/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 17:42:45,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 17:42:45,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 17:42:45,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 17:42:45,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-01 17:42:45,330 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 17:42:45,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 17:42:45,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 17:42:45,331 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 17:42:45,332 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 17:42:45,332 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 17:42:45,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 17:42:45,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 17:42:45,332 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 17:42:45,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 17:42:45,333 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 17:42:45,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 17:42:45,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 17:42:45,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 17:42:45,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 17:42:45,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 17:42:45,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 17:42:45,334 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 17:42:45,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 17:42:45,334 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 17:42:45,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 17:42:45,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 17:42:45,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 17:42:45,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 17:42:45,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 17:42:45,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:42:45,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 17:42:45,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 17:42:45,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 17:42:45,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 17:42:45,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 17:42:45,336 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 17:42:45,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 17:42:45,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 17:42:45,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 17:42:45,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 17:42:45,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 17:42:45,548 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-01 17:42:45,549 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-01 17:42:45,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl [2022-03-01 17:42:45,550 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl' [2022-03-01 17:42:45,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 17:42:45,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-01 17:42:45,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 17:42:45,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 17:42:45,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 17:42:45,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:42:45" (1/1) ... [2022-03-01 17:42:45,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:42:45" (1/1) ... [2022-03-01 17:42:45,588 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-01 17:42:45,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 17:42:45,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 17:42:45,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 17:42:45,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 17:42:45,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:42:45" (1/1) ... [2022-03-01 17:42:45,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:42:45" (1/1) ... [2022-03-01 17:42:45,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:42:45" (1/1) ... [2022-03-01 17:42:45,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:42:45" (1/1) ... [2022-03-01 17:42:45,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:42:45" (1/1) ... [2022-03-01 17:42:45,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:42:45" (1/1) ... [2022-03-01 17:42:45,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:42:45" (1/1) ... [2022-03-01 17:42:45,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 17:42:45,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 17:42:45,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 17:42:45,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 17:42:45,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:42:45" (1/1) ... [2022-03-01 17:42:45,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:42:45,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:42:45,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 17:42:45,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 17:42:45,659 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-01 17:42:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 17:42:45,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 17:42:45,659 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-01 17:42:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 17:42:45,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 17:42:45,659 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-01 17:42:45,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 17:42:45,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 17:42:45,660 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-01 17:42:45,660 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-01 17:42:45,660 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-01 17:42:45,660 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 17:42:45,695 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 17:42:45,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 17:42:45,760 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 17:42:45,765 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 17:42:45,765 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-01 17:42:45,766 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:42:45 BoogieIcfgContainer [2022-03-01 17:42:45,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 17:42:45,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 17:42:45,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 17:42:45,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 17:42:45,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:42:45" (1/2) ... [2022-03-01 17:42:45,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f6a621 and model type lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 05:42:45, skipping insertion in model container [2022-03-01 17:42:45,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:42:45" (2/2) ... [2022-03-01 17:42:45,787 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.wvr.bpl [2022-03-01 17:42:45,791 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 17:42:45,791 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 17:42:45,792 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 17:42:45,792 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 17:42:45,832 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-01 17:42:45,896 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 17:42:45,901 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 17:42:45,901 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-01 17:42:45,910 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 41 transitions, 106 flow [2022-03-01 17:42:45,980 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 673 states, 672 states have (on average 2.5863095238095237) internal successors, (1738), 672 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 673 states, 672 states have (on average 2.5863095238095237) internal successors, (1738), 672 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:45,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:46,000 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:46,000 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, 1, 1, 1, 1] [2022-03-01 17:42:46,001 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:46,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:46,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1119940819, now seen corresponding path program 1 times [2022-03-01 17:42:46,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:46,010 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541355377] [2022-03-01 17:42:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:46,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:46,239 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:46,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541355377] [2022-03-01 17:42:46,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541355377] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:46,239 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:46,239 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:42:46,240 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540273605] [2022-03-01 17:42:46,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:46,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:42:46,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:46,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:42:46,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:42:46,289 INFO L87 Difference]: Start difference. First operand has 673 states, 672 states have (on average 2.5863095238095237) internal successors, (1738), 672 states have internal predecessors, (1738), 0 states have call successors, (0), 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 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:46,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:46,574 INFO L93 Difference]: Finished difference Result 998 states and 2445 transitions. [2022-03-01 17:42:46,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 17:42:46,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:46,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:46,593 INFO L225 Difference]: With dead ends: 998 [2022-03-01 17:42:46,594 INFO L226 Difference]: Without dead ends: 923 [2022-03-01 17:42:46,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-03-01 17:42:46,601 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 111 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:46,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 434 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:46,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2022-03-01 17:42:46,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 687. [2022-03-01 17:42:46,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.564139941690962) internal successors, (1759), 686 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:46,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1759 transitions. [2022-03-01 17:42:46,662 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1759 transitions. Word has length 36 [2022-03-01 17:42:46,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:46,662 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1759 transitions. [2022-03-01 17:42:46,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:46,663 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1759 transitions. [2022-03-01 17:42:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:46,666 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:46,666 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, 1, 1, 1, 1] [2022-03-01 17:42:46,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 17:42:46,667 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:46,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:46,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1520634161, now seen corresponding path program 2 times [2022-03-01 17:42:46,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:46,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740020037] [2022-03-01 17:42:46,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:46,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:46,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:46,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740020037] [2022-03-01 17:42:46,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740020037] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:46,738 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:46,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-01 17:42:46,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201658632] [2022-03-01 17:42:46,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:46,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:42:46,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:46,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:42:46,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:42:46,742 INFO L87 Difference]: Start difference. First operand 687 states and 1759 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:46,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:46,877 INFO L93 Difference]: Finished difference Result 1384 states and 3517 transitions. [2022-03-01 17:42:46,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 17:42:46,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:46,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:46,883 INFO L225 Difference]: With dead ends: 1384 [2022-03-01 17:42:46,883 INFO L226 Difference]: Without dead ends: 1324 [2022-03-01 17:42:46,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-01 17:42:46,889 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 118 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:46,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 216 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:46,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2022-03-01 17:42:46,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 755. [2022-03-01 17:42:46,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 754 states have (on average 2.5450928381962865) internal successors, (1919), 754 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:46,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1919 transitions. [2022-03-01 17:42:46,929 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1919 transitions. Word has length 36 [2022-03-01 17:42:46,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:46,929 INFO L470 AbstractCegarLoop]: Abstraction has 755 states and 1919 transitions. [2022-03-01 17:42:46,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:46,930 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1919 transitions. [2022-03-01 17:42:46,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:46,932 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:46,932 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, 1, 1, 1, 1] [2022-03-01 17:42:46,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 17:42:46,934 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:46,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:46,936 INFO L85 PathProgramCache]: Analyzing trace with hash -565642385, now seen corresponding path program 3 times [2022-03-01 17:42:46,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:46,937 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992793999] [2022-03-01 17:42:46,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:46,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:46,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:46,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992793999] [2022-03-01 17:42:46,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992793999] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:46,985 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:46,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:42:46,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649725475] [2022-03-01 17:42:46,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:46,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 17:42:46,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:46,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 17:42:46,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:42:46,987 INFO L87 Difference]: Start difference. First operand 755 states and 1919 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:47,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:47,003 INFO L93 Difference]: Finished difference Result 711 states and 1782 transitions. [2022-03-01 17:42:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 17:42:47,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:47,006 INFO L225 Difference]: With dead ends: 711 [2022-03-01 17:42:47,006 INFO L226 Difference]: Without dead ends: 711 [2022-03-01 17:42:47,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:42:47,012 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 13 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:47,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 66 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:42:47,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-03-01 17:42:47,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2022-03-01 17:42:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 2.5098591549295777) internal successors, (1782), 710 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1782 transitions. [2022-03-01 17:42:47,030 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1782 transitions. Word has length 36 [2022-03-01 17:42:47,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:47,030 INFO L470 AbstractCegarLoop]: Abstraction has 711 states and 1782 transitions. [2022-03-01 17:42:47,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:47,031 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1782 transitions. [2022-03-01 17:42:47,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:47,034 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:47,034 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, 1, 1, 1, 1] [2022-03-01 17:42:47,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 17:42:47,035 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:47,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash 780792771, now seen corresponding path program 4 times [2022-03-01 17:42:47,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:47,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466324563] [2022-03-01 17:42:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:47,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:47,097 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:47,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466324563] [2022-03-01 17:42:47,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466324563] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:47,098 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:47,098 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:42:47,098 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357472940] [2022-03-01 17:42:47,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:47,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:42:47,098 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:47,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:42:47,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:42:47,099 INFO L87 Difference]: Start difference. First operand 711 states and 1782 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:47,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:47,222 INFO L93 Difference]: Finished difference Result 1037 states and 2486 transitions. [2022-03-01 17:42:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 17:42:47,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:47,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:47,226 INFO L225 Difference]: With dead ends: 1037 [2022-03-01 17:42:47,226 INFO L226 Difference]: Without dead ends: 946 [2022-03-01 17:42:47,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-03-01 17:42:47,230 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 106 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:47,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 443 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:47,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-03-01 17:42:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 725. [2022-03-01 17:42:47,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 2.4903314917127073) internal successors, (1803), 724 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:47,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1803 transitions. [2022-03-01 17:42:47,248 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1803 transitions. Word has length 36 [2022-03-01 17:42:47,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:47,249 INFO L470 AbstractCegarLoop]: Abstraction has 725 states and 1803 transitions. [2022-03-01 17:42:47,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:47,250 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1803 transitions. [2022-03-01 17:42:47,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:47,251 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:47,251 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, 1, 1, 1, 1] [2022-03-01 17:42:47,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-01 17:42:47,251 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:47,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:47,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1585435705, now seen corresponding path program 5 times [2022-03-01 17:42:47,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:47,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775383119] [2022-03-01 17:42:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:47,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:47,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:47,350 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:47,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775383119] [2022-03-01 17:42:47,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775383119] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:47,350 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:47,350 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-01 17:42:47,350 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578455278] [2022-03-01 17:42:47,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:47,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-01 17:42:47,350 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:47,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-01 17:42:47,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:42:47,351 INFO L87 Difference]: Start difference. First operand 725 states and 1803 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:47,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:47,525 INFO L93 Difference]: Finished difference Result 1727 states and 4287 transitions. [2022-03-01 17:42:47,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 17:42:47,526 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:47,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:47,533 INFO L225 Difference]: With dead ends: 1727 [2022-03-01 17:42:47,533 INFO L226 Difference]: Without dead ends: 1715 [2022-03-01 17:42:47,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-03-01 17:42:47,536 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 205 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:47,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 303 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:47,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2022-03-01 17:42:47,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 819. [2022-03-01 17:42:47,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 2.488997555012225) internal successors, (2036), 818 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:47,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2036 transitions. [2022-03-01 17:42:47,580 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2036 transitions. Word has length 36 [2022-03-01 17:42:47,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:47,580 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 2036 transitions. [2022-03-01 17:42:47,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:47,580 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2036 transitions. [2022-03-01 17:42:47,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:47,582 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:47,582 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, 1, 1, 1, 1] [2022-03-01 17:42:47,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-01 17:42:47,582 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:47,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:47,583 INFO L85 PathProgramCache]: Analyzing trace with hash 569379897, now seen corresponding path program 6 times [2022-03-01 17:42:47,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:47,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992343022] [2022-03-01 17:42:47,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:47,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:47,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:47,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:47,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992343022] [2022-03-01 17:42:47,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992343022] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:47,691 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:47,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-01 17:42:47,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731863765] [2022-03-01 17:42:47,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:47,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-01 17:42:47,691 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:47,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-01 17:42:47,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:42:47,692 INFO L87 Difference]: Start difference. First operand 819 states and 2036 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:47,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:47,830 INFO L93 Difference]: Finished difference Result 1666 states and 4109 transitions. [2022-03-01 17:42:47,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 17:42:47,830 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:47,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:47,836 INFO L225 Difference]: With dead ends: 1666 [2022-03-01 17:42:47,836 INFO L226 Difference]: Without dead ends: 1638 [2022-03-01 17:42:47,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-03-01 17:42:47,837 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 167 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:47,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 292 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:47,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2022-03-01 17:42:47,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 799. [2022-03-01 17:42:47,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 798 states have (on average 2.4862155388471177) internal successors, (1984), 798 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:47,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1984 transitions. [2022-03-01 17:42:47,857 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1984 transitions. Word has length 36 [2022-03-01 17:42:47,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:47,857 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1984 transitions. [2022-03-01 17:42:47,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:47,858 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1984 transitions. [2022-03-01 17:42:47,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:47,859 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:47,859 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, 1, 1, 1, 1] [2022-03-01 17:42:47,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 17:42:47,860 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:47,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:47,860 INFO L85 PathProgramCache]: Analyzing trace with hash -818505189, now seen corresponding path program 7 times [2022-03-01 17:42:47,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:47,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230081496] [2022-03-01 17:42:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:47,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:47,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:47,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230081496] [2022-03-01 17:42:47,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230081496] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:47,923 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:47,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-01 17:42:47,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251958598] [2022-03-01 17:42:47,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:47,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-01 17:42:47,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:47,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-01 17:42:47,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:42:47,924 INFO L87 Difference]: Start difference. First operand 799 states and 1984 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:48,077 INFO L93 Difference]: Finished difference Result 1712 states and 4234 transitions. [2022-03-01 17:42:48,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 17:42:48,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:48,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:48,083 INFO L225 Difference]: With dead ends: 1712 [2022-03-01 17:42:48,083 INFO L226 Difference]: Without dead ends: 1700 [2022-03-01 17:42:48,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-03-01 17:42:48,084 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 160 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:48,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 316 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:48,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2022-03-01 17:42:48,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 854. [2022-03-01 17:42:48,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 2.4935521688159437) internal successors, (2127), 853 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 2127 transitions. [2022-03-01 17:42:48,106 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 2127 transitions. Word has length 36 [2022-03-01 17:42:48,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:48,106 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 2127 transitions. [2022-03-01 17:42:48,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,106 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 2127 transitions. [2022-03-01 17:42:48,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:48,108 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:48,108 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, 1, 1, 1, 1] [2022-03-01 17:42:48,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-01 17:42:48,108 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:48,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:48,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1834560997, now seen corresponding path program 8 times [2022-03-01 17:42:48,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:48,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442968692] [2022-03-01 17:42:48,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:48,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:48,176 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:48,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442968692] [2022-03-01 17:42:48,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442968692] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:48,176 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:48,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-01 17:42:48,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759484137] [2022-03-01 17:42:48,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:48,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-01 17:42:48,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:48,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-01 17:42:48,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:42:48,177 INFO L87 Difference]: Start difference. First operand 854 states and 2127 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:48,306 INFO L93 Difference]: Finished difference Result 1651 states and 4056 transitions. [2022-03-01 17:42:48,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 17:42:48,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:48,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:48,312 INFO L225 Difference]: With dead ends: 1651 [2022-03-01 17:42:48,312 INFO L226 Difference]: Without dead ends: 1627 [2022-03-01 17:42:48,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-03-01 17:42:48,312 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 194 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:48,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 290 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:48,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2022-03-01 17:42:48,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 814. [2022-03-01 17:42:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 2.4846248462484626) internal successors, (2020), 813 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 2020 transitions. [2022-03-01 17:42:48,332 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 2020 transitions. Word has length 36 [2022-03-01 17:42:48,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:48,332 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 2020 transitions. [2022-03-01 17:42:48,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,332 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 2020 transitions. [2022-03-01 17:42:48,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:48,334 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:48,334 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, 1, 1, 1, 1] [2022-03-01 17:42:48,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-01 17:42:48,334 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:48,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:48,334 INFO L85 PathProgramCache]: Analyzing trace with hash 972888603, now seen corresponding path program 9 times [2022-03-01 17:42:48,335 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:48,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003814827] [2022-03-01 17:42:48,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:48,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:48,363 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:48,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003814827] [2022-03-01 17:42:48,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003814827] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:48,363 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:48,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:42:48,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724297738] [2022-03-01 17:42:48,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:48,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 17:42:48,364 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:48,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 17:42:48,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:42:48,365 INFO L87 Difference]: Start difference. First operand 814 states and 2020 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:48,375 INFO L93 Difference]: Finished difference Result 790 states and 1933 transitions. [2022-03-01 17:42:48,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 17:42:48,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:48,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:48,379 INFO L225 Difference]: With dead ends: 790 [2022-03-01 17:42:48,379 INFO L226 Difference]: Without dead ends: 780 [2022-03-01 17:42:48,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:42:48,380 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 7 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:48,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 66 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:42:48,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-03-01 17:42:48,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2022-03-01 17:42:48,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 2.453145057766367) internal successors, (1911), 779 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1911 transitions. [2022-03-01 17:42:48,393 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1911 transitions. Word has length 36 [2022-03-01 17:42:48,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:48,394 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 1911 transitions. [2022-03-01 17:42:48,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,394 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1911 transitions. [2022-03-01 17:42:48,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:48,395 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:48,396 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, 1, 1, 1, 1] [2022-03-01 17:42:48,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-01 17:42:48,396 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:48,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:48,396 INFO L85 PathProgramCache]: Analyzing trace with hash 337156243, now seen corresponding path program 10 times [2022-03-01 17:42:48,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:48,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464193539] [2022-03-01 17:42:48,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:48,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:48,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:48,444 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:48,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464193539] [2022-03-01 17:42:48,445 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464193539] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:48,445 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:48,445 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:42:48,445 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036513099] [2022-03-01 17:42:48,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:48,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:42:48,445 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:48,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:42:48,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:42:48,446 INFO L87 Difference]: Start difference. First operand 780 states and 1911 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:48,581 INFO L93 Difference]: Finished difference Result 1251 states and 2962 transitions. [2022-03-01 17:42:48,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-01 17:42:48,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:48,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:48,585 INFO L225 Difference]: With dead ends: 1251 [2022-03-01 17:42:48,586 INFO L226 Difference]: Without dead ends: 1065 [2022-03-01 17:42:48,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-03-01 17:42:48,586 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 116 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:48,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 469 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:48,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-03-01 17:42:48,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 851. [2022-03-01 17:42:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 850 states have (on average 2.408235294117647) internal successors, (2047), 850 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 2047 transitions. [2022-03-01 17:42:48,604 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 2047 transitions. Word has length 36 [2022-03-01 17:42:48,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:48,605 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 2047 transitions. [2022-03-01 17:42:48,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,605 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 2047 transitions. [2022-03-01 17:42:48,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:48,615 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:48,615 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, 1, 1, 1, 1] [2022-03-01 17:42:48,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-01 17:42:48,615 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:48,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:48,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2100901907, now seen corresponding path program 11 times [2022-03-01 17:42:48,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:48,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809399991] [2022-03-01 17:42:48,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:48,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:48,670 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:48,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809399991] [2022-03-01 17:42:48,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809399991] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:48,670 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:48,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:42:48,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227006895] [2022-03-01 17:42:48,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:48,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:42:48,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:48,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:42:48,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:42:48,672 INFO L87 Difference]: Start difference. First operand 851 states and 2047 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:48,796 INFO L93 Difference]: Finished difference Result 1179 states and 2770 transitions. [2022-03-01 17:42:48,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-01 17:42:48,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:48,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:48,800 INFO L225 Difference]: With dead ends: 1179 [2022-03-01 17:42:48,800 INFO L226 Difference]: Without dead ends: 1051 [2022-03-01 17:42:48,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-03-01 17:42:48,801 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 130 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:48,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 426 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:48,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2022-03-01 17:42:48,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 845. [2022-03-01 17:42:48,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 2.4004739336492893) internal successors, (2026), 844 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2026 transitions. [2022-03-01 17:42:48,816 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2026 transitions. Word has length 36 [2022-03-01 17:42:48,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:48,816 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 2026 transitions. [2022-03-01 17:42:48,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,816 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2026 transitions. [2022-03-01 17:42:48,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:48,818 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:48,818 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, 1, 1, 1, 1] [2022-03-01 17:42:48,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-01 17:42:48,818 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:48,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:48,818 INFO L85 PathProgramCache]: Analyzing trace with hash 342917493, now seen corresponding path program 12 times [2022-03-01 17:42:48,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:48,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168247299] [2022-03-01 17:42:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:48,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:48,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:48,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:48,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168247299] [2022-03-01 17:42:48,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168247299] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:48,872 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:48,872 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:42:48,872 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922064011] [2022-03-01 17:42:48,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:48,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:42:48,872 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:48,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:42:48,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:42:48,873 INFO L87 Difference]: Start difference. First operand 845 states and 2026 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:48,978 INFO L93 Difference]: Finished difference Result 1124 states and 2638 transitions. [2022-03-01 17:42:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 17:42:48,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:48,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:48,982 INFO L225 Difference]: With dead ends: 1124 [2022-03-01 17:42:48,982 INFO L226 Difference]: Without dead ends: 934 [2022-03-01 17:42:48,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-03-01 17:42:48,982 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 100 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:48,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 405 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:48,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-03-01 17:42:48,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 760. [2022-03-01 17:42:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 2.399209486166008) internal successors, (1821), 759 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1821 transitions. [2022-03-01 17:42:48,995 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1821 transitions. Word has length 36 [2022-03-01 17:42:48,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:48,995 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1821 transitions. [2022-03-01 17:42:48,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:48,995 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1821 transitions. [2022-03-01 17:42:48,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:48,996 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:48,996 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, 1, 1, 1, 1] [2022-03-01 17:42:48,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-01 17:42:48,996 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:48,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1700767717, now seen corresponding path program 13 times [2022-03-01 17:42:48,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:48,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006673057] [2022-03-01 17:42:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:48,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:49,025 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:49,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006673057] [2022-03-01 17:42:49,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006673057] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:49,025 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:49,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:42:49,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505717738] [2022-03-01 17:42:49,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:49,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:42:49,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:49,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:42:49,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:42:49,026 INFO L87 Difference]: Start difference. First operand 760 states and 1821 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:49,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:49,157 INFO L93 Difference]: Finished difference Result 1116 states and 2583 transitions. [2022-03-01 17:42:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-01 17:42:49,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:49,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:49,161 INFO L225 Difference]: With dead ends: 1116 [2022-03-01 17:42:49,161 INFO L226 Difference]: Without dead ends: 1017 [2022-03-01 17:42:49,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-03-01 17:42:49,162 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 111 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:49,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 398 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:49,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2022-03-01 17:42:49,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 769. [2022-03-01 17:42:49,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 2.40234375) internal successors, (1845), 768 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:49,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1845 transitions. [2022-03-01 17:42:49,175 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1845 transitions. Word has length 36 [2022-03-01 17:42:49,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:49,175 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 1845 transitions. [2022-03-01 17:42:49,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:49,176 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1845 transitions. [2022-03-01 17:42:49,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:49,177 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:49,177 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, 1, 1, 1, 1] [2022-03-01 17:42:49,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-01 17:42:49,177 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:49,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:49,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1296814019, now seen corresponding path program 14 times [2022-03-01 17:42:49,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:49,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185288548] [2022-03-01 17:42:49,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:49,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:49,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:49,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185288548] [2022-03-01 17:42:49,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185288548] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:49,209 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:49,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:42:49,209 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703484915] [2022-03-01 17:42:49,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:49,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:42:49,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:49,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:42:49,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:42:49,210 INFO L87 Difference]: Start difference. First operand 769 states and 1845 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:49,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:49,355 INFO L93 Difference]: Finished difference Result 1108 states and 2570 transitions. [2022-03-01 17:42:49,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-01 17:42:49,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:49,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:49,359 INFO L225 Difference]: With dead ends: 1108 [2022-03-01 17:42:49,359 INFO L226 Difference]: Without dead ends: 994 [2022-03-01 17:42:49,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-03-01 17:42:49,360 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 128 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:49,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 422 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:49,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2022-03-01 17:42:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 826. [2022-03-01 17:42:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 2.353939393939394) internal successors, (1942), 825 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1942 transitions. [2022-03-01 17:42:49,374 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1942 transitions. Word has length 36 [2022-03-01 17:42:49,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:49,374 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 1942 transitions. [2022-03-01 17:42:49,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:49,374 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1942 transitions. [2022-03-01 17:42:49,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:49,376 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:49,376 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, 1, 1, 1, 1] [2022-03-01 17:42:49,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-01 17:42:49,376 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:49,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:49,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1663561947, now seen corresponding path program 15 times [2022-03-01 17:42:49,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:49,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110341172] [2022-03-01 17:42:49,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:49,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:49,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:49,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110341172] [2022-03-01 17:42:49,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110341172] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:49,407 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:49,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:42:49,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89826225] [2022-03-01 17:42:49,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:49,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:42:49,407 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:49,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:42:49,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:42:49,408 INFO L87 Difference]: Start difference. First operand 826 states and 1942 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:49,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:49,523 INFO L93 Difference]: Finished difference Result 1089 states and 2514 transitions. [2022-03-01 17:42:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 17:42:49,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:49,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:49,526 INFO L225 Difference]: With dead ends: 1089 [2022-03-01 17:42:49,526 INFO L226 Difference]: Without dead ends: 918 [2022-03-01 17:42:49,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-03-01 17:42:49,527 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 98 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:49,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 404 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:49,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2022-03-01 17:42:49,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 751. [2022-03-01 17:42:49,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 2.3613333333333335) internal successors, (1771), 750 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1771 transitions. [2022-03-01 17:42:49,539 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1771 transitions. Word has length 36 [2022-03-01 17:42:49,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:49,539 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 1771 transitions. [2022-03-01 17:42:49,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:49,539 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1771 transitions. [2022-03-01 17:42:49,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:49,541 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:49,541 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, 1, 1, 1, 1] [2022-03-01 17:42:49,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-01 17:42:49,541 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:49,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:49,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1441937143, now seen corresponding path program 16 times [2022-03-01 17:42:49,541 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:49,541 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001676586] [2022-03-01 17:42:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:49,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:49,574 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:49,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001676586] [2022-03-01 17:42:49,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001676586] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:49,574 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:49,574 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-01 17:42:49,574 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428673969] [2022-03-01 17:42:49,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:49,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:42:49,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:49,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:42:49,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:42:49,575 INFO L87 Difference]: Start difference. First operand 751 states and 1771 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:49,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:49,719 INFO L93 Difference]: Finished difference Result 984 states and 2257 transitions. [2022-03-01 17:42:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-01 17:42:49,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:49,723 INFO L225 Difference]: With dead ends: 984 [2022-03-01 17:42:49,723 INFO L226 Difference]: Without dead ends: 893 [2022-03-01 17:42:49,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-03-01 17:42:49,723 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 133 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:49,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 535 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:49,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-03-01 17:42:49,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 687. [2022-03-01 17:42:49,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.3658892128279883) internal successors, (1623), 686 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:49,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1623 transitions. [2022-03-01 17:42:49,751 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1623 transitions. Word has length 36 [2022-03-01 17:42:49,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:49,751 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1623 transitions. [2022-03-01 17:42:49,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:49,752 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1623 transitions. [2022-03-01 17:42:49,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:49,753 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:49,753 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, 1, 1, 1, 1] [2022-03-01 17:42:49,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-01 17:42:49,753 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:49,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:49,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1089284489, now seen corresponding path program 17 times [2022-03-01 17:42:49,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:49,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095054124] [2022-03-01 17:42:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:49,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:49,779 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:49,779 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095054124] [2022-03-01 17:42:49,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095054124] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:49,779 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:49,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:42:49,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958022727] [2022-03-01 17:42:49,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:49,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:42:49,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:49,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:42:49,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:42:49,780 INFO L87 Difference]: Start difference. First operand 687 states and 1623 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:49,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:49,933 INFO L93 Difference]: Finished difference Result 1072 states and 2458 transitions. [2022-03-01 17:42:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-01 17:42:49,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:49,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:49,935 INFO L225 Difference]: With dead ends: 1072 [2022-03-01 17:42:49,935 INFO L226 Difference]: Without dead ends: 1004 [2022-03-01 17:42:49,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-03-01 17:42:49,936 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 114 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:49,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 425 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:49,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2022-03-01 17:42:49,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 747. [2022-03-01 17:42:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 2.312332439678284) internal successors, (1725), 746 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:49,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1725 transitions. [2022-03-01 17:42:49,948 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1725 transitions. Word has length 36 [2022-03-01 17:42:49,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:49,948 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 1725 transitions. [2022-03-01 17:42:49,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:49,948 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1725 transitions. [2022-03-01 17:42:49,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:49,949 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:49,949 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, 1, 1, 1, 1] [2022-03-01 17:42:49,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-01 17:42:49,950 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:49,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:49,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1447698393, now seen corresponding path program 18 times [2022-03-01 17:42:49,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:49,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54501159] [2022-03-01 17:42:49,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:49,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:49,977 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:49,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54501159] [2022-03-01 17:42:49,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54501159] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:49,977 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:49,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:42:49,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003886906] [2022-03-01 17:42:49,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:49,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:42:49,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:49,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:42:49,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:42:49,978 INFO L87 Difference]: Start difference. First operand 747 states and 1725 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:50,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:50,117 INFO L93 Difference]: Finished difference Result 941 states and 2169 transitions. [2022-03-01 17:42:50,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-01 17:42:50,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:50,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:50,119 INFO L225 Difference]: With dead ends: 941 [2022-03-01 17:42:50,119 INFO L226 Difference]: Without dead ends: 787 [2022-03-01 17:42:50,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-03-01 17:42:50,120 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 112 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:50,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 380 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-03-01 17:42:50,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 685. [2022-03-01 17:42:50,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 2.3084795321637426) internal successors, (1579), 684 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:50,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1579 transitions. [2022-03-01 17:42:50,131 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1579 transitions. Word has length 36 [2022-03-01 17:42:50,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:50,131 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 1579 transitions. [2022-03-01 17:42:50,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:50,131 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1579 transitions. [2022-03-01 17:42:50,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:50,132 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:50,132 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, 1, 1, 1, 1] [2022-03-01 17:42:50,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-01 17:42:50,132 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:50,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:50,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1898739869, now seen corresponding path program 19 times [2022-03-01 17:42:50,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:50,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343968643] [2022-03-01 17:42:50,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:50,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:50,164 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:50,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343968643] [2022-03-01 17:42:50,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343968643] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:50,164 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:50,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:42:50,164 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003634413] [2022-03-01 17:42:50,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:50,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:42:50,165 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:50,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:42:50,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:42:50,165 INFO L87 Difference]: Start difference. First operand 685 states and 1579 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:50,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:50,300 INFO L93 Difference]: Finished difference Result 855 states and 1962 transitions. [2022-03-01 17:42:50,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-01 17:42:50,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:50,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:50,302 INFO L225 Difference]: With dead ends: 855 [2022-03-01 17:42:50,302 INFO L226 Difference]: Without dead ends: 722 [2022-03-01 17:42:50,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-03-01 17:42:50,303 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 112 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:50,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 377 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:50,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-03-01 17:42:50,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 625. [2022-03-01 17:42:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.315705128205128) internal successors, (1445), 624 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1445 transitions. [2022-03-01 17:42:50,313 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1445 transitions. Word has length 36 [2022-03-01 17:42:50,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:50,313 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1445 transitions. [2022-03-01 17:42:50,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:50,313 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1445 transitions. [2022-03-01 17:42:50,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:50,314 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:50,314 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, 1, 1, 1, 1] [2022-03-01 17:42:50,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-01 17:42:50,314 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:50,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:50,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1528708859, now seen corresponding path program 20 times [2022-03-01 17:42:50,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:50,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306542537] [2022-03-01 17:42:50,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:50,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:50,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:50,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306542537] [2022-03-01 17:42:50,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306542537] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:50,346 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:50,346 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-01 17:42:50,346 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809710829] [2022-03-01 17:42:50,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:50,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:42:50,347 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:50,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:42:50,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:42:50,347 INFO L87 Difference]: Start difference. First operand 625 states and 1445 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:50,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:50,537 INFO L93 Difference]: Finished difference Result 810 states and 1861 transitions. [2022-03-01 17:42:50,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 17:42:50,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:50,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:50,538 INFO L225 Difference]: With dead ends: 810 [2022-03-01 17:42:50,538 INFO L226 Difference]: Without dead ends: 761 [2022-03-01 17:42:50,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-03-01 17:42:50,539 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 120 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:50,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 406 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:50,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-03-01 17:42:50,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 631. [2022-03-01 17:42:50,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 630 states have (on average 2.3142857142857145) internal successors, (1458), 630 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:50,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1458 transitions. [2022-03-01 17:42:50,548 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1458 transitions. Word has length 36 [2022-03-01 17:42:50,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:50,548 INFO L470 AbstractCegarLoop]: Abstraction has 631 states and 1458 transitions. [2022-03-01 17:42:50,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:50,548 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1458 transitions. [2022-03-01 17:42:50,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:50,549 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:50,549 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, 1, 1, 1, 1] [2022-03-01 17:42:50,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-01 17:42:50,549 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:50,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:50,550 INFO L85 PathProgramCache]: Analyzing trace with hash 502085207, now seen corresponding path program 21 times [2022-03-01 17:42:50,550 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:50,550 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035509919] [2022-03-01 17:42:50,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:50,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:50,575 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:50,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035509919] [2022-03-01 17:42:50,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035509919] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:50,575 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:50,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:42:50,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278678375] [2022-03-01 17:42:50,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:50,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:42:50,576 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:50,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:42:50,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:42:50,576 INFO L87 Difference]: Start difference. First operand 631 states and 1458 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:50,653 INFO L93 Difference]: Finished difference Result 760 states and 1753 transitions. [2022-03-01 17:42:50,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 17:42:50,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:50,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:50,654 INFO L225 Difference]: With dead ends: 760 [2022-03-01 17:42:50,655 INFO L226 Difference]: Without dead ends: 588 [2022-03-01 17:42:50,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:42:50,655 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 68 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:50,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 247 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:50,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-03-01 17:42:50,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 521. [2022-03-01 17:42:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 2.3134615384615387) internal successors, (1203), 520 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:50,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1203 transitions. [2022-03-01 17:42:50,663 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1203 transitions. Word has length 36 [2022-03-01 17:42:50,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:50,663 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 1203 transitions. [2022-03-01 17:42:50,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:50,663 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1203 transitions. [2022-03-01 17:42:50,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:50,664 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:50,664 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, 1, 1, 1, 1] [2022-03-01 17:42:50,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-01 17:42:50,664 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:50,664 INFO L85 PathProgramCache]: Analyzing trace with hash 182084169, now seen corresponding path program 22 times [2022-03-01 17:42:50,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:50,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901162699] [2022-03-01 17:42:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:50,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:50,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:50,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901162699] [2022-03-01 17:42:50,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901162699] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:50,693 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:50,694 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-01 17:42:50,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678972381] [2022-03-01 17:42:50,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:50,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:42:50,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:50,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:42:50,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:42:50,694 INFO L87 Difference]: Start difference. First operand 521 states and 1203 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:50,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:50,829 INFO L93 Difference]: Finished difference Result 699 states and 1564 transitions. [2022-03-01 17:42:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-01 17:42:50,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:50,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:50,830 INFO L225 Difference]: With dead ends: 699 [2022-03-01 17:42:50,830 INFO L226 Difference]: Without dead ends: 598 [2022-03-01 17:42:50,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-03-01 17:42:50,831 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 122 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:50,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 467 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:50,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-03-01 17:42:50,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 434. [2022-03-01 17:42:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 2.325635103926097) internal successors, (1007), 433 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1007 transitions. [2022-03-01 17:42:50,838 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1007 transitions. Word has length 36 [2022-03-01 17:42:50,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:50,838 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1007 transitions. [2022-03-01 17:42:50,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1007 transitions. [2022-03-01 17:42:50,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:50,839 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:50,839 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, 1, 1, 1, 1] [2022-03-01 17:42:50,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-01 17:42:50,839 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:50,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:50,839 INFO L85 PathProgramCache]: Analyzing trace with hash 787875763, now seen corresponding path program 23 times [2022-03-01 17:42:50,839 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:50,839 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621928756] [2022-03-01 17:42:50,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:50,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:50,869 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:50,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621928756] [2022-03-01 17:42:50,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621928756] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:50,869 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:50,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-01 17:42:50,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730992260] [2022-03-01 17:42:50,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:50,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 17:42:50,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:50,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 17:42:50,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-03-01 17:42:50,870 INFO L87 Difference]: Start difference. First operand 434 states and 1007 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:51,023 INFO L93 Difference]: Finished difference Result 598 states and 1372 transitions. [2022-03-01 17:42:51,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 17:42:51,023 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:51,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:51,024 INFO L225 Difference]: With dead ends: 598 [2022-03-01 17:42:51,024 INFO L226 Difference]: Without dead ends: 546 [2022-03-01 17:42:51,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-03-01 17:42:51,025 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 110 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:51,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 320 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-03-01 17:42:51,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 441. [2022-03-01 17:42:51,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 2.3227272727272728) internal successors, (1022), 440 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1022 transitions. [2022-03-01 17:42:51,032 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1022 transitions. Word has length 36 [2022-03-01 17:42:51,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:51,033 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 1022 transitions. [2022-03-01 17:42:51,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,033 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1022 transitions. [2022-03-01 17:42:51,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:51,034 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:51,034 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, 1, 1, 1, 1] [2022-03-01 17:42:51,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-01 17:42:51,034 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:51,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:51,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1584611515, now seen corresponding path program 24 times [2022-03-01 17:42:51,034 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:51,034 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706531093] [2022-03-01 17:42:51,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:51,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:51,061 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:51,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706531093] [2022-03-01 17:42:51,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706531093] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:51,061 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:51,061 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:42:51,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582784345] [2022-03-01 17:42:51,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:51,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:42:51,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:51,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:42:51,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:42:51,062 INFO L87 Difference]: Start difference. First operand 441 states and 1022 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:51,135 INFO L93 Difference]: Finished difference Result 542 states and 1249 transitions. [2022-03-01 17:42:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 17:42:51,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:51,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:51,136 INFO L225 Difference]: With dead ends: 542 [2022-03-01 17:42:51,136 INFO L226 Difference]: Without dead ends: 381 [2022-03-01 17:42:51,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:42:51,137 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 72 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:51,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 235 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:42:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-03-01 17:42:51,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 342. [2022-03-01 17:42:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.346041055718475) internal successors, (800), 341 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 800 transitions. [2022-03-01 17:42:51,142 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 800 transitions. Word has length 36 [2022-03-01 17:42:51,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:51,142 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 800 transitions. [2022-03-01 17:42:51,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 800 transitions. [2022-03-01 17:42:51,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:51,143 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:51,143 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, 1, 1, 1, 1] [2022-03-01 17:42:51,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-01 17:42:51,144 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:51,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:51,144 INFO L85 PathProgramCache]: Analyzing trace with hash -81066003, now seen corresponding path program 25 times [2022-03-01 17:42:51,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:51,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703053137] [2022-03-01 17:42:51,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:51,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:51,203 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:51,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703053137] [2022-03-01 17:42:51,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703053137] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:51,203 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:51,203 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-01 17:42:51,203 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641504713] [2022-03-01 17:42:51,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:51,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-01 17:42:51,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:51,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-01 17:42:51,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:42:51,204 INFO L87 Difference]: Start difference. First operand 342 states and 800 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:51,298 INFO L93 Difference]: Finished difference Result 452 states and 1058 transitions. [2022-03-01 17:42:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 17:42:51,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:51,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:51,299 INFO L225 Difference]: With dead ends: 452 [2022-03-01 17:42:51,299 INFO L226 Difference]: Without dead ends: 432 [2022-03-01 17:42:51,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-03-01 17:42:51,300 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 141 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:51,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 182 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:42:51,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-03-01 17:42:51,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 377. [2022-03-01 17:42:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.3351063829787235) internal successors, (878), 376 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 878 transitions. [2022-03-01 17:42:51,305 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 878 transitions. Word has length 36 [2022-03-01 17:42:51,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:51,306 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 878 transitions. [2022-03-01 17:42:51,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,306 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 878 transitions. [2022-03-01 17:42:51,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:51,306 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:51,306 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, 1, 1, 1, 1] [2022-03-01 17:42:51,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-01 17:42:51,307 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:51,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:51,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1097121811, now seen corresponding path program 26 times [2022-03-01 17:42:51,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:51,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852602831] [2022-03-01 17:42:51,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:51,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:51,358 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:51,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852602831] [2022-03-01 17:42:51,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852602831] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:51,358 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:51,358 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-01 17:42:51,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644399788] [2022-03-01 17:42:51,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:51,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-01 17:42:51,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:51,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-01 17:42:51,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:42:51,359 INFO L87 Difference]: Start difference. First operand 377 states and 878 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:51,440 INFO L93 Difference]: Finished difference Result 397 states and 914 transitions. [2022-03-01 17:42:51,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 17:42:51,441 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:51,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:51,441 INFO L225 Difference]: With dead ends: 397 [2022-03-01 17:42:51,441 INFO L226 Difference]: Without dead ends: 332 [2022-03-01 17:42:51,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-03-01 17:42:51,442 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 154 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:51,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 139 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:42:51,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-03-01 17:42:51,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2022-03-01 17:42:51,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.3323262839879155) internal successors, (772), 331 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 772 transitions. [2022-03-01 17:42:51,447 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 772 transitions. Word has length 36 [2022-03-01 17:42:51,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:51,447 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 772 transitions. [2022-03-01 17:42:51,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,447 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 772 transitions. [2022-03-01 17:42:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:51,448 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:51,448 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:42:51,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-01 17:42:51,448 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:51,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:51,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1809960399, now seen corresponding path program 27 times [2022-03-01 17:42:51,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:51,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293239988] [2022-03-01 17:42:51,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:51,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:51,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:51,499 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:51,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293239988] [2022-03-01 17:42:51,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293239988] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:51,499 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:51,499 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-01 17:42:51,500 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262081598] [2022-03-01 17:42:51,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:51,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-01 17:42:51,500 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:51,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-01 17:42:51,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:42:51,500 INFO L87 Difference]: Start difference. First operand 332 states and 772 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:51,580 INFO L93 Difference]: Finished difference Result 472 states and 1099 transitions. [2022-03-01 17:42:51,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 17:42:51,581 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:51,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:51,581 INFO L225 Difference]: With dead ends: 472 [2022-03-01 17:42:51,581 INFO L226 Difference]: Without dead ends: 452 [2022-03-01 17:42:51,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2022-03-01 17:42:51,582 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 132 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:51,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 150 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:42:51,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-03-01 17:42:51,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 377. [2022-03-01 17:42:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.3218085106382977) internal successors, (873), 376 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 873 transitions. [2022-03-01 17:42:51,587 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 873 transitions. Word has length 36 [2022-03-01 17:42:51,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:51,588 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 873 transitions. [2022-03-01 17:42:51,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,588 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 873 transitions. [2022-03-01 17:42:51,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:51,588 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:51,588 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, 1, 1, 1, 1] [2022-03-01 17:42:51,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-01 17:42:51,589 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:51,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:51,589 INFO L85 PathProgramCache]: Analyzing trace with hash 793904591, now seen corresponding path program 28 times [2022-03-01 17:42:51,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:51,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100678019] [2022-03-01 17:42:51,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:51,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:51,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:51,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100678019] [2022-03-01 17:42:51,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100678019] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:51,640 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:51,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-01 17:42:51,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696183514] [2022-03-01 17:42:51,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:51,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-01 17:42:51,640 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:51,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-01 17:42:51,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-01 17:42:51,641 INFO L87 Difference]: Start difference. First operand 377 states and 873 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:51,718 INFO L93 Difference]: Finished difference Result 397 states and 909 transitions. [2022-03-01 17:42:51,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 17:42:51,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:51,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:51,719 INFO L225 Difference]: With dead ends: 397 [2022-03-01 17:42:51,719 INFO L226 Difference]: Without dead ends: 327 [2022-03-01 17:42:51,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2022-03-01 17:42:51,720 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 110 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:51,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 146 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:42:51,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-03-01 17:42:51,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2022-03-01 17:42:51,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 2.3251533742331287) internal successors, (758), 326 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 758 transitions. [2022-03-01 17:42:51,724 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 758 transitions. Word has length 36 [2022-03-01 17:42:51,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:51,724 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 758 transitions. [2022-03-01 17:42:51,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,724 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 758 transitions. [2022-03-01 17:42:51,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-01 17:42:51,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:42:51,725 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, 1, 1, 1, 1] [2022-03-01 17:42:51,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-01 17:42:51,725 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 17:42:51,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:42:51,725 INFO L85 PathProgramCache]: Analyzing trace with hash 579788737, now seen corresponding path program 29 times [2022-03-01 17:42:51,725 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:42:51,725 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981171242] [2022-03-01 17:42:51,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:42:51,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:42:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:42:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:42:51,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:42:51,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981171242] [2022-03-01 17:42:51,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981171242] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:42:51,755 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:42:51,755 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-01 17:42:51,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998349158] [2022-03-01 17:42:51,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:42:51,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:42:51,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:42:51,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:42:51,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:42:51,755 INFO L87 Difference]: Start difference. First operand 327 states and 758 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:42:51,796 INFO L93 Difference]: Finished difference Result 189 states and 426 transitions. [2022-03-01 17:42:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:42:51,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-01 17:42:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:42:51,797 INFO L225 Difference]: With dead ends: 189 [2022-03-01 17:42:51,797 INFO L226 Difference]: Without dead ends: 0 [2022-03-01 17:42:51,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-01 17:42:51,797 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 50 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:42:51,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 92 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:42:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-01 17:42:51,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-01 17:42:51,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-01 17:42:51,798 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2022-03-01 17:42:51,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:42:51,798 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-01 17:42:51,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:42:51,798 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-01 17:42:51,798 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-01 17:42:51,800 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-01 17:42:51,801 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-01 17:42:51,802 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-01 17:42:51,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-01 17:42:51,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-01 17:42:51,805 INFO L732 BasicCegarLoop]: Path program histogram: [29] [2022-03-01 17:42:51,807 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 17:42:51,807 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 17:42:51,810 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 05:42:51 BasicIcfg [2022-03-01 17:42:51,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 17:42:51,810 INFO L158 Benchmark]: Toolchain (without parser) took 6242.03ms. Allocated memory was 223.3MB in the beginning and 371.2MB in the end (delta: 147.8MB). Free memory was 187.9MB in the beginning and 222.0MB in the end (delta: -34.1MB). Peak memory consumption was 115.7MB. Max. memory is 8.0GB. [2022-03-01 17:42:51,811 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 223.3MB. Free memory is still 188.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 17:42:51,811 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.56ms. Allocated memory is still 223.3MB. Free memory was 187.8MB in the beginning and 186.2MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-01 17:42:51,811 INFO L158 Benchmark]: Boogie Preprocessor took 14.28ms. Allocated memory is still 223.3MB. Free memory was 186.2MB in the beginning and 185.3MB in the end (delta: 908.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 17:42:51,811 INFO L158 Benchmark]: RCFGBuilder took 160.79ms. Allocated memory is still 223.3MB. Free memory was 185.2MB in the beginning and 176.2MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-01 17:42:51,812 INFO L158 Benchmark]: TraceAbstraction took 6042.46ms. Allocated memory was 223.3MB in the beginning and 371.2MB in the end (delta: 147.8MB). Free memory was 175.6MB in the beginning and 222.0MB in the end (delta: -46.3MB). Peak memory consumption was 102.1MB. Max. memory is 8.0GB. [2022-03-01 17:42:51,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12ms. Allocated memory is still 223.3MB. Free memory is still 188.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.56ms. Allocated memory is still 223.3MB. Free memory was 187.8MB in the beginning and 186.2MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.28ms. Allocated memory is still 223.3MB. Free memory was 186.2MB in the beginning and 185.3MB in the end (delta: 908.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 160.79ms. Allocated memory is still 223.3MB. Free memory was 185.2MB in the beginning and 176.2MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 6042.46ms. Allocated memory was 223.3MB in the beginning and 371.2MB in the end (delta: 147.8MB). Free memory was 175.6MB in the beginning and 222.0MB in the end (delta: -46.3MB). Peak memory consumption was 102.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 71]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 71 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 29, TraceHistogramMax: 1, PathProgramHistogramMax: 29, EmptinessCheckTime: 0.1s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3314 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3314 mSDsluCounter, 9051 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8635 mSDsCounter, 357 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5214 IncrementalHoareTripleChecker+Invalid, 5571 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 357 mSolverCounterUnsat, 2094 mSDtfsCounter, 5214 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 411 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=854occurred in iteration=7, InterpolantAutomatonStates: 337, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 29 MinimizatonAttempts, 6894 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1044 NumberOfCodeBlocks, 1044 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1015 ConstructedInterpolants, 0 QuantifiedInterpolants, 3661 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-01 17:42:51,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...