/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 03:58:38,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 03:58:38,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 03:58:38,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 03:58:38,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 03:58:38,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 03:58:38,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 03:58:38,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 03:58:38,179 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 03:58:38,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 03:58:38,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 03:58:38,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 03:58:38,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 03:58:38,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 03:58:38,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 03:58:38,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 03:58:38,181 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 03:58:38,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 03:58:38,181 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 03:58:38,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 03:58:38,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 03:58:38,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 03:58:38,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 03:58:38,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 03:58:38,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 03:58:38,182 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 03:58:38,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 03:58:38,182 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 03:58:38,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 03:58:38,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 03:58:38,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 03:58:38,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 03:58:38,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 03:58:38,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:58:38,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 03:58:38,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 03:58:38,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 03:58:38,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 03:58:38,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 03:58:38,183 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 03:58:38,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 03:58:38,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 03:58:38,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 03:58:38,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 03:58:38,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 03:58:38,330 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 03:58:38,332 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 03:58:38,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl [2022-01-18 03:58:38,333 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl' [2022-01-18 03:58:38,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 03:58:38,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 03:58:38,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 03:58:38,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 03:58:38,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 03:58:38,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:58:38" (1/1) ... [2022-01-18 03:58:38,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:58:38" (1/1) ... [2022-01-18 03:58:38,374 INFO L137 Inliner]: procedures = 6, calls = 5, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 03:58:38,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 03:58:38,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 03:58:38,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 03:58:38,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 03:58:38,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:58:38" (1/1) ... [2022-01-18 03:58:38,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:58:38" (1/1) ... [2022-01-18 03:58:38,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:58:38" (1/1) ... [2022-01-18 03:58:38,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:58:38" (1/1) ... [2022-01-18 03:58:38,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:58:38" (1/1) ... [2022-01-18 03:58:38,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:58:38" (1/1) ... [2022-01-18 03:58:38,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:58:38" (1/1) ... [2022-01-18 03:58:38,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 03:58:38,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 03:58:38,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 03:58:38,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 03:58:38,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:58:38" (1/1) ... [2022-01-18 03:58:38,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:58:38,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:58:38,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 03:58:38,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 03:58:38,448 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2022-01-18 03:58:38,448 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2022-01-18 03:58:38,448 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2022-01-18 03:58:38,448 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2022-01-18 03:58:38,448 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2022-01-18 03:58:38,448 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2022-01-18 03:58:38,449 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2022-01-18 03:58:38,449 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2022-01-18 03:58:38,449 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2022-01-18 03:58:38,449 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2022-01-18 03:58:38,449 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2022-01-18 03:58:38,449 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2022-01-18 03:58:38,450 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2022-01-18 03:58:38,450 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2022-01-18 03:58:38,450 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2022-01-18 03:58:38,450 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 03:58:38,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 03:58:38,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 03:58:38,452 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 03:58:38,483 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 03:58:38,484 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 03:58:38,554 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 03:58:38,558 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 03:58:38,559 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 03:58:38,560 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:58:38 BoogieIcfgContainer [2022-01-18 03:58:38,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 03:58:38,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 03:58:38,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 03:58:38,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 03:58:38,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:58:38" (1/2) ... [2022-01-18 03:58:38,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d978c1 and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:58:38, skipping insertion in model container [2022-01-18 03:58:38,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:58:38" (2/2) ... [2022-01-18 03:58:38,568 INFO L111 eAbstractionObserver]: Analyzing ICFG example_5.bpl [2022-01-18 03:58:38,570 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 03:58:38,571 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 03:58:38,571 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 03:58:38,571 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 03:58:38,618 INFO L148 ThreadInstanceAdder]: Constructed 25 joinOtherThreadTransitions. [2022-01-18 03:58:38,646 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:58:38,650 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 03:58:38,651 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-18 03:58:38,657 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 48 transitions, 196 flow [2022-01-18 03:58:38,738 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1146 states, 1145 states have (on average 3.708296943231441) internal successors, (4246), 1145 states have internal predecessors, (4246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:38,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 1146 states, 1145 states have (on average 3.708296943231441) internal successors, (4246), 1145 states have internal predecessors, (4246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:38,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:38,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:38,760 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:38,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:38,763 INFO L85 PathProgramCache]: Analyzing trace with hash 921696585, now seen corresponding path program 1 times [2022-01-18 03:58:38,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:38,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912834057] [2022-01-18 03:58:38,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:38,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:38,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:38,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:38,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912834057] [2022-01-18 03:58:38,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912834057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:38,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:38,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:58:38,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502965221] [2022-01-18 03:58:38,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:38,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:58:38,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:38,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:58:38,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:58:38,889 INFO L87 Difference]: Start difference. First operand has 1146 states, 1145 states have (on average 3.708296943231441) internal successors, (4246), 1145 states have internal predecessors, (4246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:38,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:38,959 INFO L93 Difference]: Finished difference Result 903 states and 3247 transitions. [2022-01-18 03:58:38,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:58:38,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:38,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:38,977 INFO L225 Difference]: With dead ends: 903 [2022-01-18 03:58:38,977 INFO L226 Difference]: Without dead ends: 903 [2022-01-18 03:58:38,978 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 [2022-01-18 03:58:38,980 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 28 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:38,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 23 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:38,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-01-18 03:58:39,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 903. [2022-01-18 03:58:39,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 902 states have (on average 3.5997782705099777) internal successors, (3247), 902 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 3247 transitions. [2022-01-18 03:58:39,126 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 3247 transitions. Word has length 21 [2022-01-18 03:58:39,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:39,127 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 3247 transitions. [2022-01-18 03:58:39,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:39,127 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 3247 transitions. [2022-01-18 03:58:39,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:39,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:39,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:39,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 03:58:39,131 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:39,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:39,132 INFO L85 PathProgramCache]: Analyzing trace with hash 922619145, now seen corresponding path program 1 times [2022-01-18 03:58:39,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:39,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481027767] [2022-01-18 03:58:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:39,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:39,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:39,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481027767] [2022-01-18 03:58:39,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481027767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:39,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:39,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:58:39,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451010350] [2022-01-18 03:58:39,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:39,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:58:39,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:39,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:58:39,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:58:39,158 INFO L87 Difference]: Start difference. First operand 903 states and 3247 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:39,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:39,192 INFO L93 Difference]: Finished difference Result 741 states and 2572 transitions. [2022-01-18 03:58:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:58:39,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:39,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:39,198 INFO L225 Difference]: With dead ends: 741 [2022-01-18 03:58:39,198 INFO L226 Difference]: Without dead ends: 741 [2022-01-18 03:58:39,198 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 [2022-01-18 03:58:39,199 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:39,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 19 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-01-18 03:58:39,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2022-01-18 03:58:39,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 3.4756756756756757) internal successors, (2572), 740 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:39,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 2572 transitions. [2022-01-18 03:58:39,227 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 2572 transitions. Word has length 21 [2022-01-18 03:58:39,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:39,227 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 2572 transitions. [2022-01-18 03:58:39,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:39,227 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 2572 transitions. [2022-01-18 03:58:39,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:39,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:39,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:39,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 03:58:39,229 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:39,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:39,230 INFO L85 PathProgramCache]: Analyzing trace with hash 923542635, now seen corresponding path program 1 times [2022-01-18 03:58:39,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:39,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463870994] [2022-01-18 03:58:39,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:39,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:39,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:39,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:39,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463870994] [2022-01-18 03:58:39,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463870994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:39,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:39,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:58:39,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147225808] [2022-01-18 03:58:39,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:39,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:58:39,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:39,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:58:39,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:58:39,251 INFO L87 Difference]: Start difference. First operand 741 states and 2572 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:39,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:39,270 INFO L93 Difference]: Finished difference Result 567 states and 1945 transitions. [2022-01-18 03:58:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:58:39,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:39,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:39,273 INFO L225 Difference]: With dead ends: 567 [2022-01-18 03:58:39,273 INFO L226 Difference]: Without dead ends: 567 [2022-01-18 03:58:39,273 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 [2022-01-18 03:58:39,274 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:39,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 27 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:39,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-01-18 03:58:39,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2022-01-18 03:58:39,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 3.4363957597173145) internal successors, (1945), 566 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:39,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1945 transitions. [2022-01-18 03:58:39,288 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1945 transitions. Word has length 21 [2022-01-18 03:58:39,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:39,288 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 1945 transitions. [2022-01-18 03:58:39,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:39,289 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1945 transitions. [2022-01-18 03:58:39,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:39,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:39,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:39,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 03:58:39,290 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:39,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:39,291 INFO L85 PathProgramCache]: Analyzing trace with hash 924406605, now seen corresponding path program 1 times [2022-01-18 03:58:39,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:39,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435309655] [2022-01-18 03:58:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:39,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:39,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:39,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435309655] [2022-01-18 03:58:39,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435309655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:39,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:39,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:39,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640329983] [2022-01-18 03:58:39,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:39,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:39,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:39,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:39,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:39,512 INFO L87 Difference]: Start difference. First operand 567 states and 1945 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:39,649 INFO L93 Difference]: Finished difference Result 1267 states and 4072 transitions. [2022-01-18 03:58:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:39,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:39,655 INFO L225 Difference]: With dead ends: 1267 [2022-01-18 03:58:39,655 INFO L226 Difference]: Without dead ends: 1133 [2022-01-18 03:58:39,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:39,662 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 82 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:39,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 102 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:39,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-01-18 03:58:39,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 616. [2022-01-18 03:58:39,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 3.4) internal successors, (2091), 615 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:39,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 2091 transitions. [2022-01-18 03:58:39,686 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 2091 transitions. Word has length 21 [2022-01-18 03:58:39,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:39,686 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 2091 transitions. [2022-01-18 03:58:39,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:39,687 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 2091 transitions. [2022-01-18 03:58:39,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:39,689 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:39,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:39,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 03:58:39,689 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:39,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:39,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1025849041, now seen corresponding path program 2 times [2022-01-18 03:58:39,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:39,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184371778] [2022-01-18 03:58:39,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:39,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:39,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:39,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:39,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184371778] [2022-01-18 03:58:39,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184371778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:39,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:39,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:39,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394785074] [2022-01-18 03:58:39,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:39,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:39,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:39,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:39,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:39,869 INFO L87 Difference]: Start difference. First operand 616 states and 2091 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:39,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:39,978 INFO L93 Difference]: Finished difference Result 1250 states and 3995 transitions. [2022-01-18 03:58:39,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:39,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:39,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:39,984 INFO L225 Difference]: With dead ends: 1250 [2022-01-18 03:58:39,984 INFO L226 Difference]: Without dead ends: 1098 [2022-01-18 03:58:39,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:39,985 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 84 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:39,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 96 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:39,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-01-18 03:58:39,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 581. [2022-01-18 03:58:39,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 3.420689655172414) internal successors, (1984), 580 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) [2022-01-18 03:58:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1984 transitions. [2022-01-18 03:58:40,001 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1984 transitions. Word has length 21 [2022-01-18 03:58:40,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:40,001 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 1984 transitions. [2022-01-18 03:58:40,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:40,002 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1984 transitions. [2022-01-18 03:58:40,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:40,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:40,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:40,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 03:58:40,004 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:40,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:40,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1173110165, now seen corresponding path program 3 times [2022-01-18 03:58:40,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:40,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76764600] [2022-01-18 03:58:40,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:40,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:40,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:40,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76764600] [2022-01-18 03:58:40,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76764600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:40,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:40,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:40,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105930315] [2022-01-18 03:58:40,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:40,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:40,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:40,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:40,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:40,125 INFO L87 Difference]: Start difference. First operand 581 states and 1984 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:40,245 INFO L93 Difference]: Finished difference Result 1207 states and 3862 transitions. [2022-01-18 03:58:40,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:40,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:40,250 INFO L225 Difference]: With dead ends: 1207 [2022-01-18 03:58:40,250 INFO L226 Difference]: Without dead ends: 1104 [2022-01-18 03:58:40,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:40,251 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 81 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:40,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 110 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:40,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2022-01-18 03:58:40,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 601. [2022-01-18 03:58:40,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 3.4066666666666667) internal successors, (2044), 600 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 2044 transitions. [2022-01-18 03:58:40,268 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 2044 transitions. Word has length 21 [2022-01-18 03:58:40,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:40,268 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 2044 transitions. [2022-01-18 03:58:40,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:40,269 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 2044 transitions. [2022-01-18 03:58:40,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:40,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:40,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:40,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 03:58:40,270 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:40,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:40,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1256430157, now seen corresponding path program 4 times [2022-01-18 03:58:40,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:40,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304399019] [2022-01-18 03:58:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:40,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:40,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:40,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304399019] [2022-01-18 03:58:40,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304399019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:40,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:40,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:40,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626014596] [2022-01-18 03:58:40,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:40,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:40,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:40,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:40,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:40,366 INFO L87 Difference]: Start difference. First operand 601 states and 2044 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:40,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:40,469 INFO L93 Difference]: Finished difference Result 1238 states and 3949 transitions. [2022-01-18 03:58:40,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:40,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:40,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:40,474 INFO L225 Difference]: With dead ends: 1238 [2022-01-18 03:58:40,474 INFO L226 Difference]: Without dead ends: 1084 [2022-01-18 03:58:40,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:40,475 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 82 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:40,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 107 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2022-01-18 03:58:40,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 581. [2022-01-18 03:58:40,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 3.4034482758620688) internal successors, (1974), 580 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:40,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1974 transitions. [2022-01-18 03:58:40,491 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1974 transitions. Word has length 21 [2022-01-18 03:58:40,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:40,492 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 1974 transitions. [2022-01-18 03:58:40,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1974 transitions. [2022-01-18 03:58:40,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:40,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:40,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:40,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 03:58:40,493 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:40,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:40,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1531922381, now seen corresponding path program 5 times [2022-01-18 03:58:40,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:40,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794881380] [2022-01-18 03:58:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:40,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:40,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:40,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794881380] [2022-01-18 03:58:40,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794881380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:40,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:40,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:40,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653060198] [2022-01-18 03:58:40,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:40,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:40,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:40,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:40,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:40,583 INFO L87 Difference]: Start difference. First operand 581 states and 1974 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:40,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:40,685 INFO L93 Difference]: Finished difference Result 1182 states and 3774 transitions. [2022-01-18 03:58:40,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:40,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:40,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:40,690 INFO L225 Difference]: With dead ends: 1182 [2022-01-18 03:58:40,690 INFO L226 Difference]: Without dead ends: 1079 [2022-01-18 03:58:40,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:40,691 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 95 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:40,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 90 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:40,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-01-18 03:58:40,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 593. [2022-01-18 03:58:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 3.3885135135135136) internal successors, (2006), 592 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:40,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 2006 transitions. [2022-01-18 03:58:40,707 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 2006 transitions. Word has length 21 [2022-01-18 03:58:40,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:40,707 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 2006 transitions. [2022-01-18 03:58:40,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:40,707 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 2006 transitions. [2022-01-18 03:58:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:40,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:40,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:40,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 03:58:40,709 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:40,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:40,709 INFO L85 PathProgramCache]: Analyzing trace with hash 598806989, now seen corresponding path program 6 times [2022-01-18 03:58:40,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:40,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911529752] [2022-01-18 03:58:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:40,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:40,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:40,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911529752] [2022-01-18 03:58:40,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911529752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:40,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:40,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:40,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266755200] [2022-01-18 03:58:40,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:40,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:40,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:40,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:40,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:40,799 INFO L87 Difference]: Start difference. First operand 593 states and 2006 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:40,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:40,905 INFO L93 Difference]: Finished difference Result 1196 states and 3811 transitions. [2022-01-18 03:58:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:40,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:40,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:40,910 INFO L225 Difference]: With dead ends: 1196 [2022-01-18 03:58:40,910 INFO L226 Difference]: Without dead ends: 1053 [2022-01-18 03:58:40,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:40,911 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 77 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:40,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 110 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:40,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-01-18 03:58:40,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 567. [2022-01-18 03:58:40,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 3.4240282685512367) internal successors, (1938), 566 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1938 transitions. [2022-01-18 03:58:40,926 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1938 transitions. Word has length 21 [2022-01-18 03:58:40,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:40,926 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 1938 transitions. [2022-01-18 03:58:40,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:40,926 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1938 transitions. [2022-01-18 03:58:40,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:40,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:40,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:40,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 03:58:40,928 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:40,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:40,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1078752725, now seen corresponding path program 7 times [2022-01-18 03:58:40,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:40,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806117999] [2022-01-18 03:58:40,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:40,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:41,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:41,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806117999] [2022-01-18 03:58:41,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806117999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:41,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:41,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:41,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647247872] [2022-01-18 03:58:41,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:41,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:41,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:41,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:41,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:41,018 INFO L87 Difference]: Start difference. First operand 567 states and 1938 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:41,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:41,107 INFO L93 Difference]: Finished difference Result 1298 states and 4181 transitions. [2022-01-18 03:58:41,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:41,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:41,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:41,112 INFO L225 Difference]: With dead ends: 1298 [2022-01-18 03:58:41,113 INFO L226 Difference]: Without dead ends: 1164 [2022-01-18 03:58:41,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:41,113 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 95 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:41,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 95 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:41,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-01-18 03:58:41,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 623. [2022-01-18 03:58:41,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 3.3858520900321545) internal successors, (2106), 622 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 2106 transitions. [2022-01-18 03:58:41,134 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 2106 transitions. Word has length 21 [2022-01-18 03:58:41,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:41,134 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 2106 transitions. [2022-01-18 03:58:41,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:41,135 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 2106 transitions. [2022-01-18 03:58:41,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:41,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:41,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:41,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 03:58:41,137 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:41,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:41,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1265958925, now seen corresponding path program 8 times [2022-01-18 03:58:41,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:41,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029617562] [2022-01-18 03:58:41,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:41,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:41,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:41,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029617562] [2022-01-18 03:58:41,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029617562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:41,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:41,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:41,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518081192] [2022-01-18 03:58:41,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:41,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:41,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:41,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:41,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:41,233 INFO L87 Difference]: Start difference. First operand 623 states and 2106 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:41,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:41,346 INFO L93 Difference]: Finished difference Result 1281 states and 4104 transitions. [2022-01-18 03:58:41,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:41,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:41,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:41,351 INFO L225 Difference]: With dead ends: 1281 [2022-01-18 03:58:41,352 INFO L226 Difference]: Without dead ends: 1129 [2022-01-18 03:58:41,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:41,352 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 78 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:41,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 107 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:41,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2022-01-18 03:58:41,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 588. [2022-01-18 03:58:41,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 3.4003407155025553) internal successors, (1996), 587 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1996 transitions. [2022-01-18 03:58:41,370 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1996 transitions. Word has length 21 [2022-01-18 03:58:41,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:41,370 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1996 transitions. [2022-01-18 03:58:41,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:41,370 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1996 transitions. [2022-01-18 03:58:41,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:41,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:41,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:41,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 03:58:41,371 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:41,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:41,372 INFO L85 PathProgramCache]: Analyzing trace with hash 560967501, now seen corresponding path program 9 times [2022-01-18 03:58:41,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:41,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166661808] [2022-01-18 03:58:41,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:41,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:41,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:41,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166661808] [2022-01-18 03:58:41,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166661808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:41,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:41,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:41,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308830159] [2022-01-18 03:58:41,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:41,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:41,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:41,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:41,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:41,479 INFO L87 Difference]: Start difference. First operand 588 states and 1996 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:41,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:41,554 INFO L93 Difference]: Finished difference Result 1287 states and 4136 transitions. [2022-01-18 03:58:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:41,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:41,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:41,559 INFO L225 Difference]: With dead ends: 1287 [2022-01-18 03:58:41,559 INFO L226 Difference]: Without dead ends: 1153 [2022-01-18 03:58:41,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:41,560 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 91 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:41,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 95 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2022-01-18 03:58:41,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 614. [2022-01-18 03:58:41,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 3.3719412724306688) internal successors, (2067), 613 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 2067 transitions. [2022-01-18 03:58:41,578 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 2067 transitions. Word has length 21 [2022-01-18 03:58:41,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:41,578 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 2067 transitions. [2022-01-18 03:58:41,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:41,578 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 2067 transitions. [2022-01-18 03:58:41,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:41,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:41,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:41,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 03:58:41,580 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:41,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:41,581 INFO L85 PathProgramCache]: Analyzing trace with hash -456976563, now seen corresponding path program 10 times [2022-01-18 03:58:41,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:41,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440320762] [2022-01-18 03:58:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:41,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:41,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:41,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440320762] [2022-01-18 03:58:41,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440320762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:41,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:41,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:41,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491110091] [2022-01-18 03:58:41,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:41,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:41,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:41,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:41,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:41,679 INFO L87 Difference]: Start difference. First operand 614 states and 2067 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:41,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:41,783 INFO L93 Difference]: Finished difference Result 1268 states and 4055 transitions. [2022-01-18 03:58:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:41,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:41,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:41,788 INFO L225 Difference]: With dead ends: 1268 [2022-01-18 03:58:41,788 INFO L226 Difference]: Without dead ends: 1127 [2022-01-18 03:58:41,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:41,789 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 85 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:41,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 104 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:41,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-01-18 03:58:41,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 588. [2022-01-18 03:58:41,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 3.3781942078364566) internal successors, (1983), 587 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1983 transitions. [2022-01-18 03:58:41,818 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1983 transitions. Word has length 21 [2022-01-18 03:58:41,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:41,818 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1983 transitions. [2022-01-18 03:58:41,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:41,818 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1983 transitions. [2022-01-18 03:58:41,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:41,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:41,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:41,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 03:58:41,820 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:41,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:41,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1368281937, now seen corresponding path program 11 times [2022-01-18 03:58:41,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:41,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149168593] [2022-01-18 03:58:41,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:41,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:41,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:41,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:41,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149168593] [2022-01-18 03:58:41,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149168593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:41,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:41,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:41,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087335778] [2022-01-18 03:58:41,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:41,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:41,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:41,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:41,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:41,899 INFO L87 Difference]: Start difference. First operand 588 states and 1983 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:41,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:41,994 INFO L93 Difference]: Finished difference Result 1245 states and 3995 transitions. [2022-01-18 03:58:41,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:41,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:41,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:41,999 INFO L225 Difference]: With dead ends: 1245 [2022-01-18 03:58:41,999 INFO L226 Difference]: Without dead ends: 1128 [2022-01-18 03:58:41,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:42,000 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 86 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:42,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 95 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:42,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-01-18 03:58:42,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 606. [2022-01-18 03:58:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 3.3619834710743803) internal successors, (2034), 605 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 2034 transitions. [2022-01-18 03:58:42,014 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 2034 transitions. Word has length 21 [2022-01-18 03:58:42,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:42,014 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 2034 transitions. [2022-01-18 03:58:42,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 2034 transitions. [2022-01-18 03:58:42,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:42,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:42,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:42,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 03:58:42,016 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:42,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1696664819, now seen corresponding path program 12 times [2022-01-18 03:58:42,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:42,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988521410] [2022-01-18 03:58:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:42,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:42,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:42,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988521410] [2022-01-18 03:58:42,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988521410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:42,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:42,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:42,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633847589] [2022-01-18 03:58:42,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:42,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:42,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:42,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:42,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:42,093 INFO L87 Difference]: Start difference. First operand 606 states and 2034 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:42,190 INFO L93 Difference]: Finished difference Result 1243 states and 3972 transitions. [2022-01-18 03:58:42,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:42,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:42,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:42,195 INFO L225 Difference]: With dead ends: 1243 [2022-01-18 03:58:42,195 INFO L226 Difference]: Without dead ends: 1089 [2022-01-18 03:58:42,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:42,195 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 81 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:42,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 99 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:42,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2022-01-18 03:58:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 567. [2022-01-18 03:58:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 3.408127208480565) internal successors, (1929), 566 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1929 transitions. [2022-01-18 03:58:42,208 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1929 transitions. Word has length 21 [2022-01-18 03:58:42,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:42,208 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 1929 transitions. [2022-01-18 03:58:42,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1929 transitions. [2022-01-18 03:58:42,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:42,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:42,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:42,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 03:58:42,210 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:42,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:42,210 INFO L85 PathProgramCache]: Analyzing trace with hash 467668587, now seen corresponding path program 13 times [2022-01-18 03:58:42,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:42,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781511136] [2022-01-18 03:58:42,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:42,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:42,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:42,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781511136] [2022-01-18 03:58:42,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781511136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:42,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:42,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:42,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872134733] [2022-01-18 03:58:42,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:42,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:42,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:42,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:42,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:42,289 INFO L87 Difference]: Start difference. First operand 567 states and 1929 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:42,398 INFO L93 Difference]: Finished difference Result 1192 states and 3820 transitions. [2022-01-18 03:58:42,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:42,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:42,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:42,401 INFO L225 Difference]: With dead ends: 1192 [2022-01-18 03:58:42,401 INFO L226 Difference]: Without dead ends: 1089 [2022-01-18 03:58:42,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:42,402 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 82 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:42,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 111 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:42,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2022-01-18 03:58:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 597. [2022-01-18 03:58:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 596 states have (on average 3.4060402684563758) internal successors, (2030), 596 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 2030 transitions. [2022-01-18 03:58:42,415 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 2030 transitions. Word has length 21 [2022-01-18 03:58:42,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:42,415 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 2030 transitions. [2022-01-18 03:58:42,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,415 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 2030 transitions. [2022-01-18 03:58:42,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:42,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:42,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:42,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-18 03:58:42,417 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:42,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:42,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1397758387, now seen corresponding path program 14 times [2022-01-18 03:58:42,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:42,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477251808] [2022-01-18 03:58:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:42,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:42,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:42,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477251808] [2022-01-18 03:58:42,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477251808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:42,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:42,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:42,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221011956] [2022-01-18 03:58:42,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:42,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:42,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:42,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:42,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:42,506 INFO L87 Difference]: Start difference. First operand 597 states and 2030 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:42,593 INFO L93 Difference]: Finished difference Result 1223 states and 3907 transitions. [2022-01-18 03:58:42,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:42,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:42,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:42,596 INFO L225 Difference]: With dead ends: 1223 [2022-01-18 03:58:42,596 INFO L226 Difference]: Without dead ends: 1069 [2022-01-18 03:58:42,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:42,596 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 80 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:42,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 108 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:42,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-01-18 03:58:42,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 577. [2022-01-18 03:58:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 3.4027777777777777) internal successors, (1960), 576 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1960 transitions. [2022-01-18 03:58:42,609 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1960 transitions. Word has length 21 [2022-01-18 03:58:42,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:42,609 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 1960 transitions. [2022-01-18 03:58:42,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,609 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1960 transitions. [2022-01-18 03:58:42,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:42,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:42,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:42,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 03:58:42,610 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:42,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:42,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1475966571, now seen corresponding path program 15 times [2022-01-18 03:58:42,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:42,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51374169] [2022-01-18 03:58:42,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:42,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:42,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:42,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51374169] [2022-01-18 03:58:42,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51374169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:42,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:42,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:42,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864220874] [2022-01-18 03:58:42,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:42,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:42,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:42,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:42,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:42,699 INFO L87 Difference]: Start difference. First operand 577 states and 1960 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:42,797 INFO L93 Difference]: Finished difference Result 1165 states and 3727 transitions. [2022-01-18 03:58:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:42,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:42,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:42,800 INFO L225 Difference]: With dead ends: 1165 [2022-01-18 03:58:42,800 INFO L226 Difference]: Without dead ends: 1062 [2022-01-18 03:58:42,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:42,800 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 82 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:42,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 106 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:42,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2022-01-18 03:58:42,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 589. [2022-01-18 03:58:42,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 588 states have (on average 3.3877551020408165) internal successors, (1992), 588 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 1992 transitions. [2022-01-18 03:58:42,812 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 1992 transitions. Word has length 21 [2022-01-18 03:58:42,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:42,812 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 1992 transitions. [2022-01-18 03:58:42,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,813 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 1992 transitions. [2022-01-18 03:58:42,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:42,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:42,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:42,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-18 03:58:42,814 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:42,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:42,814 INFO L85 PathProgramCache]: Analyzing trace with hash -135778197, now seen corresponding path program 16 times [2022-01-18 03:58:42,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:42,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982568897] [2022-01-18 03:58:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:42,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:42,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:42,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982568897] [2022-01-18 03:58:42,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982568897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:42,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:42,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:42,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409669437] [2022-01-18 03:58:42,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:42,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:42,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:42,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:42,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:42,888 INFO L87 Difference]: Start difference. First operand 589 states and 1992 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:42,976 INFO L93 Difference]: Finished difference Result 1177 states and 3759 transitions. [2022-01-18 03:58:42,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:42,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:42,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:42,979 INFO L225 Difference]: With dead ends: 1177 [2022-01-18 03:58:42,979 INFO L226 Difference]: Without dead ends: 1050 [2022-01-18 03:58:42,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:42,980 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 85 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:42,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 95 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:42,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-01-18 03:58:42,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 577. [2022-01-18 03:58:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 3.392361111111111) internal successors, (1954), 576 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1954 transitions. [2022-01-18 03:58:42,992 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1954 transitions. Word has length 21 [2022-01-18 03:58:42,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:42,992 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 1954 transitions. [2022-01-18 03:58:42,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:42,992 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1954 transitions. [2022-01-18 03:58:42,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:42,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:42,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:42,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 03:58:42,993 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:42,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:42,994 INFO L85 PathProgramCache]: Analyzing trace with hash -452479027, now seen corresponding path program 17 times [2022-01-18 03:58:42,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:42,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541241691] [2022-01-18 03:58:42,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:42,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:43,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:43,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541241691] [2022-01-18 03:58:43,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541241691] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:43,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:43,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:43,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572540596] [2022-01-18 03:58:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:43,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:43,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:43,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:43,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:43,073 INFO L87 Difference]: Start difference. First operand 577 states and 1954 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:43,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:43,164 INFO L93 Difference]: Finished difference Result 1241 states and 3972 transitions. [2022-01-18 03:58:43,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:43,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:43,167 INFO L225 Difference]: With dead ends: 1241 [2022-01-18 03:58:43,167 INFO L226 Difference]: Without dead ends: 1107 [2022-01-18 03:58:43,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:43,168 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 80 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:43,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 103 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:43,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-01-18 03:58:43,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 603. [2022-01-18 03:58:43,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 3.3637873754152823) internal successors, (2025), 602 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 2025 transitions. [2022-01-18 03:58:43,185 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 2025 transitions. Word has length 21 [2022-01-18 03:58:43,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:43,185 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 2025 transitions. [2022-01-18 03:58:43,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:43,185 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 2025 transitions. [2022-01-18 03:58:43,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:43,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:43,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:43,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-18 03:58:43,186 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:43,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:43,187 INFO L85 PathProgramCache]: Analyzing trace with hash -364542293, now seen corresponding path program 18 times [2022-01-18 03:58:43,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:43,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875342281] [2022-01-18 03:58:43,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:43,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:43,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:43,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875342281] [2022-01-18 03:58:43,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875342281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:43,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:43,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:43,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519688443] [2022-01-18 03:58:43,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:43,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:43,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:43,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:43,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:43,288 INFO L87 Difference]: Start difference. First operand 603 states and 2025 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:43,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:43,405 INFO L93 Difference]: Finished difference Result 1222 states and 3891 transitions. [2022-01-18 03:58:43,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:43,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:43,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:43,408 INFO L225 Difference]: With dead ends: 1222 [2022-01-18 03:58:43,408 INFO L226 Difference]: Without dead ends: 1071 [2022-01-18 03:58:43,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:43,409 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 78 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:43,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 110 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:43,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-01-18 03:58:43,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 567. [2022-01-18 03:58:43,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 3.3992932862190814) internal successors, (1924), 566 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:43,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1924 transitions. [2022-01-18 03:58:43,432 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1924 transitions. Word has length 21 [2022-01-18 03:58:43,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:43,432 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 1924 transitions. [2022-01-18 03:58:43,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:43,433 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1924 transitions. [2022-01-18 03:58:43,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:43,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:43,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:43,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-18 03:58:43,434 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:43,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:43,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1884830541, now seen corresponding path program 19 times [2022-01-18 03:58:43,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:43,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419816246] [2022-01-18 03:58:43,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:43,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:43,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:43,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419816246] [2022-01-18 03:58:43,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419816246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:43,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:43,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:43,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194444673] [2022-01-18 03:58:43,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:43,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:43,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:43,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:43,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:43,510 INFO L87 Difference]: Start difference. First operand 567 states and 1924 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:43,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:43,610 INFO L93 Difference]: Finished difference Result 1130 states and 3615 transitions. [2022-01-18 03:58:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:43,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:43,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:43,613 INFO L225 Difference]: With dead ends: 1130 [2022-01-18 03:58:43,613 INFO L226 Difference]: Without dead ends: 1027 [2022-01-18 03:58:43,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:43,614 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 90 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:43,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 95 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:43,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-01-18 03:58:43,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 585. [2022-01-18 03:58:43,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 3.392123287671233) internal successors, (1981), 584 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:43,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1981 transitions. [2022-01-18 03:58:43,625 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1981 transitions. Word has length 21 [2022-01-18 03:58:43,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:43,625 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 1981 transitions. [2022-01-18 03:58:43,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:43,625 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1981 transitions. [2022-01-18 03:58:43,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:43,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:43,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:43,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-18 03:58:43,626 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:43,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:43,627 INFO L85 PathProgramCache]: Analyzing trace with hash 951715149, now seen corresponding path program 20 times [2022-01-18 03:58:43,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:43,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809141698] [2022-01-18 03:58:43,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:43,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:43,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:43,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:43,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809141698] [2022-01-18 03:58:43,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809141698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:43,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:43,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:43,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946944007] [2022-01-18 03:58:43,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:43,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:43,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:43,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:43,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:43,703 INFO L87 Difference]: Start difference. First operand 585 states and 1981 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:43,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:43,783 INFO L93 Difference]: Finished difference Result 1144 states and 3652 transitions. [2022-01-18 03:58:43,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:43,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:43,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:43,786 INFO L225 Difference]: With dead ends: 1144 [2022-01-18 03:58:43,786 INFO L226 Difference]: Without dead ends: 1015 [2022-01-18 03:58:43,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:43,787 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 97 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:43,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 89 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:43,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-01-18 03:58:43,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 573. [2022-01-18 03:58:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 572 states have (on average 3.3968531468531467) internal successors, (1943), 572 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:43,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 1943 transitions. [2022-01-18 03:58:43,797 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 1943 transitions. Word has length 21 [2022-01-18 03:58:43,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:43,798 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 1943 transitions. [2022-01-18 03:58:43,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:43,798 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 1943 transitions. [2022-01-18 03:58:43,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:43,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:43,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:43,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-18 03:58:43,799 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:43,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:43,799 INFO L85 PathProgramCache]: Analyzing trace with hash -158506453, now seen corresponding path program 21 times [2022-01-18 03:58:43,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:43,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393883876] [2022-01-18 03:58:43,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:43,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:43,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:43,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393883876] [2022-01-18 03:58:43,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393883876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:43,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:43,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:43,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447001082] [2022-01-18 03:58:43,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:43,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:43,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:43,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:43,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:43,881 INFO L87 Difference]: Start difference. First operand 573 states and 1943 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:43,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:43,992 INFO L93 Difference]: Finished difference Result 1128 states and 3604 transitions. [2022-01-18 03:58:43,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:43,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:43,995 INFO L225 Difference]: With dead ends: 1128 [2022-01-18 03:58:43,995 INFO L226 Difference]: Without dead ends: 1025 [2022-01-18 03:58:43,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:43,997 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 75 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:43,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 116 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:43,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2022-01-18 03:58:44,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 585. [2022-01-18 03:58:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 3.381849315068493) internal successors, (1975), 584 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1975 transitions. [2022-01-18 03:58:44,008 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1975 transitions. Word has length 21 [2022-01-18 03:58:44,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:44,008 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 1975 transitions. [2022-01-18 03:58:44,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,008 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1975 transitions. [2022-01-18 03:58:44,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:44,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:44,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:44,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-18 03:58:44,010 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:44,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:44,010 INFO L85 PathProgramCache]: Analyzing trace with hash 945284429, now seen corresponding path program 22 times [2022-01-18 03:58:44,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:44,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662712423] [2022-01-18 03:58:44,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:44,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:44,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:44,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662712423] [2022-01-18 03:58:44,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662712423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:44,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:44,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:44,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181880349] [2022-01-18 03:58:44,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:44,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:44,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:44,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:44,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:44,100 INFO L87 Difference]: Start difference. First operand 585 states and 1975 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:44,190 INFO L93 Difference]: Finished difference Result 1140 states and 3636 transitions. [2022-01-18 03:58:44,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:44,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:44,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:44,193 INFO L225 Difference]: With dead ends: 1140 [2022-01-18 03:58:44,193 INFO L226 Difference]: Without dead ends: 1013 [2022-01-18 03:58:44,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:44,194 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 74 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:44,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 101 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:44,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-01-18 03:58:44,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 573. [2022-01-18 03:58:44,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 572 states have (on average 3.3863636363636362) internal successors, (1937), 572 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 1937 transitions. [2022-01-18 03:58:44,205 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 1937 transitions. Word has length 21 [2022-01-18 03:58:44,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:44,205 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 1937 transitions. [2022-01-18 03:58:44,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,205 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 1937 transitions. [2022-01-18 03:58:44,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:44,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:44,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:44,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-18 03:58:44,207 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:44,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:44,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1746780339, now seen corresponding path program 23 times [2022-01-18 03:58:44,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:44,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708558781] [2022-01-18 03:58:44,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:44,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:44,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:44,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708558781] [2022-01-18 03:58:44,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708558781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:44,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:44,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:44,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363740724] [2022-01-18 03:58:44,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:44,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:44,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:44,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:44,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:44,287 INFO L87 Difference]: Start difference. First operand 573 states and 1937 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:44,387 INFO L93 Difference]: Finished difference Result 1162 states and 3721 transitions. [2022-01-18 03:58:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:44,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:44,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:44,390 INFO L225 Difference]: With dead ends: 1162 [2022-01-18 03:58:44,390 INFO L226 Difference]: Without dead ends: 1045 [2022-01-18 03:58:44,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:44,391 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 77 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:44,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 100 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:44,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2022-01-18 03:58:44,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 591. [2022-01-18 03:58:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 3.369491525423729) internal successors, (1988), 590 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1988 transitions. [2022-01-18 03:58:44,403 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1988 transitions. Word has length 21 [2022-01-18 03:58:44,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:44,403 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 1988 transitions. [2022-01-18 03:58:44,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,403 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1988 transitions. [2022-01-18 03:58:44,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:44,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:44,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:44,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-18 03:58:44,404 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:44,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2075163221, now seen corresponding path program 24 times [2022-01-18 03:58:44,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:44,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745162170] [2022-01-18 03:58:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:44,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:44,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:44,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745162170] [2022-01-18 03:58:44,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745162170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:44,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:44,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:44,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372434365] [2022-01-18 03:58:44,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:44,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:44,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:44,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:44,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:44,480 INFO L87 Difference]: Start difference. First operand 591 states and 1988 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:44,571 INFO L93 Difference]: Finished difference Result 1160 states and 3698 transitions. [2022-01-18 03:58:44,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:44,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:44,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:44,574 INFO L225 Difference]: With dead ends: 1160 [2022-01-18 03:58:44,574 INFO L226 Difference]: Without dead ends: 1010 [2022-01-18 03:58:44,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:44,575 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 73 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:44,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 107 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:44,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2022-01-18 03:58:44,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 556. [2022-01-18 03:58:44,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 3.427027027027027) internal successors, (1902), 555 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1902 transitions. [2022-01-18 03:58:44,585 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1902 transitions. Word has length 21 [2022-01-18 03:58:44,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:44,585 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1902 transitions. [2022-01-18 03:58:44,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,586 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1902 transitions. [2022-01-18 03:58:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:44,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:44,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:44,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-18 03:58:44,587 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:44,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:44,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1181393139, now seen corresponding path program 25 times [2022-01-18 03:58:44,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:44,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187987913] [2022-01-18 03:58:44,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:44,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:44,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:44,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187987913] [2022-01-18 03:58:44,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187987913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:44,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:44,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:44,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611979577] [2022-01-18 03:58:44,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:44,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:44,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:44,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:44,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:44,661 INFO L87 Difference]: Start difference. First operand 556 states and 1902 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:44,754 INFO L93 Difference]: Finished difference Result 1242 states and 3976 transitions. [2022-01-18 03:58:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:44,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:44,757 INFO L225 Difference]: With dead ends: 1242 [2022-01-18 03:58:44,757 INFO L226 Difference]: Without dead ends: 1108 [2022-01-18 03:58:44,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:44,758 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 81 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:44,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 112 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:44,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-01-18 03:58:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 591. [2022-01-18 03:58:44,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 3.3813559322033897) internal successors, (1995), 590 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1995 transitions. [2022-01-18 03:58:44,769 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1995 transitions. Word has length 21 [2022-01-18 03:58:44,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:44,769 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 1995 transitions. [2022-01-18 03:58:44,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1995 transitions. [2022-01-18 03:58:44,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:44,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:44,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:44,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-18 03:58:44,771 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:44,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:44,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1163318511, now seen corresponding path program 26 times [2022-01-18 03:58:44,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:44,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280507206] [2022-01-18 03:58:44,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:44,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:44,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:44,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280507206] [2022-01-18 03:58:44,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280507206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:44,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:44,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:44,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602609557] [2022-01-18 03:58:44,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:44,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:44,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:44,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:44,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:44,863 INFO L87 Difference]: Start difference. First operand 591 states and 1995 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:44,960 INFO L93 Difference]: Finished difference Result 1225 states and 3899 transitions. [2022-01-18 03:58:44,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:44,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:44,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:44,963 INFO L225 Difference]: With dead ends: 1225 [2022-01-18 03:58:44,963 INFO L226 Difference]: Without dead ends: 1073 [2022-01-18 03:58:44,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:44,963 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 98 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:44,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 89 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:44,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-01-18 03:58:44,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 556. [2022-01-18 03:58:44,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 3.4018018018018017) internal successors, (1888), 555 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1888 transitions. [2022-01-18 03:58:44,987 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1888 transitions. Word has length 21 [2022-01-18 03:58:44,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:44,987 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1888 transitions. [2022-01-18 03:58:44,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:44,988 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1888 transitions. [2022-01-18 03:58:44,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:44,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:44,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:44,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-18 03:58:44,989 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:44,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:44,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1016057387, now seen corresponding path program 27 times [2022-01-18 03:58:44,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:44,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667196892] [2022-01-18 03:58:44,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:44,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:45,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:45,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667196892] [2022-01-18 03:58:45,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667196892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:45,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:45,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:45,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486351444] [2022-01-18 03:58:45,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:45,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:45,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:45,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:45,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:45,073 INFO L87 Difference]: Start difference. First operand 556 states and 1888 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:45,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:45,160 INFO L93 Difference]: Finished difference Result 1182 states and 3766 transitions. [2022-01-18 03:58:45,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:45,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:45,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:45,162 INFO L225 Difference]: With dead ends: 1182 [2022-01-18 03:58:45,162 INFO L226 Difference]: Without dead ends: 1079 [2022-01-18 03:58:45,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:45,163 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 88 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:45,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 96 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:45,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-01-18 03:58:45,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 576. [2022-01-18 03:58:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 3.3878260869565215) internal successors, (1948), 575 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1948 transitions. [2022-01-18 03:58:45,175 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1948 transitions. Word has length 21 [2022-01-18 03:58:45,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:45,175 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 1948 transitions. [2022-01-18 03:58:45,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:45,175 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1948 transitions. [2022-01-18 03:58:45,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:45,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:45,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:45,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-18 03:58:45,177 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:45,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:45,177 INFO L85 PathProgramCache]: Analyzing trace with hash -849369587, now seen corresponding path program 28 times [2022-01-18 03:58:45,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:45,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913393155] [2022-01-18 03:58:45,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:45,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:45,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:45,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:45,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913393155] [2022-01-18 03:58:45,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913393155] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:45,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:45,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:45,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515947887] [2022-01-18 03:58:45,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:45,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:45,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:45,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:45,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:45,260 INFO L87 Difference]: Start difference. First operand 576 states and 1948 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:45,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:45,343 INFO L93 Difference]: Finished difference Result 1213 states and 3853 transitions. [2022-01-18 03:58:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:45,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:45,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:45,346 INFO L225 Difference]: With dead ends: 1213 [2022-01-18 03:58:45,346 INFO L226 Difference]: Without dead ends: 1059 [2022-01-18 03:58:45,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:45,347 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 96 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:45,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 94 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:45,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-01-18 03:58:45,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 556. [2022-01-18 03:58:45,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 3.383783783783784) internal successors, (1878), 555 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:45,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1878 transitions. [2022-01-18 03:58:45,360 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1878 transitions. Word has length 21 [2022-01-18 03:58:45,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:45,360 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1878 transitions. [2022-01-18 03:58:45,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:45,360 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1878 transitions. [2022-01-18 03:58:45,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:45,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:45,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:45,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-18 03:58:45,361 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:45,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:45,362 INFO L85 PathProgramCache]: Analyzing trace with hash -573877363, now seen corresponding path program 29 times [2022-01-18 03:58:45,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:45,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247779230] [2022-01-18 03:58:45,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:45,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:45,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:45,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247779230] [2022-01-18 03:58:45,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247779230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:45,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:45,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:45,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55434067] [2022-01-18 03:58:45,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:45,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:45,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:45,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:45,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:45,435 INFO L87 Difference]: Start difference. First operand 556 states and 1878 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:45,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:45,521 INFO L93 Difference]: Finished difference Result 1157 states and 3678 transitions. [2022-01-18 03:58:45,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:45,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:45,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:45,523 INFO L225 Difference]: With dead ends: 1157 [2022-01-18 03:58:45,523 INFO L226 Difference]: Without dead ends: 1054 [2022-01-18 03:58:45,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:45,524 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 92 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:45,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 96 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:45,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2022-01-18 03:58:45,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 568. [2022-01-18 03:58:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 3.368606701940035) internal successors, (1910), 567 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1910 transitions. [2022-01-18 03:58:45,536 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1910 transitions. Word has length 21 [2022-01-18 03:58:45,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:45,536 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 1910 transitions. [2022-01-18 03:58:45,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:45,536 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1910 transitions. [2022-01-18 03:58:45,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:45,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:45,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:45,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-18 03:58:45,537 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:45,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:45,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1506992755, now seen corresponding path program 30 times [2022-01-18 03:58:45,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:45,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627808371] [2022-01-18 03:58:45,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:45,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:45,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:45,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627808371] [2022-01-18 03:58:45,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627808371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:45,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:45,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:45,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769431653] [2022-01-18 03:58:45,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:45,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:45,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:45,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:45,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:45,621 INFO L87 Difference]: Start difference. First operand 568 states and 1910 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:45,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:45,720 INFO L93 Difference]: Finished difference Result 1171 states and 3715 transitions. [2022-01-18 03:58:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:45,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:45,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:45,722 INFO L225 Difference]: With dead ends: 1171 [2022-01-18 03:58:45,722 INFO L226 Difference]: Without dead ends: 1028 [2022-01-18 03:58:45,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:45,723 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 86 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:45,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 101 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:45,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2022-01-18 03:58:45,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 542. [2022-01-18 03:58:45,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.406654343807763) internal successors, (1843), 541 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1843 transitions. [2022-01-18 03:58:45,734 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1843 transitions. Word has length 21 [2022-01-18 03:58:45,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:45,734 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 1843 transitions. [2022-01-18 03:58:45,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:45,734 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1843 transitions. [2022-01-18 03:58:45,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:45,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:45,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:45,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-18 03:58:45,735 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:45,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:45,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1140268139, now seen corresponding path program 31 times [2022-01-18 03:58:45,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:45,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350024336] [2022-01-18 03:58:45,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:45,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:45,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:45,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350024336] [2022-01-18 03:58:45,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350024336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:45,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:45,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:45,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264518076] [2022-01-18 03:58:45,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:45,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:45,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:45,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:45,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:45,813 INFO L87 Difference]: Start difference. First operand 542 states and 1843 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:45,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:45,896 INFO L93 Difference]: Finished difference Result 1207 states and 3850 transitions. [2022-01-18 03:58:45,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:45,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:45,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:45,898 INFO L225 Difference]: With dead ends: 1207 [2022-01-18 03:58:45,899 INFO L226 Difference]: Without dead ends: 1073 [2022-01-18 03:58:45,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:45,899 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 86 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:45,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 99 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:45,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-01-18 03:58:45,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 591. [2022-01-18 03:58:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 3.371186440677966) internal successors, (1989), 590 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:45,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1989 transitions. [2022-01-18 03:58:45,910 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1989 transitions. Word has length 21 [2022-01-18 03:58:45,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:45,910 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 1989 transitions. [2022-01-18 03:58:45,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:45,910 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1989 transitions. [2022-01-18 03:58:45,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:45,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:45,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:45,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-18 03:58:45,911 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:45,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:45,912 INFO L85 PathProgramCache]: Analyzing trace with hash -809987507, now seen corresponding path program 32 times [2022-01-18 03:58:45,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:45,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790320185] [2022-01-18 03:58:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:45,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:45,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:45,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790320185] [2022-01-18 03:58:45,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790320185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:45,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:45,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:45,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47296919] [2022-01-18 03:58:45,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:45,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:45,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:45,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:45,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:45,988 INFO L87 Difference]: Start difference. First operand 591 states and 1989 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:46,075 INFO L93 Difference]: Finished difference Result 1190 states and 3773 transitions. [2022-01-18 03:58:46,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:46,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:46,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:46,077 INFO L225 Difference]: With dead ends: 1190 [2022-01-18 03:58:46,078 INFO L226 Difference]: Without dead ends: 1038 [2022-01-18 03:58:46,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:46,078 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 83 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:46,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 93 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:46,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-01-18 03:58:46,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 556. [2022-01-18 03:58:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 3.390990990990991) internal successors, (1882), 555 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1882 transitions. [2022-01-18 03:58:46,088 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1882 transitions. Word has length 21 [2022-01-18 03:58:46,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:46,088 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1882 transitions. [2022-01-18 03:58:46,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,088 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1882 transitions. [2022-01-18 03:58:46,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:46,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:46,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:46,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-18 03:58:46,089 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:46,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:46,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1851976711, now seen corresponding path program 1 times [2022-01-18 03:58:46,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:46,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996687388] [2022-01-18 03:58:46,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:46,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:46,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:46,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996687388] [2022-01-18 03:58:46,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996687388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:46,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:46,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:58:46,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672305309] [2022-01-18 03:58:46,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:46,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:58:46,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:46,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:58:46,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:58:46,099 INFO L87 Difference]: Start difference. First operand 556 states and 1882 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:46,105 INFO L93 Difference]: Finished difference Result 473 states and 1551 transitions. [2022-01-18 03:58:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:58:46,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:46,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:46,106 INFO L225 Difference]: With dead ends: 473 [2022-01-18 03:58:46,106 INFO L226 Difference]: Without dead ends: 473 [2022-01-18 03:58:46,107 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 [2022-01-18 03:58:46,107 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:46,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 11 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:46,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-01-18 03:58:46,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2022-01-18 03:58:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 3.2860169491525424) internal successors, (1551), 472 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1551 transitions. [2022-01-18 03:58:46,115 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1551 transitions. Word has length 21 [2022-01-18 03:58:46,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:46,115 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 1551 transitions. [2022-01-18 03:58:46,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,115 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1551 transitions. [2022-01-18 03:58:46,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:46,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:46,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:46,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-18 03:58:46,116 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:46,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:46,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1742938129, now seen corresponding path program 33 times [2022-01-18 03:58:46,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:46,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791831643] [2022-01-18 03:58:46,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:46,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:46,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:46,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791831643] [2022-01-18 03:58:46,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791831643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:46,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:46,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:46,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984550254] [2022-01-18 03:58:46,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:46,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:46,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:46,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:46,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:46,217 INFO L87 Difference]: Start difference. First operand 473 states and 1551 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:46,293 INFO L93 Difference]: Finished difference Result 940 states and 2857 transitions. [2022-01-18 03:58:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:46,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:46,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:46,295 INFO L225 Difference]: With dead ends: 940 [2022-01-18 03:58:46,295 INFO L226 Difference]: Without dead ends: 861 [2022-01-18 03:58:46,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:46,295 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 72 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:46,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 106 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:46,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-01-18 03:58:46,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 489. [2022-01-18 03:58:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 3.276639344262295) internal successors, (1599), 488 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1599 transitions. [2022-01-18 03:58:46,303 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1599 transitions. Word has length 21 [2022-01-18 03:58:46,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:46,303 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 1599 transitions. [2022-01-18 03:58:46,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1599 transitions. [2022-01-18 03:58:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:46,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:46,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:46,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-18 03:58:46,305 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:46,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:46,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1414555247, now seen corresponding path program 34 times [2022-01-18 03:58:46,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:46,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942388583] [2022-01-18 03:58:46,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:46,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:46,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:46,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942388583] [2022-01-18 03:58:46,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942388583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:46,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:46,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:46,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374808275] [2022-01-18 03:58:46,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:46,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:46,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:46,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:46,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:46,380 INFO L87 Difference]: Start difference. First operand 489 states and 1599 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:46,443 INFO L93 Difference]: Finished difference Result 924 states and 2801 transitions. [2022-01-18 03:58:46,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:46,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:46,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:46,445 INFO L225 Difference]: With dead ends: 924 [2022-01-18 03:58:46,445 INFO L226 Difference]: Without dead ends: 798 [2022-01-18 03:58:46,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:46,445 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 79 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:46,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 91 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:46,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-01-18 03:58:46,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 473. [2022-01-18 03:58:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 3.2690677966101696) internal successors, (1543), 472 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1543 transitions. [2022-01-18 03:58:46,453 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1543 transitions. Word has length 21 [2022-01-18 03:58:46,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:46,454 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 1543 transitions. [2022-01-18 03:58:46,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,454 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1543 transitions. [2022-01-18 03:58:46,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:46,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:46,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:46,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-18 03:58:46,455 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:46,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:46,455 INFO L85 PathProgramCache]: Analyzing trace with hash -300398865, now seen corresponding path program 35 times [2022-01-18 03:58:46,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:46,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134600643] [2022-01-18 03:58:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:46,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:46,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:46,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134600643] [2022-01-18 03:58:46,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134600643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:46,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:46,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:46,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585499879] [2022-01-18 03:58:46,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:46,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:46,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:46,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:46,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:46,540 INFO L87 Difference]: Start difference. First operand 473 states and 1543 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:46,611 INFO L93 Difference]: Finished difference Result 915 states and 2771 transitions. [2022-01-18 03:58:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:46,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:46,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:46,613 INFO L225 Difference]: With dead ends: 915 [2022-01-18 03:58:46,613 INFO L226 Difference]: Without dead ends: 836 [2022-01-18 03:58:46,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:46,613 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 72 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:46,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 104 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:46,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-01-18 03:58:46,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 481. [2022-01-18 03:58:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 3.25625) internal successors, (1563), 480 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 1563 transitions. [2022-01-18 03:58:46,621 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 1563 transitions. Word has length 21 [2022-01-18 03:58:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:46,621 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 1563 transitions. [2022-01-18 03:58:46,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,621 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 1563 transitions. [2022-01-18 03:58:46,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:46,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:46,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:46,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-18 03:58:46,622 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:46,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:46,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1791893777, now seen corresponding path program 36 times [2022-01-18 03:58:46,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:46,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520596362] [2022-01-18 03:58:46,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:46,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:46,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:46,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520596362] [2022-01-18 03:58:46,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520596362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:46,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:46,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:46,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054016763] [2022-01-18 03:58:46,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:46,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:46,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:46,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:46,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:46,699 INFO L87 Difference]: Start difference. First operand 481 states and 1563 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:46,774 INFO L93 Difference]: Finished difference Result 899 states and 2715 transitions. [2022-01-18 03:58:46,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:46,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:46,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:46,776 INFO L225 Difference]: With dead ends: 899 [2022-01-18 03:58:46,776 INFO L226 Difference]: Without dead ends: 786 [2022-01-18 03:58:46,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:46,776 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 64 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:46,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 98 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:46,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-01-18 03:58:46,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 461. [2022-01-18 03:58:46,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 3.2891304347826087) internal successors, (1513), 460 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 1513 transitions. [2022-01-18 03:58:46,784 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 1513 transitions. Word has length 21 [2022-01-18 03:58:46,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:46,784 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 1513 transitions. [2022-01-18 03:58:46,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,784 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 1513 transitions. [2022-01-18 03:58:46,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:46,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:46,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:46,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-18 03:58:46,787 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:46,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:46,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1558519343, now seen corresponding path program 37 times [2022-01-18 03:58:46,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:46,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583078228] [2022-01-18 03:58:46,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:46,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:46,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:46,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:46,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583078228] [2022-01-18 03:58:46,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583078228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:46,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:46,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:46,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719014822] [2022-01-18 03:58:46,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:46,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:46,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:46,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:46,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:46,868 INFO L87 Difference]: Start difference. First operand 461 states and 1513 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:46,963 INFO L93 Difference]: Finished difference Result 927 states and 2839 transitions. [2022-01-18 03:58:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:46,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:46,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:46,966 INFO L225 Difference]: With dead ends: 927 [2022-01-18 03:58:46,966 INFO L226 Difference]: Without dead ends: 840 [2022-01-18 03:58:46,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:46,966 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 83 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:46,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 94 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-01-18 03:58:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 477. [2022-01-18 03:58:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 3.28781512605042) internal successors, (1565), 476 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 1565 transitions. [2022-01-18 03:58:46,975 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 1565 transitions. Word has length 21 [2022-01-18 03:58:46,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:46,975 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 1565 transitions. [2022-01-18 03:58:46,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 1565 transitions. [2022-01-18 03:58:46,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:46,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:46,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:46,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-18 03:58:46,976 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:46,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:46,976 INFO L85 PathProgramCache]: Analyzing trace with hash -777725515, now seen corresponding path program 38 times [2022-01-18 03:58:46,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:46,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301039306] [2022-01-18 03:58:46,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:46,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:47,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:47,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301039306] [2022-01-18 03:58:47,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301039306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:47,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:47,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:47,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528392729] [2022-01-18 03:58:47,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:47,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:47,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:47,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:47,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:47,051 INFO L87 Difference]: Start difference. First operand 477 states and 1565 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:47,121 INFO L93 Difference]: Finished difference Result 919 states and 2803 transitions. [2022-01-18 03:58:47,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:47,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:47,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:47,123 INFO L225 Difference]: With dead ends: 919 [2022-01-18 03:58:47,123 INFO L226 Difference]: Without dead ends: 832 [2022-01-18 03:58:47,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:47,124 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 74 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:47,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 106 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-01-18 03:58:47,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 469. [2022-01-18 03:58:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 3.2927350427350426) internal successors, (1541), 468 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1541 transitions. [2022-01-18 03:58:47,131 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1541 transitions. Word has length 21 [2022-01-18 03:58:47,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:47,131 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 1541 transitions. [2022-01-18 03:58:47,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,132 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1541 transitions. [2022-01-18 03:58:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:47,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:47,132 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] [2022-01-18 03:58:47,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-18 03:58:47,133 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:47,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:47,133 INFO L85 PathProgramCache]: Analyzing trace with hash -484817651, now seen corresponding path program 39 times [2022-01-18 03:58:47,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:47,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345438502] [2022-01-18 03:58:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:47,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:47,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:47,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:47,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345438502] [2022-01-18 03:58:47,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345438502] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:47,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:47,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:47,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905591087] [2022-01-18 03:58:47,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:47,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:47,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:47,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:47,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:47,220 INFO L87 Difference]: Start difference. First operand 469 states and 1541 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:47,294 INFO L93 Difference]: Finished difference Result 950 states and 2902 transitions. [2022-01-18 03:58:47,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:47,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:47,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:47,296 INFO L225 Difference]: With dead ends: 950 [2022-01-18 03:58:47,296 INFO L226 Difference]: Without dead ends: 863 [2022-01-18 03:58:47,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:47,296 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 79 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:47,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 102 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:47,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-01-18 03:58:47,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 489. [2022-01-18 03:58:47,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 3.2807377049180326) internal successors, (1601), 488 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1601 transitions. [2022-01-18 03:58:47,305 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1601 transitions. Word has length 21 [2022-01-18 03:58:47,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:47,305 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 1601 transitions. [2022-01-18 03:58:47,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,306 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1601 transitions. [2022-01-18 03:58:47,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:47,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:47,306 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] [2022-01-18 03:58:47,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-18 03:58:47,307 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:47,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:47,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1760141457, now seen corresponding path program 40 times [2022-01-18 03:58:47,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:47,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789905814] [2022-01-18 03:58:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:47,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:47,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:47,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789905814] [2022-01-18 03:58:47,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789905814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:47,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:47,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:47,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182715215] [2022-01-18 03:58:47,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:47,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:47,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:47,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:47,398 INFO L87 Difference]: Start difference. First operand 489 states and 1601 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:47,460 INFO L93 Difference]: Finished difference Result 973 states and 2957 transitions. [2022-01-18 03:58:47,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:47,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:47,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:47,462 INFO L225 Difference]: With dead ends: 973 [2022-01-18 03:58:47,462 INFO L226 Difference]: Without dead ends: 843 [2022-01-18 03:58:47,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:47,463 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 87 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:47,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 88 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:47,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-01-18 03:58:47,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 469. [2022-01-18 03:58:47,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 3.2756410256410255) internal successors, (1533), 468 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1533 transitions. [2022-01-18 03:58:47,470 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1533 transitions. Word has length 21 [2022-01-18 03:58:47,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:47,471 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 1533 transitions. [2022-01-18 03:58:47,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,471 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1533 transitions. [2022-01-18 03:58:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:47,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:47,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:47,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-18 03:58:47,472 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:47,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:47,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1130865005, now seen corresponding path program 41 times [2022-01-18 03:58:47,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:47,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267433510] [2022-01-18 03:58:47,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:47,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:47,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:47,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267433510] [2022-01-18 03:58:47,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267433510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:47,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:47,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:47,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092358508] [2022-01-18 03:58:47,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:47,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:47,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:47,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:47,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:47,555 INFO L87 Difference]: Start difference. First operand 469 states and 1533 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:47,615 INFO L93 Difference]: Finished difference Result 930 states and 2822 transitions. [2022-01-18 03:58:47,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:47,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:47,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:47,617 INFO L225 Difference]: With dead ends: 930 [2022-01-18 03:58:47,617 INFO L226 Difference]: Without dead ends: 851 [2022-01-18 03:58:47,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:47,617 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 77 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:47,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 91 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:47,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-01-18 03:58:47,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 485. [2022-01-18 03:58:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 3.2665289256198347) internal successors, (1581), 484 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1581 transitions. [2022-01-18 03:58:47,625 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1581 transitions. Word has length 21 [2022-01-18 03:58:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:47,625 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 1581 transitions. [2022-01-18 03:58:47,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,625 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1581 transitions. [2022-01-18 03:58:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:47,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:47,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:47,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-18 03:58:47,626 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:47,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:47,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1574167541, now seen corresponding path program 42 times [2022-01-18 03:58:47,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:47,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318632169] [2022-01-18 03:58:47,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:47,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:47,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:47,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:47,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318632169] [2022-01-18 03:58:47,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318632169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:47,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:47,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:47,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062582914] [2022-01-18 03:58:47,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:47,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:47,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:47,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:47,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:47,719 INFO L87 Difference]: Start difference. First operand 485 states and 1581 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:47,785 INFO L93 Difference]: Finished difference Result 914 states and 2766 transitions. [2022-01-18 03:58:47,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:47,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:47,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:47,786 INFO L225 Difference]: With dead ends: 914 [2022-01-18 03:58:47,787 INFO L226 Difference]: Without dead ends: 780 [2022-01-18 03:58:47,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:47,787 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 67 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:47,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 100 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:47,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-01-18 03:58:47,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 461. [2022-01-18 03:58:47,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 3.2804347826086957) internal successors, (1509), 460 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 1509 transitions. [2022-01-18 03:58:47,794 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 1509 transitions. Word has length 21 [2022-01-18 03:58:47,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:47,794 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 1509 transitions. [2022-01-18 03:58:47,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,794 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 1509 transitions. [2022-01-18 03:58:47,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:47,795 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:47,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:47,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-18 03:58:47,795 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:47,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:47,796 INFO L85 PathProgramCache]: Analyzing trace with hash 711722381, now seen corresponding path program 43 times [2022-01-18 03:58:47,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:47,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491187689] [2022-01-18 03:58:47,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:47,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:47,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:47,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491187689] [2022-01-18 03:58:47,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491187689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:47,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:47,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:47,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728071359] [2022-01-18 03:58:47,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:47,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:47,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:47,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:47,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:47,873 INFO L87 Difference]: Start difference. First operand 461 states and 1509 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:47,956 INFO L93 Difference]: Finished difference Result 890 states and 2713 transitions. [2022-01-18 03:58:47,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:47,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:47,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:47,958 INFO L225 Difference]: With dead ends: 890 [2022-01-18 03:58:47,958 INFO L226 Difference]: Without dead ends: 803 [2022-01-18 03:58:47,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:47,959 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 71 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:47,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 105 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:47,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-01-18 03:58:47,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 473. [2022-01-18 03:58:47,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 3.2733050847457625) internal successors, (1545), 472 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1545 transitions. [2022-01-18 03:58:47,966 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1545 transitions. Word has length 21 [2022-01-18 03:58:47,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:47,966 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 1545 transitions. [2022-01-18 03:58:47,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:47,966 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1545 transitions. [2022-01-18 03:58:47,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:47,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:47,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:47,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-18 03:58:47,967 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:47,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:47,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1624522477, now seen corresponding path program 44 times [2022-01-18 03:58:47,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:47,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600958647] [2022-01-18 03:58:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:47,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:48,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:48,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600958647] [2022-01-18 03:58:48,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600958647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:48,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:48,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:48,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770852224] [2022-01-18 03:58:48,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:48,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:48,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:48,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:48,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:48,051 INFO L87 Difference]: Start difference. First operand 473 states and 1545 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:48,125 INFO L93 Difference]: Finished difference Result 882 states and 2677 transitions. [2022-01-18 03:58:48,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:48,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:48,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:48,127 INFO L225 Difference]: With dead ends: 882 [2022-01-18 03:58:48,127 INFO L226 Difference]: Without dead ends: 795 [2022-01-18 03:58:48,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:48,127 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 80 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:48,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 96 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:48,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-01-18 03:58:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 465. [2022-01-18 03:58:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 3.2780172413793105) internal successors, (1521), 464 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1521 transitions. [2022-01-18 03:58:48,135 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1521 transitions. Word has length 21 [2022-01-18 03:58:48,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:48,135 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 1521 transitions. [2022-01-18 03:58:48,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1521 transitions. [2022-01-18 03:58:48,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:48,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:48,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:48,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-18 03:58:48,136 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:48,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:48,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1904188813, now seen corresponding path program 45 times [2022-01-18 03:58:48,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:48,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3717570] [2022-01-18 03:58:48,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:48,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:48,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:48,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3717570] [2022-01-18 03:58:48,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3717570] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:48,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:48,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:48,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198362280] [2022-01-18 03:58:48,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:48,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:48,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:48,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:48,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:48,218 INFO L87 Difference]: Start difference. First operand 465 states and 1521 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:48,290 INFO L93 Difference]: Finished difference Result 896 states and 2726 transitions. [2022-01-18 03:58:48,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:48,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:48,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:48,291 INFO L225 Difference]: With dead ends: 896 [2022-01-18 03:58:48,292 INFO L226 Difference]: Without dead ends: 809 [2022-01-18 03:58:48,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:48,292 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 74 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:48,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 101 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:48,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-01-18 03:58:48,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 477. [2022-01-18 03:58:48,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 3.2626050420168067) internal successors, (1553), 476 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 1553 transitions. [2022-01-18 03:58:48,300 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 1553 transitions. Word has length 21 [2022-01-18 03:58:48,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:48,300 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 1553 transitions. [2022-01-18 03:58:48,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,300 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 1553 transitions. [2022-01-18 03:58:48,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:48,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:48,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:48,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-18 03:58:48,301 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:48,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:48,301 INFO L85 PathProgramCache]: Analyzing trace with hash -28758161, now seen corresponding path program 46 times [2022-01-18 03:58:48,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:48,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844376201] [2022-01-18 03:58:48,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:48,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:48,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:48,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844376201] [2022-01-18 03:58:48,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844376201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:48,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:48,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:48,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629166781] [2022-01-18 03:58:48,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:48,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:48,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:48,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:48,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:48,385 INFO L87 Difference]: Start difference. First operand 477 states and 1553 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:48,460 INFO L93 Difference]: Finished difference Result 902 states and 2731 transitions. [2022-01-18 03:58:48,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:48,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:48,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:48,462 INFO L225 Difference]: With dead ends: 902 [2022-01-18 03:58:48,462 INFO L226 Difference]: Without dead ends: 797 [2022-01-18 03:58:48,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:48,462 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 69 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:48,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 101 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:48,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-01-18 03:58:48,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 465. [2022-01-18 03:58:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 3.269396551724138) internal successors, (1517), 464 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1517 transitions. [2022-01-18 03:58:48,469 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1517 transitions. Word has length 21 [2022-01-18 03:58:48,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:48,470 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 1517 transitions. [2022-01-18 03:58:48,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,470 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1517 transitions. [2022-01-18 03:58:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:48,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:48,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:48,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-18 03:58:48,471 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:48,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:48,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1258141459, now seen corresponding path program 47 times [2022-01-18 03:58:48,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:48,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594868695] [2022-01-18 03:58:48,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:48,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:48,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:48,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:48,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594868695] [2022-01-18 03:58:48,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594868695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:48,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:48,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:48,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426822974] [2022-01-18 03:58:48,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:48,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:48,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:48,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:48,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:48,554 INFO L87 Difference]: Start difference. First operand 465 states and 1517 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:48,615 INFO L93 Difference]: Finished difference Result 876 states and 2650 transitions. [2022-01-18 03:58:48,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:48,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:48,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:48,617 INFO L225 Difference]: With dead ends: 876 [2022-01-18 03:58:48,617 INFO L226 Difference]: Without dead ends: 797 [2022-01-18 03:58:48,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:48,618 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 67 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:48,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 105 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:48,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-01-18 03:58:48,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 473. [2022-01-18 03:58:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 3.2563559322033897) internal successors, (1537), 472 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1537 transitions. [2022-01-18 03:58:48,625 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1537 transitions. Word has length 21 [2022-01-18 03:58:48,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:48,625 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 1537 transitions. [2022-01-18 03:58:48,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,625 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1537 transitions. [2022-01-18 03:58:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:48,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:48,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:48,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-18 03:58:48,626 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:48,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:48,626 INFO L85 PathProgramCache]: Analyzing trace with hash -310787083, now seen corresponding path program 48 times [2022-01-18 03:58:48,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:48,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531435681] [2022-01-18 03:58:48,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:48,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:48,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:48,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531435681] [2022-01-18 03:58:48,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531435681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:48,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:48,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:48,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285507305] [2022-01-18 03:58:48,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:48,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:48,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:48,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:48,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:48,712 INFO L87 Difference]: Start difference. First operand 473 states and 1537 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:48,780 INFO L93 Difference]: Finished difference Result 860 states and 2594 transitions. [2022-01-18 03:58:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:48,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:48,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:48,782 INFO L225 Difference]: With dead ends: 860 [2022-01-18 03:58:48,782 INFO L226 Difference]: Without dead ends: 749 [2022-01-18 03:58:48,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:48,782 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 67 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:48,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 91 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:48,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-01-18 03:58:48,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 455. [2022-01-18 03:58:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 3.297356828193833) internal successors, (1497), 454 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 1497 transitions. [2022-01-18 03:58:48,790 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 1497 transitions. Word has length 21 [2022-01-18 03:58:48,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:48,790 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 1497 transitions. [2022-01-18 03:58:48,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,790 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1497 transitions. [2022-01-18 03:58:48,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:48,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:48,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:48,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-18 03:58:48,791 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:48,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:48,791 INFO L85 PathProgramCache]: Analyzing trace with hash 249500617, now seen corresponding path program 49 times [2022-01-18 03:58:48,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:48,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935983793] [2022-01-18 03:58:48,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:48,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:48,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:48,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:48,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935983793] [2022-01-18 03:58:48,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935983793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:48,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:48,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:48,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547031624] [2022-01-18 03:58:48,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:48,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:48,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:48,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:48,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:48,887 INFO L87 Difference]: Start difference. First operand 455 states and 1497 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:48,961 INFO L93 Difference]: Finished difference Result 982 states and 2989 transitions. [2022-01-18 03:58:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:48,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:48,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:48,963 INFO L225 Difference]: With dead ends: 982 [2022-01-18 03:58:48,963 INFO L226 Difference]: Without dead ends: 872 [2022-01-18 03:58:48,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:48,964 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 83 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:48,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 94 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:48,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-01-18 03:58:48,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 486. [2022-01-18 03:58:48,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 3.2494845360824742) internal successors, (1576), 485 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1576 transitions. [2022-01-18 03:58:48,971 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1576 transitions. Word has length 21 [2022-01-18 03:58:48,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:48,972 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 1576 transitions. [2022-01-18 03:58:48,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:48,972 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1576 transitions. [2022-01-18 03:58:48,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:48,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:48,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:48,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-18 03:58:48,973 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:48,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:48,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1700755029, now seen corresponding path program 50 times [2022-01-18 03:58:48,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:48,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100554457] [2022-01-18 03:58:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:48,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:49,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:49,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100554457] [2022-01-18 03:58:49,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100554457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:49,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:49,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:49,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937469268] [2022-01-18 03:58:49,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:49,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:49,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:49,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:49,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:49,053 INFO L87 Difference]: Start difference. First operand 486 states and 1576 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:49,146 INFO L93 Difference]: Finished difference Result 965 states and 2916 transitions. [2022-01-18 03:58:49,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:49,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:49,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:49,148 INFO L225 Difference]: With dead ends: 965 [2022-01-18 03:58:49,148 INFO L226 Difference]: Without dead ends: 841 [2022-01-18 03:58:49,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:49,148 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 68 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:49,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 98 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:49,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-01-18 03:58:49,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 455. [2022-01-18 03:58:49,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 3.2709251101321586) internal successors, (1485), 454 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 1485 transitions. [2022-01-18 03:58:49,156 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 1485 transitions. Word has length 21 [2022-01-18 03:58:49,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:49,157 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 1485 transitions. [2022-01-18 03:58:49,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,157 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1485 transitions. [2022-01-18 03:58:49,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:49,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:49,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:49,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-18 03:58:49,158 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:49,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:49,158 INFO L85 PathProgramCache]: Analyzing trace with hash 852170607, now seen corresponding path program 51 times [2022-01-18 03:58:49,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:49,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477579855] [2022-01-18 03:58:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:49,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:49,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:49,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477579855] [2022-01-18 03:58:49,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477579855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:49,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:49,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:49,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245495735] [2022-01-18 03:58:49,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:49,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:49,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:49,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:49,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:49,235 INFO L87 Difference]: Start difference. First operand 455 states and 1485 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:49,302 INFO L93 Difference]: Finished difference Result 922 states and 2791 transitions. [2022-01-18 03:58:49,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:49,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:49,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:49,304 INFO L225 Difference]: With dead ends: 922 [2022-01-18 03:58:49,304 INFO L226 Difference]: Without dead ends: 843 [2022-01-18 03:58:49,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:49,304 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 77 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:49,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 88 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:49,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-01-18 03:58:49,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 471. [2022-01-18 03:58:49,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 3.2617021276595746) internal successors, (1533), 470 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 1533 transitions. [2022-01-18 03:58:49,312 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 1533 transitions. Word has length 21 [2022-01-18 03:58:49,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:49,313 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 1533 transitions. [2022-01-18 03:58:49,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 1533 transitions. [2022-01-18 03:58:49,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:49,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:49,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:49,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-18 03:58:49,314 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:49,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:49,314 INFO L85 PathProgramCache]: Analyzing trace with hash 523787725, now seen corresponding path program 52 times [2022-01-18 03:58:49,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:49,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000956122] [2022-01-18 03:58:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:49,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:49,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:49,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000956122] [2022-01-18 03:58:49,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000956122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:49,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:49,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:49,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537708955] [2022-01-18 03:58:49,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:49,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:49,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:49,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:49,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:49,403 INFO L87 Difference]: Start difference. First operand 471 states and 1533 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:49,469 INFO L93 Difference]: Finished difference Result 953 states and 2878 transitions. [2022-01-18 03:58:49,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:49,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:49,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:49,471 INFO L225 Difference]: With dead ends: 953 [2022-01-18 03:58:49,471 INFO L226 Difference]: Without dead ends: 827 [2022-01-18 03:58:49,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:49,471 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 76 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:49,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 91 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:49,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-01-18 03:58:49,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 455. [2022-01-18 03:58:49,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 3.253303964757709) internal successors, (1477), 454 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 1477 transitions. [2022-01-18 03:58:49,478 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 1477 transitions. Word has length 21 [2022-01-18 03:58:49,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:49,478 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 1477 transitions. [2022-01-18 03:58:49,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1477 transitions. [2022-01-18 03:58:49,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:49,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:49,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:49,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-18 03:58:49,479 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:49,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:49,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1191166387, now seen corresponding path program 53 times [2022-01-18 03:58:49,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:49,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866130789] [2022-01-18 03:58:49,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:49,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:49,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:49,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866130789] [2022-01-18 03:58:49,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866130789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:49,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:49,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:49,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774483747] [2022-01-18 03:58:49,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:49,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:49,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:49,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:49,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:49,558 INFO L87 Difference]: Start difference. First operand 455 states and 1477 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:49,622 INFO L93 Difference]: Finished difference Result 897 states and 2705 transitions. [2022-01-18 03:58:49,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:49,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:49,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:49,623 INFO L225 Difference]: With dead ends: 897 [2022-01-18 03:58:49,624 INFO L226 Difference]: Without dead ends: 818 [2022-01-18 03:58:49,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:49,624 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 71 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:49,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 94 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:49,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-01-18 03:58:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 463. [2022-01-18 03:58:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 3.24025974025974) internal successors, (1497), 462 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1497 transitions. [2022-01-18 03:58:49,631 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1497 transitions. Word has length 21 [2022-01-18 03:58:49,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:49,631 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 1497 transitions. [2022-01-18 03:58:49,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,632 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1497 transitions. [2022-01-18 03:58:49,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:49,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:49,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:49,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-18 03:58:49,633 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:49,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1612305997, now seen corresponding path program 54 times [2022-01-18 03:58:49,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:49,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329489128] [2022-01-18 03:58:49,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:49,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:49,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:49,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:49,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329489128] [2022-01-18 03:58:49,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329489128] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:49,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:49,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:49,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335155225] [2022-01-18 03:58:49,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:49,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:49,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:49,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:49,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:49,712 INFO L87 Difference]: Start difference. First operand 463 states and 1497 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:49,797 INFO L93 Difference]: Finished difference Result 911 states and 2742 transitions. [2022-01-18 03:58:49,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:49,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:49,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:49,799 INFO L225 Difference]: With dead ends: 911 [2022-01-18 03:58:49,799 INFO L226 Difference]: Without dead ends: 798 [2022-01-18 03:58:49,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:49,800 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 69 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:49,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 99 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:49,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-01-18 03:58:49,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 443. [2022-01-18 03:58:49,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 3.273755656108597) internal successors, (1447), 442 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1447 transitions. [2022-01-18 03:58:49,807 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1447 transitions. Word has length 21 [2022-01-18 03:58:49,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:49,807 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 1447 transitions. [2022-01-18 03:58:49,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,807 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1447 transitions. [2022-01-18 03:58:49,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:49,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:49,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:49,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-18 03:58:49,808 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:49,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:49,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1342133931, now seen corresponding path program 55 times [2022-01-18 03:58:49,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:49,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700501247] [2022-01-18 03:58:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:49,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:49,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:49,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700501247] [2022-01-18 03:58:49,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700501247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:49,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:49,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:49,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145195826] [2022-01-18 03:58:49,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:49,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:49,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:49,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:49,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:49,886 INFO L87 Difference]: Start difference. First operand 443 states and 1447 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:49,958 INFO L93 Difference]: Finished difference Result 963 states and 2923 transitions. [2022-01-18 03:58:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:49,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:49,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:49,960 INFO L225 Difference]: With dead ends: 963 [2022-01-18 03:58:49,960 INFO L226 Difference]: Without dead ends: 853 [2022-01-18 03:58:49,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:49,961 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 73 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:49,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 93 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:49,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-01-18 03:58:49,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 443. [2022-01-18 03:58:49,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 3.2217194570135748) internal successors, (1424), 442 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1424 transitions. [2022-01-18 03:58:49,967 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1424 transitions. Word has length 21 [2022-01-18 03:58:49,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:49,968 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 1424 transitions. [2022-01-18 03:58:49,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:49,968 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1424 transitions. [2022-01-18 03:58:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:49,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:49,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:49,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-18 03:58:49,969 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:49,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:49,969 INFO L85 PathProgramCache]: Analyzing trace with hash -608121715, now seen corresponding path program 56 times [2022-01-18 03:58:49,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:49,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531468248] [2022-01-18 03:58:49,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:49,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:50,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:50,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531468248] [2022-01-18 03:58:50,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531468248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:50,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:50,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:50,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157677796] [2022-01-18 03:58:50,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:50,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:50,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:50,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:50,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:50,048 INFO L87 Difference]: Start difference. First operand 443 states and 1424 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:50,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:50,117 INFO L93 Difference]: Finished difference Result 946 states and 2850 transitions. [2022-01-18 03:58:50,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:50,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:50,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:50,119 INFO L225 Difference]: With dead ends: 946 [2022-01-18 03:58:50,119 INFO L226 Difference]: Without dead ends: 822 [2022-01-18 03:58:50,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:50,119 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 76 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:50,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 87 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:50,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-01-18 03:58:50,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 412. [2022-01-18 03:58:50,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 3.236009732360097) internal successors, (1330), 411 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:50,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1330 transitions. [2022-01-18 03:58:50,126 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1330 transitions. Word has length 21 [2022-01-18 03:58:50,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:50,126 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 1330 transitions. [2022-01-18 03:58:50,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:50,126 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1330 transitions. [2022-01-18 03:58:50,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:50,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:50,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:50,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-18 03:58:50,127 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:50,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:50,127 INFO L85 PathProgramCache]: Analyzing trace with hash 933914859, now seen corresponding path program 57 times [2022-01-18 03:58:50,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:50,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845471631] [2022-01-18 03:58:50,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:50,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:50,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:50,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845471631] [2022-01-18 03:58:50,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845471631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:50,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:50,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:50,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52895658] [2022-01-18 03:58:50,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:50,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:50,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:50,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:50,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:50,211 INFO L87 Difference]: Start difference. First operand 412 states and 1330 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:50,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:50,286 INFO L93 Difference]: Finished difference Result 905 states and 2737 transitions. [2022-01-18 03:58:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:50,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:50,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:50,287 INFO L225 Difference]: With dead ends: 905 [2022-01-18 03:58:50,287 INFO L226 Difference]: Without dead ends: 795 [2022-01-18 03:58:50,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:50,288 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 70 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:50,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 105 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:50,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-01-18 03:58:50,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 434. [2022-01-18 03:58:50,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 3.203233256351039) internal successors, (1387), 433 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1387 transitions. [2022-01-18 03:58:50,295 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1387 transitions. Word has length 21 [2022-01-18 03:58:50,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:50,295 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1387 transitions. [2022-01-18 03:58:50,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1387 transitions. [2022-01-18 03:58:50,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:50,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:50,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:50,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-18 03:58:50,296 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:50,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:50,296 INFO L85 PathProgramCache]: Analyzing trace with hash -84029205, now seen corresponding path program 58 times [2022-01-18 03:58:50,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:50,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498193631] [2022-01-18 03:58:50,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:50,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:50,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:50,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498193631] [2022-01-18 03:58:50,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498193631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:50,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:50,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:50,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138375831] [2022-01-18 03:58:50,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:50,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:50,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:50,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:50,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:50,374 INFO L87 Difference]: Start difference. First operand 434 states and 1387 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:50,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:50,462 INFO L93 Difference]: Finished difference Result 822 states and 2499 transitions. [2022-01-18 03:58:50,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:50,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:50,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:50,463 INFO L225 Difference]: With dead ends: 822 [2022-01-18 03:58:50,463 INFO L226 Difference]: Without dead ends: 709 [2022-01-18 03:58:50,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:50,464 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 67 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:50,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 102 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:50,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-01-18 03:58:50,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 412. [2022-01-18 03:58:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 3.2092457420924574) internal successors, (1319), 411 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:50,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1319 transitions. [2022-01-18 03:58:50,471 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1319 transitions. Word has length 21 [2022-01-18 03:58:50,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:50,471 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 1319 transitions. [2022-01-18 03:58:50,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1319 transitions. [2022-01-18 03:58:50,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:50,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:50,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:50,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-18 03:58:50,473 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:50,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:50,473 INFO L85 PathProgramCache]: Analyzing trace with hash -995334579, now seen corresponding path program 59 times [2022-01-18 03:58:50,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:50,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736723338] [2022-01-18 03:58:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:50,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:50,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:50,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736723338] [2022-01-18 03:58:50,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736723338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:50,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:50,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:50,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089901993] [2022-01-18 03:58:50,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:50,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:50,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:50,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:50,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:50,555 INFO L87 Difference]: Start difference. First operand 412 states and 1319 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:50,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:50,639 INFO L93 Difference]: Finished difference Result 880 states and 2648 transitions. [2022-01-18 03:58:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:50,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:50,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:50,641 INFO L225 Difference]: With dead ends: 880 [2022-01-18 03:58:50,641 INFO L226 Difference]: Without dead ends: 787 [2022-01-18 03:58:50,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:50,641 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 69 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:50,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 110 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:50,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-01-18 03:58:50,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 426. [2022-01-18 03:58:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 3.1905882352941175) internal successors, (1356), 425 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1356 transitions. [2022-01-18 03:58:50,648 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1356 transitions. Word has length 21 [2022-01-18 03:58:50,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:50,648 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 1356 transitions. [2022-01-18 03:58:50,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1356 transitions. [2022-01-18 03:58:50,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:50,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:50,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:50,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-18 03:58:50,649 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:50,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:50,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1323717461, now seen corresponding path program 60 times [2022-01-18 03:58:50,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:50,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439663644] [2022-01-18 03:58:50,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:50,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:50,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:50,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439663644] [2022-01-18 03:58:50,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439663644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:50,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:50,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:50,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380000181] [2022-01-18 03:58:50,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:50,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:50,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:50,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:50,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:50,739 INFO L87 Difference]: Start difference. First operand 426 states and 1356 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:50,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:50,811 INFO L93 Difference]: Finished difference Result 814 states and 2468 transitions. [2022-01-18 03:58:50,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:50,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:50,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:50,813 INFO L225 Difference]: With dead ends: 814 [2022-01-18 03:58:50,813 INFO L226 Difference]: Without dead ends: 690 [2022-01-18 03:58:50,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:50,813 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 67 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:50,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 93 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:50,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-01-18 03:58:50,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 393. [2022-01-18 03:58:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.2448979591836733) internal successors, (1272), 392 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:50,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1272 transitions. [2022-01-18 03:58:50,819 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1272 transitions. Word has length 21 [2022-01-18 03:58:50,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:50,819 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 1272 transitions. [2022-01-18 03:58:50,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:50,820 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1272 transitions. [2022-01-18 03:58:50,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:50,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:50,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:50,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-18 03:58:50,820 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:50,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:50,821 INFO L85 PathProgramCache]: Analyzing trace with hash 853574447, now seen corresponding path program 61 times [2022-01-18 03:58:50,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:50,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566879617] [2022-01-18 03:58:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:50,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:50,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:50,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566879617] [2022-01-18 03:58:50,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566879617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:50,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:50,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:50,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784433783] [2022-01-18 03:58:50,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:50,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:50,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:50,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:50,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:50,913 INFO L87 Difference]: Start difference. First operand 393 states and 1272 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:51,002 INFO L93 Difference]: Finished difference Result 825 states and 2485 transitions. [2022-01-18 03:58:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:51,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:51,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:51,003 INFO L225 Difference]: With dead ends: 825 [2022-01-18 03:58:51,003 INFO L226 Difference]: Without dead ends: 746 [2022-01-18 03:58:51,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:51,004 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 69 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:51,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 103 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:51,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-01-18 03:58:51,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 417. [2022-01-18 03:58:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 3.25) internal successors, (1352), 416 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1352 transitions. [2022-01-18 03:58:51,010 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 1352 transitions. Word has length 21 [2022-01-18 03:58:51,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:51,010 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 1352 transitions. [2022-01-18 03:58:51,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,010 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 1352 transitions. [2022-01-18 03:58:51,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:51,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:51,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:51,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-18 03:58:51,011 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:51,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:51,011 INFO L85 PathProgramCache]: Analyzing trace with hash 525191565, now seen corresponding path program 62 times [2022-01-18 03:58:51,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:51,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668867344] [2022-01-18 03:58:51,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:51,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:51,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:51,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:51,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668867344] [2022-01-18 03:58:51,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668867344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:51,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:51,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:51,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223289778] [2022-01-18 03:58:51,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:51,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:51,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:51,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:51,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:51,089 INFO L87 Difference]: Start difference. First operand 417 states and 1352 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:51,153 INFO L93 Difference]: Finished difference Result 856 states and 2572 transitions. [2022-01-18 03:58:51,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:51,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:51,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:51,155 INFO L225 Difference]: With dead ends: 856 [2022-01-18 03:58:51,155 INFO L226 Difference]: Without dead ends: 730 [2022-01-18 03:58:51,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:51,155 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 78 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:51,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 96 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:51,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-01-18 03:58:51,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 401. [2022-01-18 03:58:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.24) internal successors, (1296), 400 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1296 transitions. [2022-01-18 03:58:51,161 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1296 transitions. Word has length 21 [2022-01-18 03:58:51,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:51,161 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 1296 transitions. [2022-01-18 03:58:51,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1296 transitions. [2022-01-18 03:58:51,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:51,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:51,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:51,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-18 03:58:51,162 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:51,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:51,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2046040879, now seen corresponding path program 63 times [2022-01-18 03:58:51,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:51,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151700553] [2022-01-18 03:58:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:51,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:51,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:51,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151700553] [2022-01-18 03:58:51,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151700553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:51,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:51,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:51,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604372286] [2022-01-18 03:58:51,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:51,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:51,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:51,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:51,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:51,233 INFO L87 Difference]: Start difference. First operand 401 states and 1296 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:51,293 INFO L93 Difference]: Finished difference Result 829 states and 2489 transitions. [2022-01-18 03:58:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:51,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:51,295 INFO L225 Difference]: With dead ends: 829 [2022-01-18 03:58:51,295 INFO L226 Difference]: Without dead ends: 750 [2022-01-18 03:58:51,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:51,295 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 71 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:51,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 104 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:51,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-01-18 03:58:51,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 409. [2022-01-18 03:58:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 3.2254901960784315) internal successors, (1316), 408 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1316 transitions. [2022-01-18 03:58:51,302 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1316 transitions. Word has length 21 [2022-01-18 03:58:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:51,302 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 1316 transitions. [2022-01-18 03:58:51,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1316 transitions. [2022-01-18 03:58:51,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:51,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:51,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:51,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-18 03:58:51,303 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:51,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash 991871791, now seen corresponding path program 64 times [2022-01-18 03:58:51,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:51,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352469942] [2022-01-18 03:58:51,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:51,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:51,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:51,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352469942] [2022-01-18 03:58:51,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352469942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:51,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:51,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:51,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623101321] [2022-01-18 03:58:51,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:51,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:51,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:51,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:51,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:51,389 INFO L87 Difference]: Start difference. First operand 409 states and 1316 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:51,456 INFO L93 Difference]: Finished difference Result 777 states and 2360 transitions. [2022-01-18 03:58:51,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:51,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:51,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:51,457 INFO L225 Difference]: With dead ends: 777 [2022-01-18 03:58:51,457 INFO L226 Difference]: Without dead ends: 678 [2022-01-18 03:58:51,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:51,457 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 67 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:51,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 102 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:51,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-01-18 03:58:51,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 401. [2022-01-18 03:58:51,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.23) internal successors, (1292), 400 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1292 transitions. [2022-01-18 03:58:51,463 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1292 transitions. Word has length 21 [2022-01-18 03:58:51,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:51,463 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 1292 transitions. [2022-01-18 03:58:51,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,463 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1292 transitions. [2022-01-18 03:58:51,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:51,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:51,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:51,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-18 03:58:51,464 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:51,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:51,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1926116851, now seen corresponding path program 65 times [2022-01-18 03:58:51,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:51,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259330213] [2022-01-18 03:58:51,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:51,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:51,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:51,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259330213] [2022-01-18 03:58:51,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259330213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:51,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:51,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:51,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782966857] [2022-01-18 03:58:51,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:51,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:51,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:51,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:51,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:51,537 INFO L87 Difference]: Start difference. First operand 401 states and 1292 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:51,591 INFO L93 Difference]: Finished difference Result 805 states and 2409 transitions. [2022-01-18 03:58:51,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:51,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:51,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:51,593 INFO L225 Difference]: With dead ends: 805 [2022-01-18 03:58:51,593 INFO L226 Difference]: Without dead ends: 695 [2022-01-18 03:58:51,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:51,593 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 81 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:51,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 89 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-01-18 03:58:51,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 423. [2022-01-18 03:58:51,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 3.1966824644549763) internal successors, (1349), 422 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1349 transitions. [2022-01-18 03:58:51,599 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1349 transitions. Word has length 21 [2022-01-18 03:58:51,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:51,599 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 1349 transitions. [2022-01-18 03:58:51,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,599 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1349 transitions. [2022-01-18 03:58:51,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:51,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:51,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:51,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-18 03:58:51,600 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:51,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:51,600 INFO L85 PathProgramCache]: Analyzing trace with hash 799921903, now seen corresponding path program 66 times [2022-01-18 03:58:51,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:51,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015952713] [2022-01-18 03:58:51,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:51,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:51,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:51,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015952713] [2022-01-18 03:58:51,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015952713] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:51,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:51,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:51,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260381060] [2022-01-18 03:58:51,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:51,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:51,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:51,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:51,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:51,671 INFO L87 Difference]: Start difference. First operand 423 states and 1349 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:51,741 INFO L93 Difference]: Finished difference Result 722 states and 2171 transitions. [2022-01-18 03:58:51,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:51,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:51,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:51,742 INFO L225 Difference]: With dead ends: 722 [2022-01-18 03:58:51,742 INFO L226 Difference]: Without dead ends: 601 [2022-01-18 03:58:51,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:51,743 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 59 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:51,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 108 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:51,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-01-18 03:58:51,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 393. [2022-01-18 03:58:51,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.2346938775510203) internal successors, (1268), 392 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1268 transitions. [2022-01-18 03:58:51,748 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1268 transitions. Word has length 21 [2022-01-18 03:58:51,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:51,748 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 1268 transitions. [2022-01-18 03:58:51,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,749 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1268 transitions. [2022-01-18 03:58:51,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:51,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:51,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:51,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-18 03:58:51,749 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:51,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:51,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1835922061, now seen corresponding path program 67 times [2022-01-18 03:58:51,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:51,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744578659] [2022-01-18 03:58:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:51,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:51,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:51,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:51,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744578659] [2022-01-18 03:58:51,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744578659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:51,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:51,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:51,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710362766] [2022-01-18 03:58:51,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:51,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:51,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:51,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:51,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:51,844 INFO L87 Difference]: Start difference. First operand 393 states and 1268 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:51,906 INFO L93 Difference]: Finished difference Result 788 states and 2359 transitions. [2022-01-18 03:58:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:51,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:51,908 INFO L225 Difference]: With dead ends: 788 [2022-01-18 03:58:51,908 INFO L226 Difference]: Without dead ends: 709 [2022-01-18 03:58:51,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:51,908 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 73 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:51,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 104 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-01-18 03:58:51,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 405. [2022-01-18 03:58:51,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 3.227722772277228) internal successors, (1304), 404 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1304 transitions. [2022-01-18 03:58:51,914 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1304 transitions. Word has length 21 [2022-01-18 03:58:51,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:51,914 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 1304 transitions. [2022-01-18 03:58:51,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:51,915 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1304 transitions. [2022-01-18 03:58:51,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:51,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:51,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:51,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-18 03:58:51,916 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:51,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:51,916 INFO L85 PathProgramCache]: Analyzing trace with hash 344427149, now seen corresponding path program 68 times [2022-01-18 03:58:51,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:51,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653178974] [2022-01-18 03:58:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:51,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:51,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:51,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653178974] [2022-01-18 03:58:51,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653178974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:51,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:51,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:51,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330280942] [2022-01-18 03:58:51,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:51,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:51,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:51,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:51,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:51,997 INFO L87 Difference]: Start difference. First operand 405 states and 1304 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:52,061 INFO L93 Difference]: Finished difference Result 802 states and 2396 transitions. [2022-01-18 03:58:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:52,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:52,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:52,063 INFO L225 Difference]: With dead ends: 802 [2022-01-18 03:58:52,063 INFO L226 Difference]: Without dead ends: 701 [2022-01-18 03:58:52,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:52,063 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 90 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:52,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 88 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:52,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-01-18 03:58:52,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 397. [2022-01-18 03:58:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.2323232323232323) internal successors, (1280), 396 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1280 transitions. [2022-01-18 03:58:52,070 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1280 transitions. Word has length 21 [2022-01-18 03:58:52,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:52,070 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 1280 transitions. [2022-01-18 03:58:52,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,070 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1280 transitions. [2022-01-18 03:58:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:52,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:52,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:52,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-18 03:58:52,071 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:52,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:52,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1377982609, now seen corresponding path program 69 times [2022-01-18 03:58:52,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:52,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615274624] [2022-01-18 03:58:52,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:52,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:52,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:52,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:52,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615274624] [2022-01-18 03:58:52,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615274624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:52,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:52,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:52,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154369851] [2022-01-18 03:58:52,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:52,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:52,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:52,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:52,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:52,166 INFO L87 Difference]: Start difference. First operand 397 states and 1280 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:52,223 INFO L93 Difference]: Finished difference Result 800 states and 2395 transitions. [2022-01-18 03:58:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:52,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:52,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:52,225 INFO L225 Difference]: With dead ends: 800 [2022-01-18 03:58:52,225 INFO L226 Difference]: Without dead ends: 721 [2022-01-18 03:58:52,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:52,225 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 73 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:52,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 98 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:52,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-01-18 03:58:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 405. [2022-01-18 03:58:52,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 3.217821782178218) internal successors, (1300), 404 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1300 transitions. [2022-01-18 03:58:52,232 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1300 transitions. Word has length 21 [2022-01-18 03:58:52,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:52,232 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 1300 transitions. [2022-01-18 03:58:52,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,232 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1300 transitions. [2022-01-18 03:58:52,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:52,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:52,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:52,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-18 03:58:52,233 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:52,233 INFO L85 PathProgramCache]: Analyzing trace with hash 145074829, now seen corresponding path program 70 times [2022-01-18 03:58:52,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:52,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808147832] [2022-01-18 03:58:52,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:52,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:52,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:52,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808147832] [2022-01-18 03:58:52,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808147832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:52,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:52,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:52,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583011225] [2022-01-18 03:58:52,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:52,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:52,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:52,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:52,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:52,305 INFO L87 Difference]: Start difference. First operand 405 states and 1300 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:52,374 INFO L93 Difference]: Finished difference Result 748 states and 2266 transitions. [2022-01-18 03:58:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:52,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:52,375 INFO L225 Difference]: With dead ends: 748 [2022-01-18 03:58:52,375 INFO L226 Difference]: Without dead ends: 649 [2022-01-18 03:58:52,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:52,376 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 58 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:52,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 108 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:52,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-01-18 03:58:52,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 397. [2022-01-18 03:58:52,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.2222222222222223) internal successors, (1276), 396 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1276 transitions. [2022-01-18 03:58:52,397 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1276 transitions. Word has length 21 [2022-01-18 03:58:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:52,397 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 1276 transitions. [2022-01-18 03:58:52,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,397 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1276 transitions. [2022-01-18 03:58:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:52,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:52,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:52,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-18 03:58:52,398 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:52,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:52,398 INFO L85 PathProgramCache]: Analyzing trace with hash 900215437, now seen corresponding path program 71 times [2022-01-18 03:58:52,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:52,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992742489] [2022-01-18 03:58:52,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:52,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:52,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:52,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:52,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992742489] [2022-01-18 03:58:52,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992742489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:52,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:52,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:52,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546308336] [2022-01-18 03:58:52,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:52,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:52,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:52,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:52,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:52,501 INFO L87 Difference]: Start difference. First operand 397 states and 1276 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:52,564 INFO L93 Difference]: Finished difference Result 776 states and 2315 transitions. [2022-01-18 03:58:52,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:52,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:52,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:52,566 INFO L225 Difference]: With dead ends: 776 [2022-01-18 03:58:52,566 INFO L226 Difference]: Without dead ends: 683 [2022-01-18 03:58:52,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:52,566 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 77 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:52,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 92 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-18 03:58:52,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 411. [2022-01-18 03:58:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 3.202439024390244) internal successors, (1313), 410 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 1313 transitions. [2022-01-18 03:58:52,572 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 1313 transitions. Word has length 21 [2022-01-18 03:58:52,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:52,573 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 1313 transitions. [2022-01-18 03:58:52,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,573 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 1313 transitions. [2022-01-18 03:58:52,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:52,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:52,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:52,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-18 03:58:52,574 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:52,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:52,574 INFO L85 PathProgramCache]: Analyzing trace with hash -689719313, now seen corresponding path program 72 times [2022-01-18 03:58:52,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:52,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910728141] [2022-01-18 03:58:52,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:52,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:52,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:52,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910728141] [2022-01-18 03:58:52,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910728141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:52,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:52,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:52,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838300019] [2022-01-18 03:58:52,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:52,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:52,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:52,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:52,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:52,651 INFO L87 Difference]: Start difference. First operand 411 states and 1313 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:52,715 INFO L93 Difference]: Finished difference Result 710 states and 2135 transitions. [2022-01-18 03:58:52,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:52,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:52,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:52,716 INFO L225 Difference]: With dead ends: 710 [2022-01-18 03:58:52,716 INFO L226 Difference]: Without dead ends: 593 [2022-01-18 03:58:52,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:52,716 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 67 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:52,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 92 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:52,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-01-18 03:58:52,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 385. [2022-01-18 03:58:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.2604166666666665) internal successors, (1252), 384 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1252 transitions. [2022-01-18 03:58:52,722 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1252 transitions. Word has length 21 [2022-01-18 03:58:52,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:52,722 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 1252 transitions. [2022-01-18 03:58:52,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,722 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1252 transitions. [2022-01-18 03:58:52,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:52,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:52,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:52,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-18 03:58:52,723 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:52,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:52,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1640554035, now seen corresponding path program 73 times [2022-01-18 03:58:52,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:52,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813991304] [2022-01-18 03:58:52,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:52,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:52,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:52,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813991304] [2022-01-18 03:58:52,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813991304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:52,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:52,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:52,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961684326] [2022-01-18 03:58:52,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:52,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:52,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:52,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:52,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:52,798 INFO L87 Difference]: Start difference. First operand 385 states and 1252 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:52,858 INFO L93 Difference]: Finished difference Result 760 states and 2275 transitions. [2022-01-18 03:58:52,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:52,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:52,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:52,859 INFO L225 Difference]: With dead ends: 760 [2022-01-18 03:58:52,859 INFO L226 Difference]: Without dead ends: 673 [2022-01-18 03:58:52,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:52,859 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 79 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:52,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 84 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:52,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-01-18 03:58:52,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 393. [2022-01-18 03:58:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.2448979591836733) internal successors, (1272), 392 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1272 transitions. [2022-01-18 03:58:52,866 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1272 transitions. Word has length 21 [2022-01-18 03:58:52,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:52,866 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 1272 transitions. [2022-01-18 03:58:52,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:52,866 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1272 transitions. [2022-01-18 03:58:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:52,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:52,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:52,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-18 03:58:52,867 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash 318168403, now seen corresponding path program 74 times [2022-01-18 03:58:52,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:52,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573173852] [2022-01-18 03:58:52,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:52,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:52,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:52,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573173852] [2022-01-18 03:58:52,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573173852] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:52,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:52,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:52,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593003283] [2022-01-18 03:58:52,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:52,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:52,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:52,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:52,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:52,946 INFO L87 Difference]: Start difference. First operand 393 states and 1272 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:53,019 INFO L93 Difference]: Finished difference Result 752 states and 2239 transitions. [2022-01-18 03:58:53,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:53,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:53,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:53,021 INFO L225 Difference]: With dead ends: 752 [2022-01-18 03:58:53,021 INFO L226 Difference]: Without dead ends: 665 [2022-01-18 03:58:53,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:53,021 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 66 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:53,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 94 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:53,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-01-18 03:58:53,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 385. [2022-01-18 03:58:53,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.25) internal successors, (1248), 384 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1248 transitions. [2022-01-18 03:58:53,027 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1248 transitions. Word has length 21 [2022-01-18 03:58:53,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:53,027 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 1248 transitions. [2022-01-18 03:58:53,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,027 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1248 transitions. [2022-01-18 03:58:53,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:53,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:53,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:53,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-18 03:58:53,028 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:53,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:53,029 INFO L85 PathProgramCache]: Analyzing trace with hash 611076267, now seen corresponding path program 75 times [2022-01-18 03:58:53,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:53,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407958229] [2022-01-18 03:58:53,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:53,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:53,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:53,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:53,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407958229] [2022-01-18 03:58:53,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407958229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:53,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:53,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:53,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633371150] [2022-01-18 03:58:53,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:53,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:53,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:53,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:53,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:53,100 INFO L87 Difference]: Start difference. First operand 385 states and 1248 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:53,178 INFO L93 Difference]: Finished difference Result 803 states and 2410 transitions. [2022-01-18 03:58:53,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:53,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:53,180 INFO L225 Difference]: With dead ends: 803 [2022-01-18 03:58:53,180 INFO L226 Difference]: Without dead ends: 716 [2022-01-18 03:58:53,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:53,180 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 75 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:53,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 96 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:53,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-01-18 03:58:53,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 405. [2022-01-18 03:58:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 3.237623762376238) internal successors, (1308), 404 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1308 transitions. [2022-01-18 03:58:53,186 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1308 transitions. Word has length 21 [2022-01-18 03:58:53,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:53,186 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 1308 transitions. [2022-01-18 03:58:53,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,186 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1308 transitions. [2022-01-18 03:58:53,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:53,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:53,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:53,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-18 03:58:53,187 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:53,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:53,187 INFO L85 PathProgramCache]: Analyzing trace with hash -664247539, now seen corresponding path program 76 times [2022-01-18 03:58:53,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:53,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840553754] [2022-01-18 03:58:53,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:53,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:53,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:53,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840553754] [2022-01-18 03:58:53,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840553754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:53,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:53,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:53,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103714563] [2022-01-18 03:58:53,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:53,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:53,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:53,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:53,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:53,265 INFO L87 Difference]: Start difference. First operand 405 states and 1308 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:53,326 INFO L93 Difference]: Finished difference Result 826 states and 2465 transitions. [2022-01-18 03:58:53,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:53,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:53,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:53,327 INFO L225 Difference]: With dead ends: 826 [2022-01-18 03:58:53,327 INFO L226 Difference]: Without dead ends: 696 [2022-01-18 03:58:53,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:53,328 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 68 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:53,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 95 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:53,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-01-18 03:58:53,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 385. [2022-01-18 03:58:53,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.2291666666666665) internal successors, (1240), 384 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1240 transitions. [2022-01-18 03:58:53,333 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1240 transitions. Word has length 21 [2022-01-18 03:58:53,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:53,333 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 1240 transitions. [2022-01-18 03:58:53,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1240 transitions. [2022-01-18 03:58:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:53,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:53,334 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] [2022-01-18 03:58:53,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-18 03:58:53,334 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:53,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:53,334 INFO L85 PathProgramCache]: Analyzing trace with hash -34971087, now seen corresponding path program 77 times [2022-01-18 03:58:53,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:53,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160328986] [2022-01-18 03:58:53,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:53,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:53,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:53,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160328986] [2022-01-18 03:58:53,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160328986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:53,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:53,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:53,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370331448] [2022-01-18 03:58:53,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:53,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:53,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:53,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:53,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:53,416 INFO L87 Difference]: Start difference. First operand 385 states and 1240 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:53,477 INFO L93 Difference]: Finished difference Result 783 states and 2330 transitions. [2022-01-18 03:58:53,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:53,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:53,479 INFO L225 Difference]: With dead ends: 783 [2022-01-18 03:58:53,479 INFO L226 Difference]: Without dead ends: 704 [2022-01-18 03:58:53,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:53,479 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 79 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:53,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 82 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:53,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-01-18 03:58:53,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 401. [2022-01-18 03:58:53,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.22) internal successors, (1288), 400 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1288 transitions. [2022-01-18 03:58:53,485 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1288 transitions. Word has length 21 [2022-01-18 03:58:53,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:53,485 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 1288 transitions. [2022-01-18 03:58:53,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,485 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1288 transitions. [2022-01-18 03:58:53,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:53,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:53,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:53,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-18 03:58:53,486 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:53,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1624905837, now seen corresponding path program 78 times [2022-01-18 03:58:53,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:53,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840734027] [2022-01-18 03:58:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:53,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:53,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:53,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840734027] [2022-01-18 03:58:53,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840734027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:53,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:53,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:53,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224651809] [2022-01-18 03:58:53,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:53,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:53,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:53,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:53,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:53,559 INFO L87 Difference]: Start difference. First operand 401 states and 1288 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:53,617 INFO L93 Difference]: Finished difference Result 814 states and 2417 transitions. [2022-01-18 03:58:53,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:53,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:53,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:53,619 INFO L225 Difference]: With dead ends: 814 [2022-01-18 03:58:53,619 INFO L226 Difference]: Without dead ends: 680 [2022-01-18 03:58:53,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:53,619 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 72 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:53,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 87 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-01-18 03:58:53,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 377. [2022-01-18 03:58:53,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.234042553191489) internal successors, (1216), 376 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1216 transitions. [2022-01-18 03:58:53,625 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1216 transitions. Word has length 21 [2022-01-18 03:58:53,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:53,625 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 1216 transitions. [2022-01-18 03:58:53,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,625 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1216 transitions. [2022-01-18 03:58:53,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:53,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:53,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:53,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-18 03:58:53,626 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:53,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:53,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1858386381, now seen corresponding path program 79 times [2022-01-18 03:58:53,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:53,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556982231] [2022-01-18 03:58:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:53,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:53,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:53,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556982231] [2022-01-18 03:58:53,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556982231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:53,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:53,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:53,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680399044] [2022-01-18 03:58:53,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:53,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:53,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:53,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:53,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:53,703 INFO L87 Difference]: Start difference. First operand 377 states and 1216 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:53,776 INFO L93 Difference]: Finished difference Result 796 states and 2387 transitions. [2022-01-18 03:58:53,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:53,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:53,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:53,778 INFO L225 Difference]: With dead ends: 796 [2022-01-18 03:58:53,778 INFO L226 Difference]: Without dead ends: 709 [2022-01-18 03:58:53,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:53,778 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 72 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:53,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 95 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:58:53,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-01-18 03:58:53,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 389. [2022-01-18 03:58:53,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.2268041237113403) internal successors, (1252), 388 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1252 transitions. [2022-01-18 03:58:53,785 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1252 transitions. Word has length 21 [2022-01-18 03:58:53,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:53,785 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 1252 transitions. [2022-01-18 03:58:53,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,785 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1252 transitions. [2022-01-18 03:58:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:53,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:53,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:53,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-18 03:58:53,786 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:53,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:53,786 INFO L85 PathProgramCache]: Analyzing trace with hash -477858477, now seen corresponding path program 80 times [2022-01-18 03:58:53,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:53,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456568381] [2022-01-18 03:58:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:53,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:53,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:53,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456568381] [2022-01-18 03:58:53,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456568381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:53,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:53,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:53,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641583440] [2022-01-18 03:58:53,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:53,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:53,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:53,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:53,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:53,881 INFO L87 Difference]: Start difference. First operand 389 states and 1252 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:53,935 INFO L93 Difference]: Finished difference Result 788 states and 2351 transitions. [2022-01-18 03:58:53,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:53,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:53,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:53,936 INFO L225 Difference]: With dead ends: 788 [2022-01-18 03:58:53,936 INFO L226 Difference]: Without dead ends: 701 [2022-01-18 03:58:53,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:53,936 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 76 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:53,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 91 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:53,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-01-18 03:58:53,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 381. [2022-01-18 03:58:53,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.231578947368421) internal successors, (1228), 380 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1228 transitions. [2022-01-18 03:58:53,942 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1228 transitions. Word has length 21 [2022-01-18 03:58:53,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:53,942 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 1228 transitions. [2022-01-18 03:58:53,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:53,942 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1228 transitions. [2022-01-18 03:58:53,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:53,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:53,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:53,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-18 03:58:53,943 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:53,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:53,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1880792627, now seen corresponding path program 81 times [2022-01-18 03:58:53,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:53,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331724395] [2022-01-18 03:58:53,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:53,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:54,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:54,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331724395] [2022-01-18 03:58:54,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331724395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:54,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:54,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:54,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566368237] [2022-01-18 03:58:54,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:54,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:54,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:54,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:54,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:54,022 INFO L87 Difference]: Start difference. First operand 381 states and 1228 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:54,082 INFO L93 Difference]: Finished difference Result 788 states and 2363 transitions. [2022-01-18 03:58:54,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:54,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:54,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:54,084 INFO L225 Difference]: With dead ends: 788 [2022-01-18 03:58:54,084 INFO L226 Difference]: Without dead ends: 701 [2022-01-18 03:58:54,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:54,085 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 85 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:54,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 84 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-01-18 03:58:54,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 393. [2022-01-18 03:58:54,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.2142857142857144) internal successors, (1260), 392 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1260 transitions. [2022-01-18 03:58:54,091 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1260 transitions. Word has length 21 [2022-01-18 03:58:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:54,091 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 1260 transitions. [2022-01-18 03:58:54,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,091 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1260 transitions. [2022-01-18 03:58:54,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:54,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:54,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:54,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-18 03:58:54,093 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:54,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:54,093 INFO L85 PathProgramCache]: Analyzing trace with hash -176395473, now seen corresponding path program 82 times [2022-01-18 03:58:54,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:54,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470949519] [2022-01-18 03:58:54,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:54,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:54,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:54,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:54,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470949519] [2022-01-18 03:58:54,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470949519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:54,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:54,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:54,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14105217] [2022-01-18 03:58:54,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:54,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:54,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:54,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:54,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:54,168 INFO L87 Difference]: Start difference. First operand 393 states and 1260 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:54,227 INFO L93 Difference]: Finished difference Result 728 states and 2202 transitions. [2022-01-18 03:58:54,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:54,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:54,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:54,228 INFO L225 Difference]: With dead ends: 728 [2022-01-18 03:58:54,228 INFO L226 Difference]: Without dead ends: 625 [2022-01-18 03:58:54,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:54,229 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 69 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:54,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 87 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-01-18 03:58:54,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 381. [2022-01-18 03:58:54,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.221052631578947) internal successors, (1224), 380 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1224 transitions. [2022-01-18 03:58:54,234 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1224 transitions. Word has length 21 [2022-01-18 03:58:54,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:54,234 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 1224 transitions. [2022-01-18 03:58:54,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,234 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1224 transitions. [2022-01-18 03:58:54,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:54,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:54,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:54,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-18 03:58:54,235 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:54,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:54,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1768127315, now seen corresponding path program 83 times [2022-01-18 03:58:54,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:54,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888732723] [2022-01-18 03:58:54,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:54,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:54,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:54,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:54,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888732723] [2022-01-18 03:58:54,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888732723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:54,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:54,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:54,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628309191] [2022-01-18 03:58:54,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:54,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:54,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:54,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:54,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:54,334 INFO L87 Difference]: Start difference. First operand 381 states and 1224 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:54,389 INFO L93 Difference]: Finished difference Result 776 states and 2315 transitions. [2022-01-18 03:58:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:54,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:54,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:54,391 INFO L225 Difference]: With dead ends: 776 [2022-01-18 03:58:54,391 INFO L226 Difference]: Without dead ends: 697 [2022-01-18 03:58:54,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:54,391 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 72 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:54,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 89 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-01-18 03:58:54,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 389. [2022-01-18 03:58:54,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.2061855670103094) internal successors, (1244), 388 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1244 transitions. [2022-01-18 03:58:54,397 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1244 transitions. Word has length 21 [2022-01-18 03:58:54,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:54,397 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 1244 transitions. [2022-01-18 03:58:54,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,398 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1244 transitions. [2022-01-18 03:58:54,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:54,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:54,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:54,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-18 03:58:54,398 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:54,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:54,399 INFO L85 PathProgramCache]: Analyzing trace with hash 220204981, now seen corresponding path program 84 times [2022-01-18 03:58:54,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:54,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896001941] [2022-01-18 03:58:54,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:54,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:54,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:54,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896001941] [2022-01-18 03:58:54,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896001941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:54,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:54,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:54,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913540726] [2022-01-18 03:58:54,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:54,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:54,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:54,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:54,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:54,484 INFO L87 Difference]: Start difference. First operand 389 states and 1244 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:54,543 INFO L93 Difference]: Finished difference Result 724 states and 2186 transitions. [2022-01-18 03:58:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:54,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:54,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:54,545 INFO L225 Difference]: With dead ends: 724 [2022-01-18 03:58:54,545 INFO L226 Difference]: Without dead ends: 621 [2022-01-18 03:58:54,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:54,545 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 68 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:54,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 86 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:54,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-01-18 03:58:54,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 377. [2022-01-18 03:58:54,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.228723404255319) internal successors, (1214), 376 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1214 transitions. [2022-01-18 03:58:54,551 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1214 transitions. Word has length 21 [2022-01-18 03:58:54,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:54,551 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 1214 transitions. [2022-01-18 03:58:54,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,551 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1214 transitions. [2022-01-18 03:58:54,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:54,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:54,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:54,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-18 03:58:54,552 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:54,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:54,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1454233301, now seen corresponding path program 85 times [2022-01-18 03:58:54,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:54,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327912486] [2022-01-18 03:58:54,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:54,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:54,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:54,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327912486] [2022-01-18 03:58:54,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327912486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:54,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:54,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:54,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594027825] [2022-01-18 03:58:54,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:54,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:54,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:54,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:54,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:54,629 INFO L87 Difference]: Start difference. First operand 377 states and 1214 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:54,694 INFO L93 Difference]: Finished difference Result 791 states and 2360 transitions. [2022-01-18 03:58:54,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:54,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:54,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:54,695 INFO L225 Difference]: With dead ends: 791 [2022-01-18 03:58:54,695 INFO L226 Difference]: Without dead ends: 704 [2022-01-18 03:58:54,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:54,695 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 68 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:54,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 96 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-01-18 03:58:54,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 377. [2022-01-18 03:58:54,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.1968085106382977) internal successors, (1202), 376 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1202 transitions. [2022-01-18 03:58:54,701 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1202 transitions. Word has length 21 [2022-01-18 03:58:54,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:54,701 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 1202 transitions. [2022-01-18 03:58:54,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,701 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1202 transitions. [2022-01-18 03:58:54,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:54,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:54,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:54,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-18 03:58:54,702 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:54,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:54,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1565410189, now seen corresponding path program 86 times [2022-01-18 03:58:54,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:54,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23089789] [2022-01-18 03:58:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:54,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:54,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:54,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23089789] [2022-01-18 03:58:54,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23089789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:54,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:54,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:54,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860624714] [2022-01-18 03:58:54,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:54,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:54,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:54,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:54,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:54,779 INFO L87 Difference]: Start difference. First operand 377 states and 1202 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:54,836 INFO L93 Difference]: Finished difference Result 814 states and 2415 transitions. [2022-01-18 03:58:54,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:54,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:54,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:54,841 INFO L225 Difference]: With dead ends: 814 [2022-01-18 03:58:54,841 INFO L226 Difference]: Without dead ends: 684 [2022-01-18 03:58:54,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:54,841 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 69 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:54,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 92 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:54,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-01-18 03:58:54,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 357. [2022-01-18 03:58:54,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 3.1797752808988764) internal successors, (1132), 356 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 1132 transitions. [2022-01-18 03:58:54,847 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 1132 transitions. Word has length 21 [2022-01-18 03:58:54,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:54,847 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 1132 transitions. [2022-01-18 03:58:54,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,847 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 1132 transitions. [2022-01-18 03:58:54,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:54,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:54,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:54,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-18 03:58:54,848 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:54,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1661041267, now seen corresponding path program 87 times [2022-01-18 03:58:54,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:54,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754154668] [2022-01-18 03:58:54,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:54,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:54,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:54,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754154668] [2022-01-18 03:58:54,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754154668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:54,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:54,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:54,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782196979] [2022-01-18 03:58:54,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:54,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:54,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:54,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:54,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:54,921 INFO L87 Difference]: Start difference. First operand 357 states and 1132 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:54,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:54,985 INFO L93 Difference]: Finished difference Result 740 states and 2191 transitions. [2022-01-18 03:58:54,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:54,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:54,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:54,987 INFO L225 Difference]: With dead ends: 740 [2022-01-18 03:58:54,987 INFO L226 Difference]: Without dead ends: 653 [2022-01-18 03:58:54,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:54,987 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 78 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:54,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 93 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:54,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-01-18 03:58:55,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 369. [2022-01-18 03:58:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 3.1630434782608696) internal successors, (1164), 368 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 1164 transitions. [2022-01-18 03:58:55,011 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 1164 transitions. Word has length 21 [2022-01-18 03:58:55,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:55,011 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 1164 transitions. [2022-01-18 03:58:55,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,011 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 1164 transitions. [2022-01-18 03:58:55,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:55,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:55,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:55,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-18 03:58:55,012 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:55,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:55,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1023192435, now seen corresponding path program 88 times [2022-01-18 03:58:55,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:55,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87862694] [2022-01-18 03:58:55,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:55,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:55,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:55,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87862694] [2022-01-18 03:58:55,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87862694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:55,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:55,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:55,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87336881] [2022-01-18 03:58:55,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:55,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:55,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:55,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:55,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:55,084 INFO L87 Difference]: Start difference. First operand 369 states and 1164 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:55,147 INFO L93 Difference]: Finished difference Result 680 states and 2030 transitions. [2022-01-18 03:58:55,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:55,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:55,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:55,148 INFO L225 Difference]: With dead ends: 680 [2022-01-18 03:58:55,148 INFO L226 Difference]: Without dead ends: 577 [2022-01-18 03:58:55,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:55,149 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 68 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:55,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 93 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:55,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-01-18 03:58:55,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 357. [2022-01-18 03:58:55,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 3.162921348314607) internal successors, (1126), 356 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 1126 transitions. [2022-01-18 03:58:55,154 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 1126 transitions. Word has length 21 [2022-01-18 03:58:55,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:55,154 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 1126 transitions. [2022-01-18 03:58:55,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,154 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 1126 transitions. [2022-01-18 03:58:55,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:55,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:55,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:55,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-18 03:58:55,155 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:55,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:55,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1186431889, now seen corresponding path program 89 times [2022-01-18 03:58:55,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:55,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203969551] [2022-01-18 03:58:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:55,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:55,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:55,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203969551] [2022-01-18 03:58:55,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203969551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:55,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:55,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:55,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171987640] [2022-01-18 03:58:55,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:55,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:55,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:55,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:55,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:55,231 INFO L87 Difference]: Start difference. First operand 357 states and 1126 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:55,287 INFO L93 Difference]: Finished difference Result 773 states and 2287 transitions. [2022-01-18 03:58:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:55,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:55,289 INFO L225 Difference]: With dead ends: 773 [2022-01-18 03:58:55,289 INFO L226 Difference]: Without dead ends: 663 [2022-01-18 03:58:55,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:55,289 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 73 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:55,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 90 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-01-18 03:58:55,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 379. [2022-01-18 03:58:55,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.1296296296296298) internal successors, (1183), 378 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1183 transitions. [2022-01-18 03:58:55,294 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1183 transitions. Word has length 21 [2022-01-18 03:58:55,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:55,294 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 1183 transitions. [2022-01-18 03:58:55,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,295 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1183 transitions. [2022-01-18 03:58:55,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:55,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:55,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:55,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-18 03:58:55,295 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:55,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:55,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1098495155, now seen corresponding path program 90 times [2022-01-18 03:58:55,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:55,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445222655] [2022-01-18 03:58:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:55,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:55,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:55,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445222655] [2022-01-18 03:58:55,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445222655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:55,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:55,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:55,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656957187] [2022-01-18 03:58:55,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:55,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:55,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:55,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:55,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:55,371 INFO L87 Difference]: Start difference. First operand 379 states and 1183 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:55,439 INFO L93 Difference]: Finished difference Result 690 states and 2049 transitions. [2022-01-18 03:58:55,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:55,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:55,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:55,441 INFO L225 Difference]: With dead ends: 690 [2022-01-18 03:58:55,441 INFO L226 Difference]: Without dead ends: 567 [2022-01-18 03:58:55,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:55,441 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 64 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:55,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 99 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:55,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-01-18 03:58:55,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 347. [2022-01-18 03:58:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 3.1705202312138727) internal successors, (1097), 346 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1097 transitions. [2022-01-18 03:58:55,446 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1097 transitions. Word has length 21 [2022-01-18 03:58:55,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:55,446 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 1097 transitions. [2022-01-18 03:58:55,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,446 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1097 transitions. [2022-01-18 03:58:55,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:55,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:55,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:55,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-18 03:58:55,447 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:55,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:55,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1318117199, now seen corresponding path program 91 times [2022-01-18 03:58:55,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:55,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477825299] [2022-01-18 03:58:55,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:55,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:55,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:55,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477825299] [2022-01-18 03:58:55,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477825299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:55,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:55,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:55,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878506236] [2022-01-18 03:58:55,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:55,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:55,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:55,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:55,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:55,526 INFO L87 Difference]: Start difference. First operand 347 states and 1097 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:55,581 INFO L93 Difference]: Finished difference Result 686 states and 2000 transitions. [2022-01-18 03:58:55,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:55,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:55,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:55,583 INFO L225 Difference]: With dead ends: 686 [2022-01-18 03:58:55,583 INFO L226 Difference]: Without dead ends: 607 [2022-01-18 03:58:55,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:55,583 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 67 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:55,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 94 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:55,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-01-18 03:58:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 347. [2022-01-18 03:58:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 3.147398843930636) internal successors, (1089), 346 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1089 transitions. [2022-01-18 03:58:55,588 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1089 transitions. Word has length 21 [2022-01-18 03:58:55,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:55,588 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 1089 transitions. [2022-01-18 03:58:55,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,588 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1089 transitions. [2022-01-18 03:58:55,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:55,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:55,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:55,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-18 03:58:55,589 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:55,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:55,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1386915347, now seen corresponding path program 92 times [2022-01-18 03:58:55,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:55,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609161608] [2022-01-18 03:58:55,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:55,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:55,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:55,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609161608] [2022-01-18 03:58:55,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609161608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:55,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:55,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:55,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89180097] [2022-01-18 03:58:55,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:55,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:55,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:55,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:55,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:55,668 INFO L87 Difference]: Start difference. First operand 347 states and 1089 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:55,725 INFO L93 Difference]: Finished difference Result 717 states and 2087 transitions. [2022-01-18 03:58:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:55,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:55,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:55,726 INFO L225 Difference]: With dead ends: 717 [2022-01-18 03:58:55,726 INFO L226 Difference]: Without dead ends: 591 [2022-01-18 03:58:55,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:55,727 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 81 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:55,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 88 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:55,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-01-18 03:58:55,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 331. [2022-01-18 03:58:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 3.1303030303030304) internal successors, (1033), 330 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 1033 transitions. [2022-01-18 03:58:55,732 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 1033 transitions. Word has length 21 [2022-01-18 03:58:55,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:55,732 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 1033 transitions. [2022-01-18 03:58:55,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,732 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 1033 transitions. [2022-01-18 03:58:55,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:55,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:55,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:55,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-18 03:58:55,733 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:55,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:55,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1524925165, now seen corresponding path program 93 times [2022-01-18 03:58:55,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:55,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24980156] [2022-01-18 03:58:55,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:55,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:55,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:55,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:55,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24980156] [2022-01-18 03:58:55,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24980156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:55,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:55,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:55,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863222775] [2022-01-18 03:58:55,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:55,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:55,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:55,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:55,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:55,808 INFO L87 Difference]: Start difference. First operand 331 states and 1033 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:55,865 INFO L93 Difference]: Finished difference Result 690 states and 2004 transitions. [2022-01-18 03:58:55,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:55,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:55,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:55,866 INFO L225 Difference]: With dead ends: 690 [2022-01-18 03:58:55,866 INFO L226 Difference]: Without dead ends: 611 [2022-01-18 03:58:55,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:55,867 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 75 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:55,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 89 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-01-18 03:58:55,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 339. [2022-01-18 03:58:55,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 3.1153846153846154) internal successors, (1053), 338 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 1053 transitions. [2022-01-18 03:58:55,871 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 1053 transitions. Word has length 21 [2022-01-18 03:58:55,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:55,872 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 1053 transitions. [2022-01-18 03:58:55,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:55,872 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 1053 transitions. [2022-01-18 03:58:55,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:55,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:55,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:55,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-18 03:58:55,874 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:55,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:55,874 INFO L85 PathProgramCache]: Analyzing trace with hash 155571475, now seen corresponding path program 94 times [2022-01-18 03:58:55,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:55,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127021509] [2022-01-18 03:58:55,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:55,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:55,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:55,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127021509] [2022-01-18 03:58:55,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127021509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:55,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:55,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:55,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118648675] [2022-01-18 03:58:55,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:55,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:55,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:55,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:55,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:55,960 INFO L87 Difference]: Start difference. First operand 339 states and 1053 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:56,021 INFO L93 Difference]: Finished difference Result 638 states and 1875 transitions. [2022-01-18 03:58:56,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:56,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:56,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:56,022 INFO L225 Difference]: With dead ends: 638 [2022-01-18 03:58:56,022 INFO L226 Difference]: Without dead ends: 539 [2022-01-18 03:58:56,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:56,022 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 63 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:56,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 95 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:56,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-01-18 03:58:56,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 331. [2022-01-18 03:58:56,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 3.118181818181818) internal successors, (1029), 330 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 1029 transitions. [2022-01-18 03:58:56,027 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 1029 transitions. Word has length 21 [2022-01-18 03:58:56,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:56,027 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 1029 transitions. [2022-01-18 03:58:56,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,027 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 1029 transitions. [2022-01-18 03:58:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:56,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:56,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:56,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-18 03:58:56,028 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:56,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:56,028 INFO L85 PathProgramCache]: Analyzing trace with hash -107763211, now seen corresponding path program 95 times [2022-01-18 03:58:56,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:56,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140891422] [2022-01-18 03:58:56,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:56,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:56,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:56,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140891422] [2022-01-18 03:58:56,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140891422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:56,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:56,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:56,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931219139] [2022-01-18 03:58:56,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:56,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:56,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:56,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:56,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:56,111 INFO L87 Difference]: Start difference. First operand 331 states and 1029 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:56,166 INFO L93 Difference]: Finished difference Result 666 states and 1924 transitions. [2022-01-18 03:58:56,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:56,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:56,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:56,168 INFO L225 Difference]: With dead ends: 666 [2022-01-18 03:58:56,168 INFO L226 Difference]: Without dead ends: 556 [2022-01-18 03:58:56,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:56,168 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 86 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:56,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 81 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:56,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-01-18 03:58:56,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 284. [2022-01-18 03:58:56,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 3.0530035335689045) internal successors, (864), 283 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 864 transitions. [2022-01-18 03:58:56,172 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 864 transitions. Word has length 21 [2022-01-18 03:58:56,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:56,172 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 864 transitions. [2022-01-18 03:58:56,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,173 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 864 transitions. [2022-01-18 03:58:56,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:56,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:56,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:56,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-18 03:58:56,173 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:56,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:56,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1499907757, now seen corresponding path program 96 times [2022-01-18 03:58:56,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:56,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97877398] [2022-01-18 03:58:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:56,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:56,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:56,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97877398] [2022-01-18 03:58:56,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97877398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:56,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:56,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:56,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93716194] [2022-01-18 03:58:56,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:56,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:56,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:56,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:56,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:56,248 INFO L87 Difference]: Start difference. First operand 284 states and 864 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:56,308 INFO L93 Difference]: Finished difference Result 583 states and 1686 transitions. [2022-01-18 03:58:56,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:56,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:56,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:56,309 INFO L225 Difference]: With dead ends: 583 [2022-01-18 03:58:56,309 INFO L226 Difference]: Without dead ends: 458 [2022-01-18 03:58:56,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:56,313 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 81 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:56,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 77 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:56,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-01-18 03:58:56,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 250. [2022-01-18 03:58:56,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.1204819277108435) internal successors, (777), 249 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 777 transitions. [2022-01-18 03:58:56,317 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 777 transitions. Word has length 21 [2022-01-18 03:58:56,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:56,317 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 777 transitions. [2022-01-18 03:58:56,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,317 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 777 transitions. [2022-01-18 03:58:56,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:56,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:56,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:56,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-18 03:58:56,318 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:56,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:56,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1797665195, now seen corresponding path program 97 times [2022-01-18 03:58:56,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:56,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589438689] [2022-01-18 03:58:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:56,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:56,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:56,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:56,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589438689] [2022-01-18 03:58:56,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589438689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:56,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:56,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:56,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500145163] [2022-01-18 03:58:56,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:56,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:56,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:56,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:56,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:56,389 INFO L87 Difference]: Start difference. First operand 250 states and 777 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:56,441 INFO L93 Difference]: Finished difference Result 513 states and 1487 transitions. [2022-01-18 03:58:56,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:56,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:56,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:56,442 INFO L225 Difference]: With dead ends: 513 [2022-01-18 03:58:56,442 INFO L226 Difference]: Without dead ends: 426 [2022-01-18 03:58:56,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:56,443 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 75 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:56,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 69 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-01-18 03:58:56,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 258. [2022-01-18 03:58:56,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 3.1011673151750974) internal successors, (797), 257 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 797 transitions. [2022-01-18 03:58:56,447 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 797 transitions. Word has length 21 [2022-01-18 03:58:56,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:56,447 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 797 transitions. [2022-01-18 03:58:56,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,447 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 797 transitions. [2022-01-18 03:58:56,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:56,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:56,448 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] [2022-01-18 03:58:56,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-18 03:58:56,448 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:56,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:56,448 INFO L85 PathProgramCache]: Analyzing trace with hash -538579663, now seen corresponding path program 98 times [2022-01-18 03:58:56,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:56,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556518087] [2022-01-18 03:58:56,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:56,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:56,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:56,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556518087] [2022-01-18 03:58:56,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556518087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:56,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:56,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:56,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025439541] [2022-01-18 03:58:56,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:56,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:56,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:56,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:56,530 INFO L87 Difference]: Start difference. First operand 258 states and 797 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:56,583 INFO L93 Difference]: Finished difference Result 505 states and 1451 transitions. [2022-01-18 03:58:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:56,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:56,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:56,584 INFO L225 Difference]: With dead ends: 505 [2022-01-18 03:58:56,584 INFO L226 Difference]: Without dead ends: 418 [2022-01-18 03:58:56,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:56,584 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 68 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:56,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 74 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:56,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-01-18 03:58:56,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 250. [2022-01-18 03:58:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.104417670682731) internal successors, (773), 249 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 773 transitions. [2022-01-18 03:58:56,588 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 773 transitions. Word has length 21 [2022-01-18 03:58:56,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:56,588 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 773 transitions. [2022-01-18 03:58:56,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,589 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 773 transitions. [2022-01-18 03:58:56,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:56,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:56,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:56,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-18 03:58:56,589 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:56,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:56,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1304835669, now seen corresponding path program 99 times [2022-01-18 03:58:56,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:56,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106296647] [2022-01-18 03:58:56,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:56,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:56,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:56,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106296647] [2022-01-18 03:58:56,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106296647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:56,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:56,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:56,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261085164] [2022-01-18 03:58:56,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:56,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:56,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:56,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:56,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:56,679 INFO L87 Difference]: Start difference. First operand 250 states and 773 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:56,736 INFO L93 Difference]: Finished difference Result 531 states and 1544 transitions. [2022-01-18 03:58:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:56,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:56,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:56,737 INFO L225 Difference]: With dead ends: 531 [2022-01-18 03:58:56,737 INFO L226 Difference]: Without dead ends: 444 [2022-01-18 03:58:56,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:56,738 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 65 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:56,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 74 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-01-18 03:58:56,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 262. [2022-01-18 03:58:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 3.0842911877394634) internal successors, (805), 261 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 805 transitions. [2022-01-18 03:58:56,745 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 805 transitions. Word has length 21 [2022-01-18 03:58:56,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:56,745 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 805 transitions. [2022-01-18 03:58:56,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,745 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 805 transitions. [2022-01-18 03:58:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:56,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:56,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:56,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-18 03:58:56,746 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:56,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:56,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1057184653, now seen corresponding path program 100 times [2022-01-18 03:58:56,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:56,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357911164] [2022-01-18 03:58:56,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:56,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:56,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:56,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357911164] [2022-01-18 03:58:56,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357911164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:56,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:56,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:56,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318422507] [2022-01-18 03:58:56,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:56,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:56,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:56,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:56,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:56,818 INFO L87 Difference]: Start difference. First operand 262 states and 805 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:56,874 INFO L93 Difference]: Finished difference Result 537 states and 1549 transitions. [2022-01-18 03:58:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:56,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:56,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:56,875 INFO L225 Difference]: With dead ends: 537 [2022-01-18 03:58:56,875 INFO L226 Difference]: Without dead ends: 432 [2022-01-18 03:58:56,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:56,875 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 70 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:56,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 68 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:56,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-01-18 03:58:56,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 250. [2022-01-18 03:58:56,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.0883534136546187) internal successors, (769), 249 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 769 transitions. [2022-01-18 03:58:56,879 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 769 transitions. Word has length 21 [2022-01-18 03:58:56,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:56,879 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 769 transitions. [2022-01-18 03:58:56,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:56,879 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 769 transitions. [2022-01-18 03:58:56,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:56,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:56,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:56,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-18 03:58:56,880 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:56,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1950883023, now seen corresponding path program 101 times [2022-01-18 03:58:56,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:56,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860712093] [2022-01-18 03:58:56,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:56,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:56,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:56,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860712093] [2022-01-18 03:58:56,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860712093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:56,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:56,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:56,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208945419] [2022-01-18 03:58:56,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:56,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:56,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:56,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:56,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:56,955 INFO L87 Difference]: Start difference. First operand 250 states and 769 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:57,009 INFO L93 Difference]: Finished difference Result 511 states and 1468 transitions. [2022-01-18 03:58:57,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:57,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:57,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:57,010 INFO L225 Difference]: With dead ends: 511 [2022-01-18 03:58:57,010 INFO L226 Difference]: Without dead ends: 432 [2022-01-18 03:58:57,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:57,010 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 65 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:57,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 76 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-01-18 03:58:57,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 258. [2022-01-18 03:58:57,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 3.0700389105058368) internal successors, (789), 257 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 789 transitions. [2022-01-18 03:58:57,013 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 789 transitions. Word has length 21 [2022-01-18 03:58:57,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:57,014 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 789 transitions. [2022-01-18 03:58:57,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,014 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 789 transitions. [2022-01-18 03:58:57,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:57,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:57,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:57,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-18 03:58:57,014 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:57,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:57,014 INFO L85 PathProgramCache]: Analyzing trace with hash 775155731, now seen corresponding path program 102 times [2022-01-18 03:58:57,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:57,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992876009] [2022-01-18 03:58:57,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:57,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:57,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:57,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992876009] [2022-01-18 03:58:57,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992876009] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:57,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:57,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:57,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165766538] [2022-01-18 03:58:57,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:57,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:57,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:57,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:57,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:57,094 INFO L87 Difference]: Start difference. First operand 258 states and 789 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:57,156 INFO L93 Difference]: Finished difference Result 525 states and 1505 transitions. [2022-01-18 03:58:57,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:57,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:57,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:57,157 INFO L225 Difference]: With dead ends: 525 [2022-01-18 03:58:57,157 INFO L226 Difference]: Without dead ends: 420 [2022-01-18 03:58:57,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:57,158 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 64 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:57,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 73 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:57,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-01-18 03:58:57,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 246. [2022-01-18 03:58:57,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.0979591836734692) internal successors, (759), 245 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 759 transitions. [2022-01-18 03:58:57,161 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 759 transitions. Word has length 21 [2022-01-18 03:58:57,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:57,161 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 759 transitions. [2022-01-18 03:58:57,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,161 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 759 transitions. [2022-01-18 03:58:57,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:57,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:57,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:57,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-18 03:58:57,162 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:57,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1316763149, now seen corresponding path program 103 times [2022-01-18 03:58:57,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:57,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560227092] [2022-01-18 03:58:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:57,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:57,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:57,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560227092] [2022-01-18 03:58:57,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560227092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:57,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:57,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:57,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672093824] [2022-01-18 03:58:57,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:57,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:57,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:57,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:57,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:57,238 INFO L87 Difference]: Start difference. First operand 246 states and 759 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:57,292 INFO L93 Difference]: Finished difference Result 501 states and 1441 transitions. [2022-01-18 03:58:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:57,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:57,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:57,293 INFO L225 Difference]: With dead ends: 501 [2022-01-18 03:58:57,293 INFO L226 Difference]: Without dead ends: 414 [2022-01-18 03:58:57,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:57,294 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 78 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:57,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 66 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:57,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-18 03:58:57,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 246. [2022-01-18 03:58:57,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.0653061224489795) internal successors, (751), 245 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 751 transitions. [2022-01-18 03:58:57,297 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 751 transitions. Word has length 21 [2022-01-18 03:58:57,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:57,297 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 751 transitions. [2022-01-18 03:58:57,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,297 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 751 transitions. [2022-01-18 03:58:57,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:57,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:57,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:57,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-18 03:58:57,298 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:57,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:57,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1019481709, now seen corresponding path program 104 times [2022-01-18 03:58:57,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:57,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180541096] [2022-01-18 03:58:57,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:57,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:57,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:57,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:57,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180541096] [2022-01-18 03:58:57,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180541096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:57,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:57,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:57,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779704841] [2022-01-18 03:58:57,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:57,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:57,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:57,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:57,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:57,374 INFO L87 Difference]: Start difference. First operand 246 states and 751 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:57,419 INFO L93 Difference]: Finished difference Result 493 states and 1405 transitions. [2022-01-18 03:58:57,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:57,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:57,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:57,420 INFO L225 Difference]: With dead ends: 493 [2022-01-18 03:58:57,420 INFO L226 Difference]: Without dead ends: 406 [2022-01-18 03:58:57,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:57,421 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 75 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:57,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 74 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:57,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-01-18 03:58:57,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 238. [2022-01-18 03:58:57,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 3.067510548523207) internal successors, (727), 237 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 727 transitions. [2022-01-18 03:58:57,424 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 727 transitions. Word has length 21 [2022-01-18 03:58:57,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:57,424 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 727 transitions. [2022-01-18 03:58:57,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,424 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 727 transitions. [2022-01-18 03:58:57,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:57,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:57,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:57,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-18 03:58:57,425 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:57,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:57,425 INFO L85 PathProgramCache]: Analyzing trace with hash 391113131, now seen corresponding path program 105 times [2022-01-18 03:58:57,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:57,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014056591] [2022-01-18 03:58:57,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:57,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:57,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:57,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014056591] [2022-01-18 03:58:57,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014056591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:57,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:57,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:57,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870595906] [2022-01-18 03:58:57,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:57,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:57,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:57,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:57,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:57,496 INFO L87 Difference]: Start difference. First operand 238 states and 727 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:57,547 INFO L93 Difference]: Finished difference Result 493 states and 1417 transitions. [2022-01-18 03:58:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:57,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:57,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:57,548 INFO L225 Difference]: With dead ends: 493 [2022-01-18 03:58:57,548 INFO L226 Difference]: Without dead ends: 406 [2022-01-18 03:58:57,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:57,549 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 80 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:57,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 66 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:57,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-01-18 03:58:57,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 250. [2022-01-18 03:58:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.0481927710843375) internal successors, (759), 249 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 759 transitions. [2022-01-18 03:58:57,552 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 759 transitions. Word has length 21 [2022-01-18 03:58:57,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:57,552 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 759 transitions. [2022-01-18 03:58:57,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,552 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 759 transitions. [2022-01-18 03:58:57,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:57,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:57,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:57,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-18 03:58:57,553 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:57,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:57,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2095510285, now seen corresponding path program 106 times [2022-01-18 03:58:57,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:57,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639947650] [2022-01-18 03:58:57,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:57,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:57,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:57,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639947650] [2022-01-18 03:58:57,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639947650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:57,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:57,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:57,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691254123] [2022-01-18 03:58:57,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:57,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:57,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:57,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:57,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:57,631 INFO L87 Difference]: Start difference. First operand 250 states and 759 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:57,681 INFO L93 Difference]: Finished difference Result 433 states and 1256 transitions. [2022-01-18 03:58:57,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:57,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:57,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:57,682 INFO L225 Difference]: With dead ends: 433 [2022-01-18 03:58:57,682 INFO L226 Difference]: Without dead ends: 330 [2022-01-18 03:58:57,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:57,683 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 61 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:57,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 71 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:57,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-01-18 03:58:57,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 238. [2022-01-18 03:58:57,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 3.050632911392405) internal successors, (723), 237 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 723 transitions. [2022-01-18 03:58:57,686 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 723 transitions. Word has length 21 [2022-01-18 03:58:57,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:57,686 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 723 transitions. [2022-01-18 03:58:57,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 723 transitions. [2022-01-18 03:58:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:57,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:57,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:57,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-18 03:58:57,686 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:57,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:57,687 INFO L85 PathProgramCache]: Analyzing trace with hash -254934223, now seen corresponding path program 107 times [2022-01-18 03:58:57,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:57,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327211093] [2022-01-18 03:58:57,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:57,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:57,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:57,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327211093] [2022-01-18 03:58:57,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327211093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:57,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:57,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:57,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972919028] [2022-01-18 03:58:57,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:57,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:57,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:57,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:57,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:57,760 INFO L87 Difference]: Start difference. First operand 238 states and 723 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:57,808 INFO L93 Difference]: Finished difference Result 481 states and 1369 transitions. [2022-01-18 03:58:57,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:57,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:57,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:57,809 INFO L225 Difference]: With dead ends: 481 [2022-01-18 03:58:57,809 INFO L226 Difference]: Without dead ends: 402 [2022-01-18 03:58:57,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:57,809 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 67 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:57,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 74 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:57,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-01-18 03:58:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 246. [2022-01-18 03:58:57,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.0326530612244897) internal successors, (743), 245 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 743 transitions. [2022-01-18 03:58:57,812 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 743 transitions. Word has length 21 [2022-01-18 03:58:57,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:57,812 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 743 transitions. [2022-01-18 03:58:57,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,813 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 743 transitions. [2022-01-18 03:58:57,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:57,813 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:57,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:57,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-18 03:58:57,813 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:57,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:57,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1802856557, now seen corresponding path program 108 times [2022-01-18 03:58:57,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:57,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155913476] [2022-01-18 03:58:57,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:57,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:57,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:57,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155913476] [2022-01-18 03:58:57,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155913476] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:57,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:57,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:57,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30653245] [2022-01-18 03:58:57,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:57,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:57,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:57,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:57,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:57,893 INFO L87 Difference]: Start difference. First operand 246 states and 743 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:57,943 INFO L93 Difference]: Finished difference Result 429 states and 1240 transitions. [2022-01-18 03:58:57,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:57,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:57,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:57,944 INFO L225 Difference]: With dead ends: 429 [2022-01-18 03:58:57,944 INFO L226 Difference]: Without dead ends: 326 [2022-01-18 03:58:57,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:57,944 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 69 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:57,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 65 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:57,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-01-18 03:58:57,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 234. [2022-01-18 03:58:57,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 3.060085836909871) internal successors, (713), 233 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 713 transitions. [2022-01-18 03:58:57,948 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 713 transitions. Word has length 21 [2022-01-18 03:58:57,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:57,948 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 713 transitions. [2022-01-18 03:58:57,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:57,948 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 713 transitions. [2022-01-18 03:58:57,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:57,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:57,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:57,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-18 03:58:57,949 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:57,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:57,949 INFO L85 PathProgramCache]: Analyzing trace with hash 231764395, now seen corresponding path program 109 times [2022-01-18 03:58:57,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:57,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123714961] [2022-01-18 03:58:57,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:57,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:58,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:58,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123714961] [2022-01-18 03:58:58,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123714961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:58,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:58,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:58,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806568046] [2022-01-18 03:58:58,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:58,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:58,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:58,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:58,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:58,025 INFO L87 Difference]: Start difference. First operand 234 states and 713 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:58,079 INFO L93 Difference]: Finished difference Result 479 states and 1364 transitions. [2022-01-18 03:58:58,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:58,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:58,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:58,080 INFO L225 Difference]: With dead ends: 479 [2022-01-18 03:58:58,080 INFO L226 Difference]: Without dead ends: 392 [2022-01-18 03:58:58,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:58,080 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 69 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:58,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 75 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:58,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-01-18 03:58:58,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 234. [2022-01-18 03:58:58,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 3.0085836909871246) internal successors, (701), 233 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 701 transitions. [2022-01-18 03:58:58,083 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 701 transitions. Word has length 21 [2022-01-18 03:58:58,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:58,083 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 701 transitions. [2022-01-18 03:58:58,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,084 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 701 transitions. [2022-01-18 03:58:58,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:58,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:58,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:58,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-18 03:58:58,084 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:58,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:58,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1701182579, now seen corresponding path program 110 times [2022-01-18 03:58:58,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:58,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158438860] [2022-01-18 03:58:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:58,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:58,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:58,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:58,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158438860] [2022-01-18 03:58:58,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158438860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:58,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:58,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:58,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504410842] [2022-01-18 03:58:58,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:58,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:58,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:58,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:58,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:58,156 INFO L87 Difference]: Start difference. First operand 234 states and 701 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:58,206 INFO L93 Difference]: Finished difference Result 485 states and 1369 transitions. [2022-01-18 03:58:58,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:58,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:58,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:58,207 INFO L225 Difference]: With dead ends: 485 [2022-01-18 03:58:58,207 INFO L226 Difference]: Without dead ends: 380 [2022-01-18 03:58:58,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:58,207 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 60 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:58,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 66 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:58,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-01-18 03:58:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 222. [2022-01-18 03:58:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 3.0) internal successors, (663), 221 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 663 transitions. [2022-01-18 03:58:58,210 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 663 transitions. Word has length 21 [2022-01-18 03:58:58,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:58,211 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 663 transitions. [2022-01-18 03:58:58,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 663 transitions. [2022-01-18 03:58:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:58,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:58,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:58,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-18 03:58:58,211 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:58,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:58,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1312827021, now seen corresponding path program 111 times [2022-01-18 03:58:58,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:58,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10730381] [2022-01-18 03:58:58,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:58,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:58,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:58,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10730381] [2022-01-18 03:58:58,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10730381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:58,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:58,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:58,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864138212] [2022-01-18 03:58:58,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:58,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:58,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:58,298 INFO L87 Difference]: Start difference. First operand 222 states and 663 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:58,348 INFO L93 Difference]: Finished difference Result 441 states and 1233 transitions. [2022-01-18 03:58:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:58,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:58,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:58,349 INFO L225 Difference]: With dead ends: 441 [2022-01-18 03:58:58,349 INFO L226 Difference]: Without dead ends: 354 [2022-01-18 03:58:58,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:58,349 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 71 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:58,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 63 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-01-18 03:58:58,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 198. [2022-01-18 03:58:58,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.918781725888325) internal successors, (575), 197 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 575 transitions. [2022-01-18 03:58:58,352 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 575 transitions. Word has length 21 [2022-01-18 03:58:58,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:58,352 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 575 transitions. [2022-01-18 03:58:58,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,352 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 575 transitions. [2022-01-18 03:58:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:58,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:58,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:58,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-18 03:58:58,352 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:58,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:58,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1299483405, now seen corresponding path program 112 times [2022-01-18 03:58:58,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:58,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481658341] [2022-01-18 03:58:58,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:58,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:58,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:58,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481658341] [2022-01-18 03:58:58,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481658341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:58,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:58,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:58,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507256163] [2022-01-18 03:58:58,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:58,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:58,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:58,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:58,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:58,425 INFO L87 Difference]: Start difference. First operand 198 states and 575 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:58,474 INFO L93 Difference]: Finished difference Result 381 states and 1072 transitions. [2022-01-18 03:58:58,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:58,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:58,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:58,475 INFO L225 Difference]: With dead ends: 381 [2022-01-18 03:58:58,475 INFO L226 Difference]: Without dead ends: 278 [2022-01-18 03:58:58,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:58,475 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 59 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:58,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 63 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:58,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-01-18 03:58:58,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 186. [2022-01-18 03:58:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.902702702702703) internal successors, (537), 185 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 537 transitions. [2022-01-18 03:58:58,478 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 537 transitions. Word has length 21 [2022-01-18 03:58:58,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:58,478 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 537 transitions. [2022-01-18 03:58:58,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,478 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 537 transitions. [2022-01-18 03:58:58,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:58,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:58,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:58,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-18 03:58:58,478 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:58,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:58,479 INFO L85 PathProgramCache]: Analyzing trace with hash -158057361, now seen corresponding path program 113 times [2022-01-18 03:58:58,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:58,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094422409] [2022-01-18 03:58:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:58,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:58,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:58,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094422409] [2022-01-18 03:58:58,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094422409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:58,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:58,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:58,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150037925] [2022-01-18 03:58:58,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:58,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:58,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:58,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:58,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:58,561 INFO L87 Difference]: Start difference. First operand 186 states and 537 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:58,608 INFO L93 Difference]: Finished difference Result 385 states and 1090 transitions. [2022-01-18 03:58:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:58,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:58,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:58,609 INFO L225 Difference]: With dead ends: 385 [2022-01-18 03:58:58,609 INFO L226 Difference]: Without dead ends: 292 [2022-01-18 03:58:58,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:58,610 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 66 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:58,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 62 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:58,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-01-18 03:58:58,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 200. [2022-01-18 03:58:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.8844221105527637) internal successors, (574), 199 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 574 transitions. [2022-01-18 03:58:58,612 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 574 transitions. Word has length 21 [2022-01-18 03:58:58,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:58,612 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 574 transitions. [2022-01-18 03:58:58,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,612 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 574 transitions. [2022-01-18 03:58:58,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:58,613 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:58,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:58,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-18 03:58:58,613 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:58,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:58,613 INFO L85 PathProgramCache]: Analyzing trace with hash -486440243, now seen corresponding path program 114 times [2022-01-18 03:58:58,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:58,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569480311] [2022-01-18 03:58:58,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:58,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:58,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:58,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569480311] [2022-01-18 03:58:58,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569480311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:58,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:58,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:58,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329269326] [2022-01-18 03:58:58,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:58,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:58,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:58,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:58,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:58,686 INFO L87 Difference]: Start difference. First operand 200 states and 574 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:58,733 INFO L93 Difference]: Finished difference Result 291 states and 822 transitions. [2022-01-18 03:58:58,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:58,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:58,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:58,734 INFO L225 Difference]: With dead ends: 291 [2022-01-18 03:58:58,734 INFO L226 Difference]: Without dead ends: 180 [2022-01-18 03:58:58,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:58,734 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 55 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:58,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 64 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-01-18 03:58:58,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-01-18 03:58:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.916201117318436) internal successors, (522), 179 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 522 transitions. [2022-01-18 03:58:58,736 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 522 transitions. Word has length 21 [2022-01-18 03:58:58,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:58,736 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 522 transitions. [2022-01-18 03:58:58,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,736 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 522 transitions. [2022-01-18 03:58:58,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:58,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:58,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:58,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-18 03:58:58,737 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:58,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:58,737 INFO L85 PathProgramCache]: Analyzing trace with hash 367880497, now seen corresponding path program 115 times [2022-01-18 03:58:58,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:58,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268949997] [2022-01-18 03:58:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:58,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:58,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:58,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268949997] [2022-01-18 03:58:58,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268949997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:58,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:58,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:58,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666606380] [2022-01-18 03:58:58,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:58,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:58,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:58,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:58,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:58,821 INFO L87 Difference]: Start difference. First operand 180 states and 522 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:58,859 INFO L93 Difference]: Finished difference Result 323 states and 891 transitions. [2022-01-18 03:58:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:58,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:58,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:58,860 INFO L225 Difference]: With dead ends: 323 [2022-01-18 03:58:58,860 INFO L226 Difference]: Without dead ends: 244 [2022-01-18 03:58:58,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:58,860 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 58 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:58,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 53 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:58,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-01-18 03:58:58,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 180. [2022-01-18 03:58:58,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.8715083798882683) internal successors, (514), 179 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 514 transitions. [2022-01-18 03:58:58,862 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 514 transitions. Word has length 21 [2022-01-18 03:58:58,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:58,863 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 514 transitions. [2022-01-18 03:58:58,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,863 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 514 transitions. [2022-01-18 03:58:58,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:58,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:58,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:58,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-18 03:58:58,863 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:58,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:58,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1201048045, now seen corresponding path program 116 times [2022-01-18 03:58:58,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:58,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010825472] [2022-01-18 03:58:58,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:58,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:58,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:58,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010825472] [2022-01-18 03:58:58,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010825472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:58,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:58,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:58,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468708930] [2022-01-18 03:58:58,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:58,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:58,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:58,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:58,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:58,946 INFO L87 Difference]: Start difference. First operand 180 states and 514 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:58,994 INFO L93 Difference]: Finished difference Result 337 states and 928 transitions. [2022-01-18 03:58:58,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:58,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:58,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:58,994 INFO L225 Difference]: With dead ends: 337 [2022-01-18 03:58:58,994 INFO L226 Difference]: Without dead ends: 236 [2022-01-18 03:58:58,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:58,995 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 69 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:58,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 57 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:58,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-01-18 03:58:58,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 172. [2022-01-18 03:58:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.865497076023392) internal successors, (490), 171 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 490 transitions. [2022-01-18 03:58:58,997 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 490 transitions. Word has length 21 [2022-01-18 03:58:58,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:58,997 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 490 transitions. [2022-01-18 03:58:58,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:58,997 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 490 transitions. [2022-01-18 03:58:58,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:58,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:58,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:58,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-18 03:58:58,998 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:58,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:58,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1448943123, now seen corresponding path program 117 times [2022-01-18 03:58:58,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:58,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038320319] [2022-01-18 03:58:58,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:58,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:59,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:59,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038320319] [2022-01-18 03:58:59,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038320319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:59,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:59,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:59,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197950155] [2022-01-18 03:58:59,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:59,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:59,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:59,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:59,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:59,082 INFO L87 Difference]: Start difference. First operand 172 states and 490 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:59,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:59,122 INFO L93 Difference]: Finished difference Result 299 states and 811 transitions. [2022-01-18 03:58:59,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:59,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:59,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:59,123 INFO L225 Difference]: With dead ends: 299 [2022-01-18 03:58:59,123 INFO L226 Difference]: Without dead ends: 220 [2022-01-18 03:58:59,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:59,123 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 62 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:59,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 50 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:59,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-01-18 03:58:59,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 156. [2022-01-18 03:58:59,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.8) internal successors, (434), 155 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 434 transitions. [2022-01-18 03:58:59,125 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 434 transitions. Word has length 21 [2022-01-18 03:58:59,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:59,125 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 434 transitions. [2022-01-18 03:58:59,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:59,126 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 434 transitions. [2022-01-18 03:58:59,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:59,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:59,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:59,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-18 03:58:59,126 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:59,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:59,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1816719981, now seen corresponding path program 118 times [2022-01-18 03:58:59,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:59,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532177854] [2022-01-18 03:58:59,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:59,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:59,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:59,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:59,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532177854] [2022-01-18 03:58:59,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532177854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:59,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:59,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:59,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960000163] [2022-01-18 03:58:59,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:59,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:59,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:59,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:59,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:59,204 INFO L87 Difference]: Start difference. First operand 156 states and 434 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:59,250 INFO L93 Difference]: Finished difference Result 247 states and 682 transitions. [2022-01-18 03:58:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:59,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:59,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:59,250 INFO L225 Difference]: With dead ends: 247 [2022-01-18 03:58:59,251 INFO L226 Difference]: Without dead ends: 148 [2022-01-18 03:58:59,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:59,251 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 65 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:59,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 50 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:59,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-01-18 03:58:59,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-01-18 03:58:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.7891156462585034) internal successors, (410), 147 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:59,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 410 transitions. [2022-01-18 03:58:59,253 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 410 transitions. Word has length 21 [2022-01-18 03:58:59,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:59,253 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 410 transitions. [2022-01-18 03:58:59,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:59,253 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 410 transitions. [2022-01-18 03:58:59,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:59,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:59,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:59,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-18 03:58:59,253 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:59,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:59,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1599240693, now seen corresponding path program 119 times [2022-01-18 03:58:59,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:59,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482658329] [2022-01-18 03:58:59,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:59,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:59,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:59,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482658329] [2022-01-18 03:58:59,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482658329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:59,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:59,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:59,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78888927] [2022-01-18 03:58:59,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:59,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:59,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:59,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:59,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:59,344 INFO L87 Difference]: Start difference. First operand 148 states and 410 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:59,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:59,389 INFO L93 Difference]: Finished difference Result 211 states and 570 transitions. [2022-01-18 03:58:59,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:59,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:59,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:59,389 INFO L225 Difference]: With dead ends: 211 [2022-01-18 03:58:59,389 INFO L226 Difference]: Without dead ends: 118 [2022-01-18 03:58:59,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:59,389 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 35 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:59,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 43 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:59,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-01-18 03:58:59,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-01-18 03:58:59,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.58974358974359) internal successors, (303), 117 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:59,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 303 transitions. [2022-01-18 03:58:59,391 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 303 transitions. Word has length 21 [2022-01-18 03:58:59,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:59,391 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 303 transitions. [2022-01-18 03:58:59,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:59,391 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 303 transitions. [2022-01-18 03:58:59,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 03:58:59,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:58:59,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:58:59,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-18 03:58:59,391 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:58:59,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:58:59,392 INFO L85 PathProgramCache]: Analyzing trace with hash -444096301, now seen corresponding path program 120 times [2022-01-18 03:58:59,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:58:59,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357287912] [2022-01-18 03:58:59,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:58:59,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:58:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:58:59,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:58:59,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:58:59,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357287912] [2022-01-18 03:58:59,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357287912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:58:59,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:58:59,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:58:59,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318248992] [2022-01-18 03:58:59,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:58:59,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:58:59,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:58:59,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:58:59,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:58:59,467 INFO L87 Difference]: Start difference. First operand 118 states and 303 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:59,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:58:59,508 INFO L93 Difference]: Finished difference Result 117 states and 302 transitions. [2022-01-18 03:58:59,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:58:59,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 03:58:59,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:58:59,508 INFO L225 Difference]: With dead ends: 117 [2022-01-18 03:58:59,508 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 03:58:59,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:58:59,509 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:58:59,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 37 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:58:59,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 03:58:59,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 03:58:59,509 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) [2022-01-18 03:58:59,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 03:58:59,509 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-01-18 03:58:59,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:58:59,509 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 03:58:59,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:58:59,509 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 03:58:59,509 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 03:58:59,511 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2022-01-18 03:58:59,511 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 6 remaining) [2022-01-18 03:58:59,511 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 6 remaining) [2022-01-18 03:58:59,512 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (2 of 6 remaining) [2022-01-18 03:58:59,512 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (1 of 6 remaining) [2022-01-18 03:58:59,512 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION (0 of 6 remaining) [2022-01-18 03:58:59,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-18 03:58:59,514 INFO L732 BasicCegarLoop]: Path program histogram: [120, 1, 1, 1, 1] [2022-01-18 03:58:59,515 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 03:58:59,515 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 03:58:59,516 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 03:58:59 BasicIcfg [2022-01-18 03:58:59,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 03:58:59,516 INFO L158 Benchmark]: Toolchain (without parser) took 21161.56ms. Allocated memory was 413.1MB in the beginning and 631.2MB in the end (delta: 218.1MB). Free memory was 371.2MB in the beginning and 571.9MB in the end (delta: -200.7MB). Peak memory consumption was 20.2MB. Max. memory is 16.0GB. [2022-01-18 03:58:59,516 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 413.1MB. Free memory is still 372.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:58:59,516 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.65ms. Allocated memory is still 413.1MB. Free memory was 371.1MB in the beginning and 369.5MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2022-01-18 03:58:59,516 INFO L158 Benchmark]: Boogie Preprocessor took 12.38ms. Allocated memory is still 413.1MB. Free memory was 369.5MB in the beginning and 368.7MB in the end (delta: 884.5kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:58:59,517 INFO L158 Benchmark]: RCFGBuilder took 170.23ms. Allocated memory is still 413.1MB. Free memory was 368.5MB in the beginning and 360.3MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2022-01-18 03:58:59,517 INFO L158 Benchmark]: TraceAbstraction took 20952.47ms. Allocated memory was 413.1MB in the beginning and 631.2MB in the end (delta: 218.1MB). Free memory was 359.8MB in the beginning and 571.9MB in the end (delta: -212.1MB). Peak memory consumption was 7.6MB. Max. memory is 16.0GB. [2022-01-18 03:58:59,517 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 0.09ms. Allocated memory is still 413.1MB. Free memory is still 372.1MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 20.65ms. Allocated memory is still 413.1MB. Free memory was 371.1MB in the beginning and 369.5MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 12.38ms. Allocated memory is still 413.1MB. Free memory was 369.5MB in the beginning and 368.7MB in the end (delta: 884.5kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 170.23ms. Allocated memory is still 413.1MB. Free memory was 368.5MB in the beginning and 360.3MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * TraceAbstraction took 20952.47ms. Allocated memory was 413.1MB in the beginning and 631.2MB in the end (delta: 218.1MB). Free memory was 359.8MB in the beginning and 571.9MB in the end (delta: -212.1MB). Peak memory consumption was 7.6MB. Max. memory is 16.0GB. * 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: 23]: 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 11 procedures, 49 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 20.9s, OverallIterations: 124, TraceHistogramMax: 1, PathProgramHistogramMax: 120, EmptinessCheckTime: 0.1s, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8969 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8969 mSDsluCounter, 10918 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13706 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12807 IncrementalHoareTripleChecker+Invalid, 12813 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 4247 mSDtfsCounter, 12807 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 852 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 724 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1146occurred in iteration=0, InterpolantAutomatonStates: 852, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 124 MinimizatonAttempts, 38456 StatesRemovedByMinimization, 116 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 2604 NumberOfCodeBlocks, 2604 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 2480 ConstructedInterpolants, 0 QuantifiedInterpolants, 47745 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 124 InterpolantComputations, 124 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! [2022-01-18 03:58:59,542 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...