931 INFO L78 Accepts]: Start accepts. Automaton has 9206 states and 39851 transitions. Word has length 32 [2022-01-18 05:39:49,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:49,931 INFO L470 AbstractCegarLoop]: Abstraction has 9206 states and 39851 transitions. [2022-01-18 05:39:49,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:49,931 INFO L276 IsEmpty]: Start isEmpty. Operand 9206 states and 39851 transitions. [2022-01-18 05:39:49,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 05:39:49,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:49,952 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, 1, 1, 1, 1] [2022-01-18 05:39:49,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 05:39:49,952 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:49,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:49,952 INFO L85 PathProgramCache]: Analyzing trace with hash -431820821, now seen corresponding path program 2 times [2022-01-18 05:39:49,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:49,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238098799] [2022-01-18 05:39:49,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:49,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:39:49,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:49,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238098799] [2022-01-18 05:39:49,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238098799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:39:49,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:39:49,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 05:39:49,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771954209] [2022-01-18 05:39:49,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:39:49,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 05:39:49,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:49,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 05:39:49,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:39:49,987 INFO L87 Difference]: Start difference. First operand 9206 states and 39851 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:50,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:50,086 INFO L93 Difference]: Finished difference Result 10977 states and 46247 transitions. [2022-01-18 05:39:50,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:39:50,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 05:39:50,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:50,118 INFO L225 Difference]: With dead ends: 10977 [2022-01-18 05:39:50,118 INFO L226 Difference]: Without dead ends: 10950 [2022-01-18 05:39:50,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:39:50,119 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 77 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:50,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 73 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:39:50,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10950 states. [2022-01-18 05:39:50,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10950 to 9177. [2022-01-18 05:39:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9177 states, 9176 states have (on average 4.283129904097646) internal successors, (39302), 9176 states have internal predecessors, (39302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:50,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9177 states to 9177 states and 39302 transitions. [2022-01-18 05:39:50,354 INFO L78 Accepts]: Start accepts. Automaton has 9177 states and 39302 transitions. Word has length 32 [2022-01-18 05:39:50,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:50,354 INFO L470 AbstractCegarLoop]: Abstraction has 9177 states and 39302 transitions. [2022-01-18 05:39:50,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:50,354 INFO L276 IsEmpty]: Start isEmpty. Operand 9177 states and 39302 transitions. [2022-01-18 05:39:50,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 05:39:50,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:50,375 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, 1, 1, 1, 1] [2022-01-18 05:39:50,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 05:39:50,375 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:50,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:50,376 INFO L85 PathProgramCache]: Analyzing trace with hash -77046865, now seen corresponding path program 2 times [2022-01-18 05:39:50,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:50,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680372740] [2022-01-18 05:39:50,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:50,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:39:50,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:50,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680372740] [2022-01-18 05:39:50,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680372740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:39:50,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:39:50,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 05:39:50,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046487111] [2022-01-18 05:39:50,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:39:50,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 05:39:50,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:50,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 05:39:50,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:39:50,401 INFO L87 Difference]: Start difference. First operand 9177 states and 39302 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:50,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:50,572 INFO L93 Difference]: Finished difference Result 11062 states and 46211 transitions. [2022-01-18 05:39:50,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:39:50,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 05:39:50,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:50,604 INFO L225 Difference]: With dead ends: 11062 [2022-01-18 05:39:50,604 INFO L226 Difference]: Without dead ends: 11002 [2022-01-18 05:39:50,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 05:39:50,605 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 112 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:50,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 81 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:39:50,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11002 states. [2022-01-18 05:39:50,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11002 to 9261. [2022-01-18 05:39:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9261 states, 9260 states have (on average 4.27645788336933) internal successors, (39600), 9260 states have internal predecessors, (39600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:50,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9261 states to 9261 states and 39600 transitions. [2022-01-18 05:39:50,815 INFO L78 Accepts]: Start accepts. Automaton has 9261 states and 39600 transitions. Word has length 32 [2022-01-18 05:39:50,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:50,815 INFO L470 AbstractCegarLoop]: Abstraction has 9261 states and 39600 transitions. [2022-01-18 05:39:50,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:50,815 INFO L276 IsEmpty]: Start isEmpty. Operand 9261 states and 39600 transitions. [2022-01-18 05:39:50,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 05:39:50,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:50,835 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, 1, 1] [2022-01-18 05:39:50,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 05:39:50,836 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:50,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:50,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1662113073, now seen corresponding path program 5 times [2022-01-18 05:39:50,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:50,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461386465] [2022-01-18 05:39:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:50,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:50,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:50,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461386465] [2022-01-18 05:39:50,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461386465] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:39:50,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069066086] [2022-01-18 05:39:50,884 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:39:50,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:50,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:39:50,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:39:50,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 05:39:50,912 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 05:39:50,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:39:50,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:39:50,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:39:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:51,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:39:51,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:51,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069066086] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:39:51,161 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:39:51,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2022-01-18 05:39:51,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996106379] [2022-01-18 05:39:51,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:39:51,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 05:39:51,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:51,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 05:39:51,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:39:51,162 INFO L87 Difference]: Start difference. First operand 9261 states and 39600 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:51,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:51,762 INFO L93 Difference]: Finished difference Result 19937 states and 80608 transitions. [2022-01-18 05:39:51,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 05:39:51,763 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:39:51,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:51,842 INFO L225 Difference]: With dead ends: 19937 [2022-01-18 05:39:51,843 INFO L226 Difference]: Without dead ends: 19937 [2022-01-18 05:39:51,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 05:39:51,844 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 418 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:51,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 501 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:39:51,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19937 states. [2022-01-18 05:39:52,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19937 to 10772. [2022-01-18 05:39:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10772 states, 10771 states have (on average 4.3019218271284005) internal successors, (46336), 10771 states have internal predecessors, (46336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:52,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10772 states to 10772 states and 46336 transitions. [2022-01-18 05:39:52,372 INFO L78 Accepts]: Start accepts. Automaton has 10772 states and 46336 transitions. Word has length 32 [2022-01-18 05:39:52,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:52,372 INFO L470 AbstractCegarLoop]: Abstraction has 10772 states and 46336 transitions. [2022-01-18 05:39:52,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:52,373 INFO L276 IsEmpty]: Start isEmpty. Operand 10772 states and 46336 transitions. [2022-01-18 05:39:52,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 05:39:52,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:52,399 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, 1, 1] [2022-01-18 05:39:52,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-18 05:39:52,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:52,604 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:52,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:52,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1014210421, now seen corresponding path program 6 times [2022-01-18 05:39:52,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:52,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440374274] [2022-01-18 05:39:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:52,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:52,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:52,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440374274] [2022-01-18 05:39:52,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440374274] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:39:52,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847442785] [2022-01-18 05:39:52,648 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:39:52,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:52,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:39:52,649 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:39:52,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 05:39:52,673 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 05:39:52,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:39:52,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:39:52,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:39:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:52,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:39:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:52,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847442785] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:39:52,932 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:39:52,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-01-18 05:39:52,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460156688] [2022-01-18 05:39:52,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:39:52,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:39:52,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:52,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:39:52,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:39:52,933 INFO L87 Difference]: Start difference. First operand 10772 states and 46336 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:53,457 INFO L93 Difference]: Finished difference Result 17283 states and 70897 transitions. [2022-01-18 05:39:53,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 05:39:53,458 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:39:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:53,506 INFO L225 Difference]: With dead ends: 17283 [2022-01-18 05:39:53,506 INFO L226 Difference]: Without dead ends: 17145 [2022-01-18 05:39:53,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=259, Invalid=553, Unknown=0, NotChecked=0, Total=812 [2022-01-18 05:39:53,507 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 330 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:53,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 324 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:39:53,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17145 states. [2022-01-18 05:39:53,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17145 to 10795. [2022-01-18 05:39:53,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10795 states, 10794 states have (on average 4.285158421345192) internal successors, (46254), 10794 states have internal predecessors, (46254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10795 states to 10795 states and 46254 transitions. [2022-01-18 05:39:53,820 INFO L78 Accepts]: Start accepts. Automaton has 10795 states and 46254 transitions. Word has length 32 [2022-01-18 05:39:53,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:53,820 INFO L470 AbstractCegarLoop]: Abstraction has 10795 states and 46254 transitions. [2022-01-18 05:39:53,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:53,820 INFO L276 IsEmpty]: Start isEmpty. Operand 10795 states and 46254 transitions. [2022-01-18 05:39:53,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 05:39:53,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:53,841 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, 1, 1] [2022-01-18 05:39:53,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 05:39:54,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:54,042 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:54,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:54,042 INFO L85 PathProgramCache]: Analyzing trace with hash -237310289, now seen corresponding path program 7 times [2022-01-18 05:39:54,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:54,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376962717] [2022-01-18 05:39:54,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:54,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:39:54,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:54,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376962717] [2022-01-18 05:39:54,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376962717] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:39:54,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861305621] [2022-01-18 05:39:54,087 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:39:54,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:54,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:39:54,089 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:39:54,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 05:39:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:54,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:39:54,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:39:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:54,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:39:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:54,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861305621] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:39:54,425 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:39:54,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-01-18 05:39:54,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279386875] [2022-01-18 05:39:54,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:39:54,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 05:39:54,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:54,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 05:39:54,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-01-18 05:39:54,426 INFO L87 Difference]: Start difference. First operand 10795 states and 46254 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:55,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:55,162 INFO L93 Difference]: Finished difference Result 30373 states and 124811 transitions. [2022-01-18 05:39:55,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 05:39:55,163 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 05:39:55,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:55,366 INFO L225 Difference]: With dead ends: 30373 [2022-01-18 05:39:55,366 INFO L226 Difference]: Without dead ends: 30373 [2022-01-18 05:39:55,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=434, Invalid=972, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 05:39:55,367 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 462 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:55,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 453 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:39:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30373 states. [2022-01-18 05:39:55,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30373 to 14993. [2022-01-18 05:39:55,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14993 states, 14992 states have (on average 4.368729989327641) internal successors, (65496), 14992 states have internal predecessors, (65496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14993 states to 14993 states and 65496 transitions. [2022-01-18 05:39:55,900 INFO L78 Accepts]: Start accepts. Automaton has 14993 states and 65496 transitions. Word has length 32 [2022-01-18 05:39:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:55,901 INFO L470 AbstractCegarLoop]: Abstraction has 14993 states and 65496 transitions. [2022-01-18 05:39:55,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:55,901 INFO L276 IsEmpty]: Start isEmpty. Operand 14993 states and 65496 transitions. [2022-01-18 05:39:55,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 05:39:55,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:55,931 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, 1, 1] [2022-01-18 05:39:55,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 05:39:56,133 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,SelfDestructingSolverStorable15 [2022-01-18 05:39:56,133 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:56,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:56,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1931533901, now seen corresponding path program 8 times [2022-01-18 05:39:56,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:56,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569678466] [2022-01-18 05:39:56,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:56,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:39:56,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:56,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569678466] [2022-01-18 05:39:56,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569678466] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:39:56,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793323571] [2022-01-18 05:39:56,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:39:56,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:56,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:39:56,181 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:39:56,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 05:39:56,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:39:56,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:39:56,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:39:56,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:39:56,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:56,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:39:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:56,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793323571] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:39:56,458 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:39:56,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-01-18 05:39:56,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185608687] [2022-01-18 05:39:56,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:39:56,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:39:56,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:56,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:39:56,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:39:56,459 INFO L87 Difference]: Start difference. First operand 14993 states and 65496 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:56,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:56,913 INFO L93 Difference]: Finished difference Result 19071 states and 81167 transitions. [2022-01-18 05:39:56,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 05:39:56,913 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:39:56,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:57,064 INFO L225 Difference]: With dead ends: 19071 [2022-01-18 05:39:57,066 INFO L226 Difference]: Without dead ends: 19009 [2022-01-18 05:39:57,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2022-01-18 05:39:57,066 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 390 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:57,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 273 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:39:57,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19009 states. [2022-01-18 05:39:57,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19009 to 15495. [2022-01-18 05:39:57,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15495 states, 15494 states have (on average 4.3805344004130635) internal successors, (67872), 15494 states have internal predecessors, (67872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15495 states to 15495 states and 67872 transitions. [2022-01-18 05:39:57,496 INFO L78 Accepts]: Start accepts. Automaton has 15495 states and 67872 transitions. Word has length 32 [2022-01-18 05:39:57,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:57,496 INFO L470 AbstractCegarLoop]: Abstraction has 15495 states and 67872 transitions. [2022-01-18 05:39:57,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 15495 states and 67872 transitions. [2022-01-18 05:39:57,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 05:39:57,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:57,532 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, 1, 1] [2022-01-18 05:39:57,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-18 05:39:57,747 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,SelfDestructingSolverStorable16 [2022-01-18 05:39:57,747 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:57,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:57,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1018081403, now seen corresponding path program 9 times [2022-01-18 05:39:57,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:57,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427885798] [2022-01-18 05:39:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:57,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:57,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:39:57,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:57,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427885798] [2022-01-18 05:39:57,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427885798] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:39:57,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820045246] [2022-01-18 05:39:57,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:39:57,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:57,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:39:57,793 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:39:57,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 05:39:57,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 05:39:57,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:39:57,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:39:57,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:39:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:57,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:39:58,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:58,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820045246] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:39:58,102 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:39:58,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-01-18 05:39:58,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066250553] [2022-01-18 05:39:58,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:39:58,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:39:58,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:58,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:39:58,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:39:58,103 INFO L87 Difference]: Start difference. First operand 15495 states and 67872 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:39:58,722 INFO L93 Difference]: Finished difference Result 25596 states and 106759 transitions. [2022-01-18 05:39:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 05:39:58,723 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:39:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:39:58,819 INFO L225 Difference]: With dead ends: 25596 [2022-01-18 05:39:58,819 INFO L226 Difference]: Without dead ends: 25518 [2022-01-18 05:39:58,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=309, Invalid=683, Unknown=0, NotChecked=0, Total=992 [2022-01-18 05:39:58,820 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 492 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:39:58,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 256 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:39:58,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25518 states. [2022-01-18 05:39:59,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25518 to 15518. [2022-01-18 05:39:59,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15518 states, 15517 states have (on average 4.374299155764645) internal successors, (67876), 15517 states have internal predecessors, (67876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:59,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15518 states to 15518 states and 67876 transitions. [2022-01-18 05:39:59,356 INFO L78 Accepts]: Start accepts. Automaton has 15518 states and 67876 transitions. Word has length 32 [2022-01-18 05:39:59,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:39:59,356 INFO L470 AbstractCegarLoop]: Abstraction has 15518 states and 67876 transitions. [2022-01-18 05:39:59,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:39:59,356 INFO L276 IsEmpty]: Start isEmpty. Operand 15518 states and 67876 transitions. [2022-01-18 05:39:59,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 05:39:59,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:39:59,389 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, 1, 1] [2022-01-18 05:39:59,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-01-18 05:39:59,603 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,SelfDestructingSolverStorable17 [2022-01-18 05:39:59,603 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:39:59,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:39:59,604 INFO L85 PathProgramCache]: Analyzing trace with hash 188789747, now seen corresponding path program 10 times [2022-01-18 05:39:59,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:39:59,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903174945] [2022-01-18 05:39:59,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:39:59,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:39:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:39:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:59,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:39:59,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903174945] [2022-01-18 05:39:59,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903174945] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:39:59,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078965222] [2022-01-18 05:39:59,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:39:59,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:39:59,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:39:59,638 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:39:59,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 05:39:59,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:39:59,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:39:59,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 05:39:59,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:39:59,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:59,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:39:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:39:59,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078965222] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:39:59,863 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:39:59,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-18 05:39:59,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602946792] [2022-01-18 05:39:59,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:39:59,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 05:39:59,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:39:59,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 05:39:59,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:39:59,865 INFO L87 Difference]: Start difference. First operand 15518 states and 67876 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 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) [2022-01-18 05:40:00,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:40:00,429 INFO L93 Difference]: Finished difference Result 25214 states and 104840 transitions. [2022-01-18 05:40:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 05:40:00,430 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 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 [2022-01-18 05:40:00,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:40:00,508 INFO L225 Difference]: With dead ends: 25214 [2022-01-18 05:40:00,508 INFO L226 Difference]: Without dead ends: 25094 [2022-01-18 05:40:00,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=309, Invalid=683, Unknown=0, NotChecked=0, Total=992 [2022-01-18 05:40:00,509 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 443 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:40:00,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 275 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:40:00,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25094 states. [2022-01-18 05:40:00,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25094 to 16132. [2022-01-18 05:40:00,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16132 states, 16131 states have (on average 4.372140598846941) internal successors, (70527), 16131 states have internal predecessors, (70527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:01,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16132 states to 16132 states and 70527 transitions. [2022-01-18 05:40:01,066 INFO L78 Accepts]: Start accepts. Automaton has 16132 states and 70527 transitions. Word has length 32 [2022-01-18 05:40:01,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:40:01,066 INFO L470 AbstractCegarLoop]: Abstraction has 16132 states and 70527 transitions. [2022-01-18 05:40:01,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 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) [2022-01-18 05:40:01,067 INFO L276 IsEmpty]: Start isEmpty. Operand 16132 states and 70527 transitions. [2022-01-18 05:40:01,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 05:40:01,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:40:01,111 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, 1, 1] [2022-01-18 05:40:01,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 05:40:01,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:01,315 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:40:01,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:40:01,315 INFO L85 PathProgramCache]: Analyzing trace with hash -222345683, now seen corresponding path program 11 times [2022-01-18 05:40:01,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:40:01,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844052665] [2022-01-18 05:40:01,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:40:01,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:40:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:40:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:01,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:40:01,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844052665] [2022-01-18 05:40:01,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844052665] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:40:01,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303935624] [2022-01-18 05:40:01,372 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:40:01,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:01,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:40:01,373 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:40:01,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 05:40:01,397 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 05:40:01,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:40:01,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 05:40:01,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:40:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:01,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:40:01,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:01,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303935624] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:40:01,752 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:40:01,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 11 [2022-01-18 05:40:01,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790041009] [2022-01-18 05:40:01,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:40:01,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:40:01,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:40:01,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:40:01,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:40:01,753 INFO L87 Difference]: Start difference. First operand 16132 states and 70527 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:02,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:40:02,224 INFO L93 Difference]: Finished difference Result 30028 states and 127196 transitions. [2022-01-18 05:40:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:40:02,224 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:40:02,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:40:02,333 INFO L225 Difference]: With dead ends: 30028 [2022-01-18 05:40:02,333 INFO L226 Difference]: Without dead ends: 29440 [2022-01-18 05:40:02,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:40:02,333 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 197 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:40:02,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 397 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:40:02,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29440 states. [2022-01-18 05:40:02,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29440 to 21834. [2022-01-18 05:40:02,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21834 states, 21833 states have (on average 4.3858379517244535) internal successors, (95756), 21833 states have internal predecessors, (95756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:02,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21834 states to 21834 states and 95756 transitions. [2022-01-18 05:40:02,973 INFO L78 Accepts]: Start accepts. Automaton has 21834 states and 95756 transitions. Word has length 34 [2022-01-18 05:40:02,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:40:02,974 INFO L470 AbstractCegarLoop]: Abstraction has 21834 states and 95756 transitions. [2022-01-18 05:40:02,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:02,974 INFO L276 IsEmpty]: Start isEmpty. Operand 21834 states and 95756 transitions. [2022-01-18 05:40:03,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 05:40:03,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:40:03,017 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, 1, 1] [2022-01-18 05:40:03,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 05:40:03,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:03,217 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:40:03,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:40:03,218 INFO L85 PathProgramCache]: Analyzing trace with hash -911583255, now seen corresponding path program 12 times [2022-01-18 05:40:03,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:40:03,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239510362] [2022-01-18 05:40:03,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:40:03,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:40:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:40:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:40:03,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:40:03,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239510362] [2022-01-18 05:40:03,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239510362] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:40:03,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903327740] [2022-01-18 05:40:03,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:40:03,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:03,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:40:03,270 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:40:03,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 05:40:03,296 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 05:40:03,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:40:03,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 05:40:03,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:40:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:03,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:40:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:40:03,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903327740] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:40:03,732 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:40:03,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 11 [2022-01-18 05:40:03,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400189124] [2022-01-18 05:40:03,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:40:03,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:40:03,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:40:03,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:40:03,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:40:03,733 INFO L87 Difference]: Start difference. First operand 21834 states and 95756 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:04,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:40:04,502 INFO L93 Difference]: Finished difference Result 60940 states and 262767 transitions. [2022-01-18 05:40:04,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 05:40:04,502 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:40:04,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:40:04,794 INFO L225 Difference]: With dead ends: 60940 [2022-01-18 05:40:04,795 INFO L226 Difference]: Without dead ends: 58958 [2022-01-18 05:40:04,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-01-18 05:40:04,795 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 180 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:40:04,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 625 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:40:04,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58958 states. [2022-01-18 05:40:06,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58958 to 39850. [2022-01-18 05:40:06,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39850 states, 39849 states have (on average 4.48199452934829) internal successors, (178603), 39849 states have internal predecessors, (178603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39850 states to 39850 states and 178603 transitions. [2022-01-18 05:40:06,408 INFO L78 Accepts]: Start accepts. Automaton has 39850 states and 178603 transitions. Word has length 34 [2022-01-18 05:40:06,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:40:06,408 INFO L470 AbstractCegarLoop]: Abstraction has 39850 states and 178603 transitions. [2022-01-18 05:40:06,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:06,408 INFO L276 IsEmpty]: Start isEmpty. Operand 39850 states and 178603 transitions. [2022-01-18 05:40:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 05:40:06,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:40:06,502 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, 1, 1] [2022-01-18 05:40:06,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 05:40:06,703 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,SelfDestructingSolverStorable20 [2022-01-18 05:40:06,704 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:40:06,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:40:06,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2078759021, now seen corresponding path program 13 times [2022-01-18 05:40:06,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:40:06,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792742915] [2022-01-18 05:40:06,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:40:06,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:40:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:40:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:40:06,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:40:06,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792742915] [2022-01-18 05:40:06,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792742915] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:40:06,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131508928] [2022-01-18 05:40:06,749 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:40:06,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:06,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:40:06,750 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:40:06,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 05:40:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:40:06,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 05:40:06,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:40:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:06,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:40:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:40:07,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131508928] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:40:07,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:40:07,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 11 [2022-01-18 05:40:07,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990786930] [2022-01-18 05:40:07,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:40:07,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 05:40:07,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:40:07,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 05:40:07,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:40:07,036 INFO L87 Difference]: Start difference. First operand 39850 states and 178603 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:07,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:40:07,736 INFO L93 Difference]: Finished difference Result 60941 states and 268418 transitions. [2022-01-18 05:40:07,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 05:40:07,736 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:40:07,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:40:07,977 INFO L225 Difference]: With dead ends: 60941 [2022-01-18 05:40:07,978 INFO L226 Difference]: Without dead ends: 60279 [2022-01-18 05:40:07,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 05:40:07,979 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 169 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:40:07,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 484 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:40:08,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60279 states. [2022-01-18 05:40:09,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60279 to 54948. [2022-01-18 05:40:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54948 states, 54947 states have (on average 4.507143247129052) internal successors, (247654), 54947 states have internal predecessors, (247654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54948 states to 54948 states and 247654 transitions. [2022-01-18 05:40:10,416 INFO L78 Accepts]: Start accepts. Automaton has 54948 states and 247654 transitions. Word has length 34 [2022-01-18 05:40:10,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:40:10,416 INFO L470 AbstractCegarLoop]: Abstraction has 54948 states and 247654 transitions. [2022-01-18 05:40:10,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:10,416 INFO L276 IsEmpty]: Start isEmpty. Operand 54948 states and 247654 transitions. [2022-01-18 05:40:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:40:10,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:40:10,618 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, 1, 1] [2022-01-18 05:40:10,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-01-18 05:40:10,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:10,819 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:40:10,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:40:10,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1621846571, now seen corresponding path program 14 times [2022-01-18 05:40:10,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:40:10,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980665475] [2022-01-18 05:40:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:40:10,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:40:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:40:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:10,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:40:10,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980665475] [2022-01-18 05:40:10,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980665475] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:40:10,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288395488] [2022-01-18 05:40:10,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:40:10,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:10,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:40:10,916 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:40:10,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 05:40:10,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:40:10,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:40:10,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:40:10,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:40:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:11,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:40:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:11,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288395488] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:40:11,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:40:11,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2022-01-18 05:40:11,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318268951] [2022-01-18 05:40:11,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:40:11,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 05:40:11,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:40:11,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 05:40:11,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2022-01-18 05:40:11,270 INFO L87 Difference]: Start difference. First operand 54948 states and 247654 transitions. Second operand has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 20 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:13,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:40:13,158 INFO L93 Difference]: Finished difference Result 124006 states and 531222 transitions. [2022-01-18 05:40:13,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 05:40:13,159 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 20 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:40:13,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:40:14,232 INFO L225 Difference]: With dead ends: 124006 [2022-01-18 05:40:14,232 INFO L226 Difference]: Without dead ends: 124006 [2022-01-18 05:40:14,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=652, Invalid=1798, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 05:40:14,233 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 562 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 05:40:14,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 654 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 05:40:14,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124006 states. [2022-01-18 05:40:16,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124006 to 56994. [2022-01-18 05:40:16,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56994 states, 56993 states have (on average 4.487621286824698) internal successors, (255763), 56993 states have internal predecessors, (255763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56994 states to 56994 states and 255763 transitions. [2022-01-18 05:40:17,439 INFO L78 Accepts]: Start accepts. Automaton has 56994 states and 255763 transitions. Word has length 36 [2022-01-18 05:40:17,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:40:17,440 INFO L470 AbstractCegarLoop]: Abstraction has 56994 states and 255763 transitions. [2022-01-18 05:40:17,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 20 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 56994 states and 255763 transitions. [2022-01-18 05:40:17,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:40:17,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:40:17,648 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, 1, 1] [2022-01-18 05:40:17,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-01-18 05:40:17,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:17,850 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:40:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:40:17,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2043305711, now seen corresponding path program 15 times [2022-01-18 05:40:17,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:40:17,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980080170] [2022-01-18 05:40:17,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:40:17,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:40:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:40:17,910 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:17,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:40:17,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980080170] [2022-01-18 05:40:17,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980080170] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:40:17,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537931451] [2022-01-18 05:40:17,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:40:17,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:17,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:40:17,912 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:40:17,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 05:40:17,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 05:40:17,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:40:17,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:40:17,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:40:18,113 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:18,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:40:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:18,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537931451] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:40:18,218 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:40:18,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 05:40:18,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179671678] [2022-01-18 05:40:18,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:40:18,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 05:40:18,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:40:18,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 05:40:18,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:40:18,219 INFO L87 Difference]: Start difference. First operand 56994 states and 255763 transitions. Second operand has 20 states, 20 states have (on average 3.4) internal successors, (68), 19 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:20,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:40:20,328 INFO L93 Difference]: Finished difference Result 148781 states and 646238 transitions. [2022-01-18 05:40:20,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 05:40:20,329 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 19 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:40:20,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:40:21,082 INFO L225 Difference]: With dead ends: 148781 [2022-01-18 05:40:21,082 INFO L226 Difference]: Without dead ends: 147463 [2022-01-18 05:40:21,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=562, Invalid=1508, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 05:40:21,083 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 861 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 05:40:21,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 499 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 05:40:21,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147463 states. [2022-01-18 05:40:24,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147463 to 80557. [2022-01-18 05:40:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80557 states, 80556 states have (on average 4.52723571180297) internal successors, (364696), 80556 states have internal predecessors, (364696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:25,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80557 states to 80557 states and 364696 transitions. [2022-01-18 05:40:25,268 INFO L78 Accepts]: Start accepts. Automaton has 80557 states and 364696 transitions. Word has length 36 [2022-01-18 05:40:25,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:40:25,269 INFO L470 AbstractCegarLoop]: Abstraction has 80557 states and 364696 transitions. [2022-01-18 05:40:25,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 19 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:25,269 INFO L276 IsEmpty]: Start isEmpty. Operand 80557 states and 364696 transitions. [2022-01-18 05:40:25,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:40:25,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:40:25,466 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, 1, 1] [2022-01-18 05:40:25,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-01-18 05:40:25,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-18 05:40:25,667 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:40:25,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:40:25,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1708986033, now seen corresponding path program 16 times [2022-01-18 05:40:25,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:40:25,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861722235] [2022-01-18 05:40:25,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:40:25,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:40:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:40:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:25,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:40:25,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861722235] [2022-01-18 05:40:25,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861722235] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:40:25,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903480523] [2022-01-18 05:40:25,721 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:40:25,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:25,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:40:25,722 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:40:25,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 05:40:25,746 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:40:25,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:40:25,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:40:25,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:40:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:25,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:40:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:26,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903480523] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:40:26,037 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:40:26,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2022-01-18 05:40:26,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267503514] [2022-01-18 05:40:26,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:40:26,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 05:40:26,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:40:26,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 05:40:26,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2022-01-18 05:40:26,038 INFO L87 Difference]: Start difference. First operand 80557 states and 364696 transitions. Second operand has 21 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:29,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:40:29,105 INFO L93 Difference]: Finished difference Result 185999 states and 812029 transitions. [2022-01-18 05:40:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 05:40:29,106 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 05:40:29,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:40:30,069 INFO L225 Difference]: With dead ends: 185999 [2022-01-18 05:40:30,069 INFO L226 Difference]: Without dead ends: 185979 [2022-01-18 05:40:30,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=880, Invalid=2200, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 05:40:30,070 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 744 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 05:40:30,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 725 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 05:40:30,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185979 states. [2022-01-18 05:40:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185979 to 102149. [2022-01-18 05:40:35,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102149 states, 102148 states have (on average 4.5491933273289735) internal successors, (464691), 102148 states have internal predecessors, (464691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:36,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102149 states to 102149 states and 464691 transitions. [2022-01-18 05:40:36,058 INFO L78 Accepts]: Start accepts. Automaton has 102149 states and 464691 transitions. Word has length 36 [2022-01-18 05:40:36,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:40:36,058 INFO L470 AbstractCegarLoop]: Abstraction has 102149 states and 464691 transitions. [2022-01-18 05:40:36,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:36,059 INFO L276 IsEmpty]: Start isEmpty. Operand 102149 states and 464691 transitions. [2022-01-18 05:40:36,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:40:36,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:40:36,282 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, 1, 1] [2022-01-18 05:40:36,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 05:40:36,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:36,482 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:40:36,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:40:36,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1061083381, now seen corresponding path program 17 times [2022-01-18 05:40:36,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:40:36,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621894730] [2022-01-18 05:40:36,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:40:36,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:40:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:40:36,529 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:36,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:40:36,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621894730] [2022-01-18 05:40:36,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621894730] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:40:36,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889390416] [2022-01-18 05:40:36,530 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:40:36,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:36,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:40:36,531 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:40:36,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 05:40:36,554 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 05:40:36,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:40:36,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:40:36,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:40:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:36,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:40:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:36,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889390416] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:40:36,825 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:40:36,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 19 [2022-01-18 05:40:36,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505681687] [2022-01-18 05:40:36,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:40:36,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 05:40:36,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:40:36,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 05:40:36,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:40:36,826 INFO L87 Difference]: Start difference. First operand 102149 states and 464691 transitions. Second operand has 20 states, 20 states have (on average 3.7) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:38,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:40:38,738 INFO L93 Difference]: Finished difference Result 140554 states and 618093 transitions. [2022-01-18 05:40:38,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 05:40:38,739 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:40:38,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:40:39,498 INFO L225 Difference]: With dead ends: 140554 [2022-01-18 05:40:39,499 INFO L226 Difference]: Without dead ends: 140250 [2022-01-18 05:40:39,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=539, Invalid=1267, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 05:40:39,499 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 442 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:40:39,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 389 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:40:39,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140250 states. [2022-01-18 05:40:43,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140250 to 98725. [2022-01-18 05:40:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98725 states, 98724 states have (on average 4.555366476236781) internal successors, (449724), 98724 states have internal predecessors, (449724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98725 states to 98725 states and 449724 transitions. [2022-01-18 05:40:44,364 INFO L78 Accepts]: Start accepts. Automaton has 98725 states and 449724 transitions. Word has length 36 [2022-01-18 05:40:44,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:40:44,364 INFO L470 AbstractCegarLoop]: Abstraction has 98725 states and 449724 transitions. [2022-01-18 05:40:44,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:44,364 INFO L276 IsEmpty]: Start isEmpty. Operand 98725 states and 449724 transitions. [2022-01-18 05:40:44,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:40:44,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:40:44,596 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, 1, 1] [2022-01-18 05:40:44,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 05:40:44,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:44,796 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:40:44,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:40:44,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1796828169, now seen corresponding path program 18 times [2022-01-18 05:40:44,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:40:44,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963565018] [2022-01-18 05:40:44,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:40:44,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:40:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:40:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:40:44,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:40:44,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963565018] [2022-01-18 05:40:44,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963565018] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:40:44,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774887502] [2022-01-18 05:40:44,845 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:40:44,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:44,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:40:44,846 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:40:44,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 05:40:44,870 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 05:40:44,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:40:44,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:40:44,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:40:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:45,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:40:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:45,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774887502] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:40:45,134 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:40:45,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 19 [2022-01-18 05:40:45,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881339834] [2022-01-18 05:40:45,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:40:45,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 05:40:45,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:40:45,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 05:40:45,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:40:45,135 INFO L87 Difference]: Start difference. First operand 98725 states and 449724 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:47,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:40:47,202 INFO L93 Difference]: Finished difference Result 157433 states and 697584 transitions. [2022-01-18 05:40:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 05:40:47,203 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 05:40:47,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:40:48,034 INFO L225 Difference]: With dead ends: 157433 [2022-01-18 05:40:48,035 INFO L226 Difference]: Without dead ends: 156538 [2022-01-18 05:40:48,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=445, Invalid=1115, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 05:40:48,035 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 532 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 05:40:48,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 500 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 05:40:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156538 states. [2022-01-18 05:40:52,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156538 to 110101. [2022-01-18 05:40:52,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110101 states, 110100 states have (on average 4.5832970027247955) internal successors, (504621), 110100 states have internal predecessors, (504621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110101 states to 110101 states and 504621 transitions. [2022-01-18 05:40:53,257 INFO L78 Accepts]: Start accepts. Automaton has 110101 states and 504621 transitions. Word has length 36 [2022-01-18 05:40:53,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:40:53,257 INFO L470 AbstractCegarLoop]: Abstraction has 110101 states and 504621 transitions. [2022-01-18 05:40:53,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:53,257 INFO L276 IsEmpty]: Start isEmpty. Operand 110101 states and 504621 transitions. [2022-01-18 05:40:53,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:40:53,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:40:53,488 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, 1, 1] [2022-01-18 05:40:53,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 05:40:53,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:53,689 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:40:53,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:40:53,689 INFO L85 PathProgramCache]: Analyzing trace with hash 54084015, now seen corresponding path program 19 times [2022-01-18 05:40:53,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:40:53,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502145461] [2022-01-18 05:40:53,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:40:53,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:40:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:40:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:53,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:40:53,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502145461] [2022-01-18 05:40:53,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502145461] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:40:53,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591598107] [2022-01-18 05:40:53,733 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:40:53,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:40:53,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:40:53,734 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:40:53,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 05:40:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:40:53,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:40:53,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:40:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:53,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:40:54,024 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:40:54,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591598107] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:40:54,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:40:54,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2022-01-18 05:40:54,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423685712] [2022-01-18 05:40:54,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:40:54,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 05:40:54,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:40:54,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 05:40:54,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:40:54,026 INFO L87 Difference]: Start difference. First operand 110101 states and 504621 transitions. Second operand has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:40:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:40:56,961 INFO L93 Difference]: Finished difference Result 192417 states and 850027 transitions. [2022-01-18 05:40:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 05:40:56,962 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:40:56,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:40:58,208 INFO L225 Difference]: With dead ends: 192417 [2022-01-18 05:40:58,209 INFO L226 Difference]: Without dead ends: 191725 [2022-01-18 05:40:58,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=593, Invalid=1477, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 05:40:58,210 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 682 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:40:58,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 456 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:40:58,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191725 states. [2022-01-18 05:41:03,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191725 to 118442. [2022-01-18 05:41:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118442 states, 118441 states have (on average 4.604208002296502) internal successors, (545327), 118441 states have internal predecessors, (545327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:41:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118442 states to 118442 states and 545327 transitions. [2022-01-18 05:41:04,380 INFO L78 Accepts]: Start accepts. Automaton has 118442 states and 545327 transitions. Word has length 36 [2022-01-18 05:41:04,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:41:04,380 INFO L470 AbstractCegarLoop]: Abstraction has 118442 states and 545327 transitions. [2022-01-18 05:41:04,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:41:04,380 INFO L276 IsEmpty]: Start isEmpty. Operand 118442 states and 545327 transitions. [2022-01-18 05:41:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:41:05,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:41:05,195 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, 1, 1] [2022-01-18 05:41:05,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 05:41:05,407 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,SelfDestructingSolverStorable27 [2022-01-18 05:41:05,407 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:41:05,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:41:05,408 INFO L85 PathProgramCache]: Analyzing trace with hash 40319953, now seen corresponding path program 20 times [2022-01-18 05:41:05,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:41:05,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471005713] [2022-01-18 05:41:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:41:05,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:41:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:41:05,462 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:41:05,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:41:05,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471005713] [2022-01-18 05:41:05,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471005713] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:41:05,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279290122] [2022-01-18 05:41:05,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:41:05,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:41:05,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:41:05,464 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:41:05,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 05:41:05,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:41:05,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:41:05,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:41:05,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:41:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:41:05,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:41:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:41:05,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279290122] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:41:05,796 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:41:05,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 05:41:05,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955280829] [2022-01-18 05:41:05,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:41:05,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 05:41:05,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:41:05,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 05:41:05,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2022-01-18 05:41:05,797 INFO L87 Difference]: Start difference. First operand 118442 states and 545327 transitions. Second operand has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:41:08,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:41:08,628 INFO L93 Difference]: Finished difference Result 238278 states and 1037671 transitions. [2022-01-18 05:41:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 05:41:08,628 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 05:41:08,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:41:10,573 INFO L225 Difference]: With dead ends: 238278 [2022-01-18 05:41:10,573 INFO L226 Difference]: Without dead ends: 238278 [2022-01-18 05:41:10,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=815, Invalid=2047, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 05:41:10,574 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 677 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 05:41:10,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 686 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 05:41:10,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238278 states. [2022-01-18 05:41:16,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238278 to 115584. [2022-01-18 05:41:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115584 states, 115583 states have (on average 4.562331830805569) internal successors, (527328), 115583 states have internal predecessors, (527328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:41:17,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115584 states to 115584 states and 527328 transitions. [2022-01-18 05:41:17,232 INFO L78 Accepts]: Start accepts. Automaton has 115584 states and 527328 transitions. Word has length 36 [2022-01-18 05:41:17,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:41:17,232 INFO L470 AbstractCegarLoop]: Abstraction has 115584 states and 527328 transitions. [2022-01-18 05:41:17,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:41:17,232 INFO L276 IsEmpty]: Start isEmpty. Operand 115584 states and 527328 transitions. [2022-01-18 05:41:17,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:41:17,446 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:41:17,446 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, 1, 1] [2022-01-18 05:41:17,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 05:41:17,646 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,SelfDestructingSolverStorable28 [2022-01-18 05:41:17,646 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:41:17,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:41:17,647 INFO L85 PathProgramCache]: Analyzing trace with hash 554582417, now seen corresponding path program 21 times [2022-01-18 05:41:17,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:41:17,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482192881] [2022-01-18 05:41:17,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:41:17,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:41:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:41:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:41:17,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:41:17,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482192881] [2022-01-18 05:41:17,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482192881] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:41:17,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486137684] [2022-01-18 05:41:17,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:41:17,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:41:17,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:41:17,696 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:41:17,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 05:41:17,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 05:41:17,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:41:17,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:41:17,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:41:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:41:17,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:41:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:41:17,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486137684] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:41:17,975 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:41:17,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2022-01-18 05:41:17,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924409282] [2022-01-18 05:41:17,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:41:17,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 05:41:17,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:41:17,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 05:41:17,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:41:17,976 INFO L87 Difference]: Start difference. First operand 115584 states and 527328 transitions. Second operand has 20 states, 20 states have (on average 3.7) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:41:20,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:41:20,451 INFO L93 Difference]: Finished difference Result 149434 states and 659887 transitions. [2022-01-18 05:41:20,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 05:41:20,452 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:41:20,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:41:21,477 INFO L225 Difference]: With dead ends: 149434 [2022-01-18 05:41:21,477 INFO L226 Difference]: Without dead ends: 149030 [2022-01-18 05:41:21,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=443, Invalid=1197, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 05:41:21,478 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 428 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 05:41:21,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 493 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 05:41:21,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149030 states. [2022-01-18 05:41:25,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149030 to 114434. [2022-01-18 05:41:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114434 states, 114433 states have (on average 4.564548687878497) internal successors, (522335), 114433 states have internal predecessors, (522335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:41:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114434 states to 114434 states and 522335 transitions. [2022-01-18 05:41:26,631 INFO L78 Accepts]: Start accepts. Automaton has 114434 states and 522335 transitions. Word has length 36 [2022-01-18 05:41:26,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:41:26,631 INFO L470 AbstractCegarLoop]: Abstraction has 114434 states and 522335 transitions. [2022-01-18 05:41:26,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:41:26,631 INFO L276 IsEmpty]: Start isEmpty. Operand 114434 states and 522335 transitions. [2022-01-18 05:41:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:41:26,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:41:26,881 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, 1, 1] [2022-01-18 05:41:26,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-01-18 05:41:27,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:41:27,092 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:41:27,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:41:27,092 INFO L85 PathProgramCache]: Analyzing trace with hash 13790191, now seen corresponding path program 22 times [2022-01-18 05:41:27,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:41:27,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351831859] [2022-01-18 05:41:27,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:41:27,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:41:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:41:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:41:27,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:41:27,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351831859] [2022-01-18 05:41:27,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351831859] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:41:27,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657728804] [2022-01-18 05:41:27,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:41:27,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:41:27,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:41:27,166 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:41:27,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 05:41:27,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:41:27,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:41:27,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:41:27,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:41:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:41:27,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:41:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:41:27,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657728804] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:41:27,535 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:41:27,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-01-18 05:41:27,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109982722] [2022-01-18 05:41:27,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:41:27,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 05:41:27,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:41:27,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 05:41:27,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-01-18 05:41:27,536 INFO L87 Difference]: Start difference. First operand 114434 states and 522335 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 20 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:41:31,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:41:31,642 INFO L93 Difference]: Finished difference Result 286904 states and 1270849 transitions. [2022-01-18 05:41:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 05:41:31,643 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 20 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:41:31,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:41:33,253 INFO L225 Difference]: With dead ends: 286904 [2022-01-18 05:41:33,253 INFO L226 Difference]: Without dead ends: 286904 [2022-01-18 05:41:33,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1361 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1165, Invalid=2741, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 05:41:33,254 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 929 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 05:41:33,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [929 Valid, 650 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 05:41:34,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286904 states. [2022-01-18 05:41:42,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286904 to 187390. [2022-01-18 05:41:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187390 states, 187389 states have (on average 4.617053295550966) internal successors, (865185), 187389 states have internal predecessors, (865185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:41:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187390 states to 187390 states and 865185 transitions. [2022-01-18 05:41:43,750 INFO L78 Accepts]: Start accepts. Automaton has 187390 states and 865185 transitions. Word has length 36 [2022-01-18 05:41:43,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:41:43,750 INFO L470 AbstractCegarLoop]: Abstraction has 187390 states and 865185 transitions. [2022-01-18 05:41:43,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 20 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:41:43,750 INFO L276 IsEmpty]: Start isEmpty. Operand 187390 states and 865185 transitions. [2022-01-18 05:41:44,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:41:44,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:41:44,756 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, 1, 1] [2022-01-18 05:41:44,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 05:41:44,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:41:44,964 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:41:44,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:41:44,966 INFO L85 PathProgramCache]: Analyzing trace with hash -766980923, now seen corresponding path program 23 times [2022-01-18 05:41:44,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:41:44,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493079325] [2022-01-18 05:41:44,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:41:44,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:41:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:41:45,021 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:41:45,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:41:45,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493079325] [2022-01-18 05:41:45,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493079325] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:41:45,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174706234] [2022-01-18 05:41:45,022 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:41:45,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:41:45,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:41:45,032 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:41:45,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 05:41:45,059 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 05:41:45,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:41:45,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:41:45,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:41:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:41:45,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:41:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:41:45,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174706234] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:41:45,368 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:41:45,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 19 [2022-01-18 05:41:45,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334211188] [2022-01-18 05:41:45,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:41:45,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 05:41:45,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:41:45,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 05:41:45,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:41:45,368 INFO L87 Difference]: Start difference. First operand 187390 states and 865185 transitions. Second operand has 20 states, 20 states have (on average 3.7) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:41:48,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:41:48,335 INFO L93 Difference]: Finished difference Result 254683 states and 1137807 transitions. [2022-01-18 05:41:48,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 05:41:48,336 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:41:48,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:41:50,570 INFO L225 Difference]: With dead ends: 254683 [2022-01-18 05:41:50,570 INFO L226 Difference]: Without dead ends: 254373 [2022-01-18 05:41:50,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=724, Invalid=1726, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 05:41:50,571 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 642 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 05:41:50,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 511 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 05:41:50,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254373 states. [2022-01-18 05:41:57,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254373 to 187000. [2022-01-18 05:41:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187000 states, 186999 states have (on average 4.611853539323739) internal successors, (862412), 186999 states have internal predecessors, (862412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:41:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187000 states to 187000 states and 862412 transitions. [2022-01-18 05:41:59,813 INFO L78 Accepts]: Start accepts. Automaton has 187000 states and 862412 transitions. Word has length 36 [2022-01-18 05:41:59,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:41:59,813 INFO L470 AbstractCegarLoop]: Abstraction has 187000 states and 862412 transitions. [2022-01-18 05:41:59,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:41:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 187000 states and 862412 transitions. [2022-01-18 05:42:00,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:42:00,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:42:00,154 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, 1, 1] [2022-01-18 05:42:00,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 05:42:00,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:42:00,355 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:42:00,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:42:00,356 INFO L85 PathProgramCache]: Analyzing trace with hash 439890227, now seen corresponding path program 24 times [2022-01-18 05:42:00,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:42:00,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468569511] [2022-01-18 05:42:00,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:42:00,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:42:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:42:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:42:00,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:42:00,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468569511] [2022-01-18 05:42:00,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468569511] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:42:00,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079779561] [2022-01-18 05:42:00,414 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:42:00,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:42:00,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:42:00,415 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:42:00,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 05:42:00,454 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 05:42:00,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:42:00,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:42:00,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:42:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:42:00,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:42:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:42:00,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079779561] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:42:00,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:42:00,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2022-01-18 05:42:00,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502856592] [2022-01-18 05:42:00,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:42:00,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 05:42:00,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:42:00,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 05:42:00,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:42:00,745 INFO L87 Difference]: Start difference. First operand 187000 states and 862412 transitions. Second operand has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:42:04,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:42:04,454 INFO L93 Difference]: Finished difference Result 283294 states and 1263502 transitions. [2022-01-18 05:42:04,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 05:42:04,454 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:42:04,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:42:06,779 INFO L225 Difference]: With dead ends: 283294 [2022-01-18 05:42:06,779 INFO L226 Difference]: Without dead ends: 282784 [2022-01-18 05:42:06,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=728, Invalid=1722, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 05:42:06,780 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 688 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 05:42:06,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 509 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 05:42:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282784 states. [2022-01-18 05:42:14,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282784 to 207055. [2022-01-18 05:42:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207055 states, 207054 states have (on average 4.6254455359471445) internal successors, (957717), 207054 states have internal predecessors, (957717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:42:16,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207055 states to 207055 states and 957717 transitions. [2022-01-18 05:42:16,783 INFO L78 Accepts]: Start accepts. Automaton has 207055 states and 957717 transitions. Word has length 36 [2022-01-18 05:42:16,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:42:16,783 INFO L470 AbstractCegarLoop]: Abstraction has 207055 states and 957717 transitions. [2022-01-18 05:42:16,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:42:16,783 INFO L276 IsEmpty]: Start isEmpty. Operand 207055 states and 957717 transitions. [2022-01-18 05:42:17,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 05:42:17,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:42:17,908 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, 1, 1] [2022-01-18 05:42:17,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 05:42:18,123 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,SelfDestructingSolverStorable32 [2022-01-18 05:42:18,123 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:42:18,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:42:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash -381009233, now seen corresponding path program 25 times [2022-01-18 05:42:18,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:42:18,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149984256] [2022-01-18 05:42:18,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:42:18,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:42:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:42:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:42:18,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:42:18,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149984256] [2022-01-18 05:42:18,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149984256] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:42:18,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114089414] [2022-01-18 05:42:18,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:42:18,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:42:18,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:42:18,174 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:42:18,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 05:42:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:42:18,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 05:42:18,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:42:18,343 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:42:18,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:42:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:42:18,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114089414] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:42:18,442 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:42:18,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 05:42:18,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538507242] [2022-01-18 05:42:18,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:42:18,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 05:42:18,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:42:18,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 05:42:18,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-01-18 05:42:18,443 INFO L87 Difference]: Start difference. First operand 207055 states and 957717 transitions. Second operand has 20 states, 20 states have (on average 3.55) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:42:21,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:42:21,652 INFO L93 Difference]: Finished difference Result 290122 states and 1295399 transitions. [2022-01-18 05:42:21,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 05:42:21,653 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.55) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 05:42:21,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:42:24,022 INFO L225 Difference]: With dead ends: 290122 [2022-01-18 05:42:24,022 INFO L226 Difference]: Without dead ends: 289652 [2022-01-18 05:42:24,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=737, Invalid=1813, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 05:42:24,023 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 763 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 05:42:24,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 624 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 05:42:24,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289652 states. [2022-01-18 05:42:33,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289652 to 218816. [2022-01-18 05:42:33,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218816 states, 218815 states have (on average 4.624737792198889) internal successors, (1011962), 218815 states have internal predecessors, (1011962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:42:35,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218816 states to 218816 states and 1011962 transitions. [2022-01-18 05:42:35,886 INFO L78 Accepts]: Start accepts. Automaton has 218816 states and 1011962 transitions. Word has length 36 [2022-01-18 05:42:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:42:35,886 INFO L470 AbstractCegarLoop]: Abstraction has 218816 states and 1011962 transitions. [2022-01-18 05:42:35,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.55) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:42:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 218816 states and 1011962 transitions. [2022-01-18 05:42:36,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 05:42:36,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:42:36,574 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:42:36,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 05:42:36,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-01-18 05:42:36,787 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:42:36,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:42:36,788 INFO L85 PathProgramCache]: Analyzing trace with hash 490568557, now seen corresponding path program 26 times [2022-01-18 05:42:36,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:42:36,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138092373] [2022-01-18 05:42:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:42:36,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:42:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:42:36,852 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:42:36,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:42:36,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138092373] [2022-01-18 05:42:36,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138092373] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:42:36,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588190602] [2022-01-18 05:42:36,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:42:36,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:42:36,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:42:36,858 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:42:36,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 05:42:36,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:42:36,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:42:36,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 05:42:36,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:42:37,132 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:42:37,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:42:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:42:37,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588190602] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:42:37,284 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:42:37,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 14 [2022-01-18 05:42:37,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983166532] [2022-01-18 05:42:37,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:42:37,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:42:37,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:42:37,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:42:37,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:42:37,285 INFO L87 Difference]: Start difference. First operand 218816 states and 1011962 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:42:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:42:41,032 INFO L93 Difference]: Finished difference Result 275767 states and 1260077 transitions. [2022-01-18 05:42:41,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 05:42:41,032 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-18 05:42:41,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:42:42,678 INFO L225 Difference]: With dead ends: 275767 [2022-01-18 05:42:42,679 INFO L226 Difference]: Without dead ends: 274998 [2022-01-18 05:42:42,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:42:42,679 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 240 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 05:42:42,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 772 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 05:42:43,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274998 states. [2022-01-18 05:42:51,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274998 to 238003. [2022-01-18 05:42:51,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238003 states, 238002 states have (on average 4.6232090486634565) internal successors, (1100333), 238002 states have internal predecessors, (1100333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:42:53,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238003 states to 238003 states and 1100333 transitions. [2022-01-18 05:42:53,722 INFO L78 Accepts]: Start accepts. Automaton has 238003 states and 1100333 transitions. Word has length 38 [2022-01-18 05:42:53,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:42:53,722 INFO L470 AbstractCegarLoop]: Abstraction has 238003 states and 1100333 transitions. [2022-01-18 05:42:53,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:42:53,722 INFO L276 IsEmpty]: Start isEmpty. Operand 238003 states and 1100333 transitions. [2022-01-18 05:42:54,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 05:42:54,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:42:54,862 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:42:54,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 05:42:55,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-01-18 05:42:55,087 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:42:55,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:42:55,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2064971429, now seen corresponding path program 27 times [2022-01-18 05:42:55,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:42:55,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555242041] [2022-01-18 05:42:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:42:55,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:42:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:42:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:42:55,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:42:55,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555242041] [2022-01-18 05:42:55,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555242041] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:42:55,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156353530] [2022-01-18 05:42:55,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:42:55,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:42:55,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:42:55,141 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:42:55,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 05:42:55,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 05:42:55,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:42:55,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 05:42:55,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:42:55,384 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:42:55,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:42:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:42:55,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156353530] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:42:55,499 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:42:55,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 14 [2022-01-18 05:42:55,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099944602] [2022-01-18 05:42:55,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:42:55,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:42:55,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:42:55,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:42:55,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:42:55,500 INFO L87 Difference]: Start difference. First operand 238003 states and 1100333 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:43:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:43:00,256 INFO L93 Difference]: Finished difference Result 394201 states and 1792824 transitions. [2022-01-18 05:43:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 05:43:00,256 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-18 05:43:00,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:43:03,452 INFO L225 Difference]: With dead ends: 394201 [2022-01-18 05:43:03,452 INFO L226 Difference]: Without dead ends: 392734 [2022-01-18 05:43:03,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-01-18 05:43:03,453 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 255 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 05:43:03,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 884 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 05:43:03,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392734 states. [2022-01-18 05:43:15,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392734 to 306278. [2022-01-18 05:43:16,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306278 states, 306277 states have (on average 4.624082121739471) internal successors, (1416250), 306277 states have internal predecessors, (1416250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:43:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306278 states to 306278 states and 1416250 transitions. [2022-01-18 05:43:19,458 INFO L78 Accepts]: Start accepts. Automaton has 306278 states and 1416250 transitions. Word has length 38 [2022-01-18 05:43:19,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:43:19,458 INFO L470 AbstractCegarLoop]: Abstraction has 306278 states and 1416250 transitions. [2022-01-18 05:43:19,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:43:19,458 INFO L276 IsEmpty]: Start isEmpty. Operand 306278 states and 1416250 transitions. [2022-01-18 05:43:20,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 05:43:20,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:43:20,149 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, 1, 1, 1, 1, 1, 1] [2022-01-18 05:43:20,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 05:43:20,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:43:20,356 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:43:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:43:20,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1139005671, now seen corresponding path program 1 times [2022-01-18 05:43:20,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:43:20,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533747706] [2022-01-18 05:43:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:43:20,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:43:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:43:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:43:20,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:43:20,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533747706] [2022-01-18 05:43:20,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533747706] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:43:20,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340916050] [2022-01-18 05:43:20,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:43:20,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:43:20,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:43:20,411 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:43:20,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 05:43:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:43:20,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 05:43:20,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:43:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:43:20,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:43:20,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:43:20,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340916050] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:43:20,817 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:43:20,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 17 [2022-01-18 05:43:20,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057723368] [2022-01-18 05:43:20,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:43:20,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 05:43:20,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:43:20,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 05:43:20,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 05:43:20,818 INFO L87 Difference]: Start difference. First operand 306278 states and 1416250 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:43:29,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:43:29,275 INFO L93 Difference]: Finished difference Result 586179 states and 2672233 transitions. [2022-01-18 05:43:29,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 05:43:29,275 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-18 05:43:29,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:43:34,558 INFO L225 Difference]: With dead ends: 586179 [2022-01-18 05:43:34,558 INFO L226 Difference]: Without dead ends: 583951 [2022-01-18 05:43:34,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-01-18 05:43:34,559 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 284 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:43:34,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 928 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:43:36,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583951 states. [2022-01-18 05:43:54,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583951 to 425975. [2022-01-18 05:43:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425975 states, 425974 states have (on average 4.631465770211327) internal successors, (1972884), 425974 states have internal predecessors, (1972884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:43:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425975 states to 425975 states and 1972884 transitions. [2022-01-18 05:43:58,996 INFO L78 Accepts]: Start accepts. Automaton has 425975 states and 1972884 transitions. Word has length 38 [2022-01-18 05:43:58,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:43:58,996 INFO L470 AbstractCegarLoop]: Abstraction has 425975 states and 1972884 transitions. [2022-01-18 05:43:58,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:43:58,996 INFO L276 IsEmpty]: Start isEmpty. Operand 425975 states and 1972884 transitions. [2022-01-18 05:44:00,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 05:44:00,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:44:00,450 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:44:00,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 05:44:00,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 05:44:00,650 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:44:00,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:44:00,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1995949741, now seen corresponding path program 28 times [2022-01-18 05:44:00,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:44:00,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571926956] [2022-01-18 05:44:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:44:00,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:44:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:44:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:44:00,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:44:00,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571926956] [2022-01-18 05:44:00,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571926956] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:44:00,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006938320] [2022-01-18 05:44:00,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:44:00,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:44:00,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:44:00,700 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:44:00,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 05:44:00,726 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:44:00,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:44:00,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 05:44:00,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:44:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:44:00,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:44:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:44:01,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006938320] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:44:01,070 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:44:01,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 14 [2022-01-18 05:44:01,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503643613] [2022-01-18 05:44:01,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:44:01,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 05:44:01,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:44:01,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 05:44:01,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:44:01,071 INFO L87 Difference]: Start difference. First operand 425975 states and 1972884 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:44:07,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:44:07,712 INFO L93 Difference]: Finished difference Result 560533 states and 2590081 transitions. [2022-01-18 05:44:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 05:44:07,712 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-18 05:44:07,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:44:13,005 INFO L225 Difference]: With dead ends: 560533 [2022-01-18 05:44:13,006 INFO L226 Difference]: Without dead ends: 559708 [2022-01-18 05:44:13,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-01-18 05:44:13,006 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 205 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 05:44:13,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1131 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 05:44:13,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559708 states. [2022-01-18 05:44:34,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559708 to 545995. [2022-01-18 05:44:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545995 states, 545994 states have (on average 4.646322120755905) internal successors, (2536864), 545994 states have internal predecessors, (2536864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:44:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545995 states to 545995 states and 2536864 transitions. [2022-01-18 05:44:42,325 INFO L78 Accepts]: Start accepts. Automaton has 545995 states and 2536864 transitions. Word has length 38 [2022-01-18 05:44:42,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:44:42,325 INFO L470 AbstractCegarLoop]: Abstraction has 545995 states and 2536864 transitions. [2022-01-18 05:44:42,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:44:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 545995 states and 2536864 transitions. [2022-01-18 05:44:44,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-18 05:44:44,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:44:44,578 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:44:44,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-01-18 05:44:44,791 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,SelfDestructingSolverStorable37 [2022-01-18 05:44:44,791 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:44:44,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:44:44,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1336184725, now seen corresponding path program 29 times [2022-01-18 05:44:44,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:44:44,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785009659] [2022-01-18 05:44:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:44:44,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:44:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:44:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:44:45,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:44:45,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785009659] [2022-01-18 05:44:45,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785009659] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:44:45,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168246596] [2022-01-18 05:44:45,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:44:45,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:44:45,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:44:45,518 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:44:45,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 05:44:45,613 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 05:44:45,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:44:45,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 05:44:45,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:44:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:44:45,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:44:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:44:46,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168246596] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:44:46,016 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:44:46,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2022-01-18 05:44:46,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738358518] [2022-01-18 05:44:46,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:44:46,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 05:44:46,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:44:46,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 05:44:46,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2022-01-18 05:44:46,017 INFO L87 Difference]: Start difference. First operand 545995 states and 2536864 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 25 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:45:00,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:45:00,234 INFO L93 Difference]: Finished difference Result 845683 states and 3804802 transitions. [2022-01-18 05:45:00,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 05:45:00,234 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 25 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-01-18 05:45:00,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:45:12,963 INFO L225 Difference]: With dead ends: 845683 [2022-01-18 05:45:12,963 INFO L226 Difference]: Without dead ends: 845683 [2022-01-18 05:45:12,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1274, Invalid=3696, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 05:45:12,965 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 663 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 05:45:12,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 1108 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 05:45:14,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845683 states. [2022-01-18 05:45:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845683 to 534782. [2022-01-18 05:45:43,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534782 states, 534781 states have (on average 4.638676392766385) internal successors, (2480676), 534781 states have internal predecessors, (2480676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:45:48,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534782 states to 534782 states and 2480676 transitions. [2022-01-18 05:45:48,179 INFO L78 Accepts]: Start accepts. Automaton has 534782 states and 2480676 transitions. Word has length 40 [2022-01-18 05:45:48,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:45:48,180 INFO L470 AbstractCegarLoop]: Abstraction has 534782 states and 2480676 transitions. [2022-01-18 05:45:48,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 25 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:45:48,180 INFO L276 IsEmpty]: Start isEmpty. Operand 534782 states and 2480676 transitions. [2022-01-18 05:45:49,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-18 05:45:49,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:45:49,998 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:45:50,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 05:45:50,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 05:45:50,198 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:45:50,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:45:50,199 INFO L85 PathProgramCache]: Analyzing trace with hash -40877009, now seen corresponding path program 30 times [2022-01-18 05:45:50,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:45:50,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969106972] [2022-01-18 05:45:50,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:45:50,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:45:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:45:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:45:50,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:45:50,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969106972] [2022-01-18 05:45:50,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969106972] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:45:50,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244496854] [2022-01-18 05:45:50,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:45:50,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:45:50,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:45:50,270 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:45:50,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 05:45:50,299 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 05:45:50,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:45:50,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 05:45:50,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:45:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:45:50,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:45:50,643 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:45:50,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244496854] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:45:50,643 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:45:50,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 05:45:50,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109170569] [2022-01-18 05:45:50,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:45:50,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 05:45:50,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:45:50,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 05:45:50,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2022-01-18 05:45:50,644 INFO L87 Difference]: Start difference. First operand 534782 states and 2480676 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 24 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:46:09,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:46:09,117 INFO L93 Difference]: Finished difference Result 1136355 states and 5157666 transitions. [2022-01-18 05:46:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 05:46:09,117 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 24 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-01-18 05:46:09,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:46:19,167 INFO L225 Difference]: With dead ends: 1136355 [2022-01-18 05:46:19,167 INFO L226 Difference]: Without dead ends: 1133906 [2022-01-18 05:46:19,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1753 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1544, Invalid=4308, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 05:46:19,169 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 1445 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 05:46:19,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1445 Valid, 817 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 05:46:21,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133906 states. [2022-01-18 05:47:06,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133906 to 706666. [2022-01-18 05:47:09,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706666 states, 706665 states have (on average 4.660015707584216) internal successors, (3293070), 706665 states have internal predecessors, (3293070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:47:16,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706666 states to 706666 states and 3293070 transitions. [2022-01-18 05:47:16,731 INFO L78 Accepts]: Start accepts. Automaton has 706666 states and 3293070 transitions. Word has length 40 [2022-01-18 05:47:16,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:47:16,732 INFO L470 AbstractCegarLoop]: Abstraction has 706666 states and 3293070 transitions. [2022-01-18 05:47:16,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 24 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:47:16,732 INFO L276 IsEmpty]: Start isEmpty. Operand 706666 states and 3293070 transitions. [2022-01-18 05:47:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-18 05:47:19,919 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:47:19,919 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:47:19,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 05:47:20,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 05:47:20,127 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 05:47:20,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:47:20,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1114761423, now seen corresponding path program 31 times [2022-01-18 05:47:20,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:47:20,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174682702] [2022-01-18 05:47:20,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:47:20,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:47:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:47:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:47:20,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:47:20,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174682702] [2022-01-18 05:47:20,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174682702] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:47:20,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333899848] [2022-01-18 05:47:20,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:47:20,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:47:20,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:47:20,214 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:47:20,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 05:47:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:47:20,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 05:47:20,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:47:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:47:20,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:47:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:47:20,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333899848] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:47:20,727 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:47:20,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 25 [2022-01-18 05:47:20,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395073446] [2022-01-18 05:47:20,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:47:20,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 05:47:20,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:47:20,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 05:47:20,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2022-01-18 05:47:20,728 INFO L87 Difference]: Start difference. First operand 706666 states and 3293070 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)