/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 17:07:02,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 17:07:02,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 17:07:02,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 17:07:02,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 17:07:02,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 17:07:02,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 17:07:02,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-01 17:07:02,246 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 17:07:02,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 17:07:02,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 17:07:02,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 17:07:02,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 17:07:02,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 17:07:02,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 17:07:02,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 17:07:02,248 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 17:07:02,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 17:07:02,248 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 17:07:02,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 17:07:02,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 17:07:02,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 17:07:02,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 17:07:02,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 17:07:02,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 17:07:02,249 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 17:07:02,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 17:07:02,249 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 17:07:02,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 17:07:02,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 17:07:02,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 17:07:02,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 17:07:02,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 17:07:02,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:07:02,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 17:07:02,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 17:07:02,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 17:07:02,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 17:07:02,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 17:07:02,251 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 17:07:02,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 17:07:02,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 17:07:02,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 17:07:02,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 17:07:02,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 17:07:02,406 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-01 17:07:02,407 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-01 17:07:02,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl [2022-03-01 17:07:02,408 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl' [2022-03-01 17:07:02,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 17:07:02,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-01 17:07:02,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 17:07:02,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 17:07:02,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 17:07:02,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:02" (1/1) ... [2022-03-01 17:07:02,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:02" (1/1) ... [2022-03-01 17:07:02,450 INFO L137 Inliner]: procedures = 6, calls = 5, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-01 17:07:02,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 17:07:02,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 17:07:02,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 17:07:02,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 17:07:02,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:02" (1/1) ... [2022-03-01 17:07:02,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:02" (1/1) ... [2022-03-01 17:07:02,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:02" (1/1) ... [2022-03-01 17:07:02,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:02" (1/1) ... [2022-03-01 17:07:02,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:02" (1/1) ... [2022-03-01 17:07:02,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:02" (1/1) ... [2022-03-01 17:07:02,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:02" (1/1) ... [2022-03-01 17:07:02,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 17:07:02,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 17:07:02,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 17:07:02,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 17:07:02,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:02" (1/1) ... [2022-03-01 17:07:02,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:07:02,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:07:02,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 17:07:02,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 17:07:02,528 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2022-03-01 17:07:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2022-03-01 17:07:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2022-03-01 17:07:02,528 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2022-03-01 17:07:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2022-03-01 17:07:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2022-03-01 17:07:02,528 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2022-03-01 17:07:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2022-03-01 17:07:02,529 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2022-03-01 17:07:02,529 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2022-03-01 17:07:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2022-03-01 17:07:02,529 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2022-03-01 17:07:02,529 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2022-03-01 17:07:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2022-03-01 17:07:02,529 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2022-03-01 17:07:02,529 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-01 17:07:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 17:07:02,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 17:07:02,535 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 17:07:02,565 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 17:07:02,566 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 17:07:02,630 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 17:07:02,635 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 17:07:02,635 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-01 17:07:02,636 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:07:02 BoogieIcfgContainer [2022-03-01 17:07:02,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 17:07:02,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 17:07:02,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 17:07:02,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 17:07:02,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:07:02" (1/2) ... [2022-03-01 17:07:02,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6446f949 and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 05:07:02, skipping insertion in model container [2022-03-01 17:07:02,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:07:02" (2/2) ... [2022-03-01 17:07:02,661 INFO L111 eAbstractionObserver]: Analyzing ICFG example_5.bpl [2022-03-01 17:07:02,665 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 17:07:02,665 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 17:07:02,665 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 17:07:02,665 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 17:07:02,706 INFO L148 ThreadInstanceAdder]: Constructed 25 joinOtherThreadTransitions. [2022-03-01 17:07:02,775 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 17:07:02,781 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 17:07:02,781 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-03-01 17:07:02,794 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 48 transitions, 196 flow [2022-03-01 17:07:02,905 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) [2022-03-01 17:07:02,908 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) [2022-03-01 17:07:02,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:02,928 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:02,929 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] [2022-03-01 17:07:02,929 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:02,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:02,933 INFO L85 PathProgramCache]: Analyzing trace with hash 921696585, now seen corresponding path program 1 times [2022-03-01 17:07:02,939 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:02,939 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577602513] [2022-03-01 17:07:02,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:02,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:03,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:03,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577602513] [2022-03-01 17:07:03,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577602513] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:03,104 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:03,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:07:03,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208429944] [2022-03-01 17:07:03,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:03,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 17:07:03,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:03,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 17:07:03,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:07:03,143 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) [2022-03-01 17:07:03,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:03,236 INFO L93 Difference]: Finished difference Result 903 states and 3247 transitions. [2022-03-01 17:07:03,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 17:07:03,240 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 [2022-03-01 17:07:03,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:03,265 INFO L225 Difference]: With dead ends: 903 [2022-03-01 17:07:03,266 INFO L226 Difference]: Without dead ends: 903 [2022-03-01 17:07:03,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:07:03,271 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 [2022-03-01 17:07:03,273 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] [2022-03-01 17:07:03,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-03-01 17:07:03,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 903. [2022-03-01 17:07:03,395 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) [2022-03-01 17:07:03,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 3247 transitions. [2022-03-01 17:07:03,401 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 3247 transitions. Word has length 21 [2022-03-01 17:07:03,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:03,402 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 3247 transitions. [2022-03-01 17:07:03,402 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) [2022-03-01 17:07:03,402 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 3247 transitions. [2022-03-01 17:07:03,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:03,405 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:03,405 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] [2022-03-01 17:07:03,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 17:07:03,406 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:03,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:03,406 INFO L85 PathProgramCache]: Analyzing trace with hash 922619145, now seen corresponding path program 1 times [2022-03-01 17:07:03,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:03,407 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538716606] [2022-03-01 17:07:03,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:03,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:03,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:03,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538716606] [2022-03-01 17:07:03,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538716606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:03,429 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:03,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:07:03,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734384427] [2022-03-01 17:07:03,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:03,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 17:07:03,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:03,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 17:07:03,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:07:03,431 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) [2022-03-01 17:07:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:03,461 INFO L93 Difference]: Finished difference Result 741 states and 2572 transitions. [2022-03-01 17:07:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 17:07:03,461 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 [2022-03-01 17:07:03,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:03,465 INFO L225 Difference]: With dead ends: 741 [2022-03-01 17:07:03,466 INFO L226 Difference]: Without dead ends: 741 [2022-03-01 17:07:03,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:07:03,467 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 [2022-03-01 17:07:03,467 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] [2022-03-01 17:07:03,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-03-01 17:07:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2022-03-01 17:07:03,487 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) [2022-03-01 17:07:03,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 2572 transitions. [2022-03-01 17:07:03,491 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 2572 transitions. Word has length 21 [2022-03-01 17:07:03,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:03,491 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 2572 transitions. [2022-03-01 17:07:03,491 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) [2022-03-01 17:07:03,491 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 2572 transitions. [2022-03-01 17:07:03,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:03,493 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:03,494 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] [2022-03-01 17:07:03,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 17:07:03,494 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:03,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:03,494 INFO L85 PathProgramCache]: Analyzing trace with hash 923542635, now seen corresponding path program 1 times [2022-03-01 17:07:03,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:03,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993584606] [2022-03-01 17:07:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:03,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:03,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:03,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993584606] [2022-03-01 17:07:03,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993584606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:03,522 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:03,522 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:07:03,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615561108] [2022-03-01 17:07:03,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:03,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 17:07:03,523 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:03,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 17:07:03,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:07:03,524 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) [2022-03-01 17:07:03,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:03,550 INFO L93 Difference]: Finished difference Result 567 states and 1945 transitions. [2022-03-01 17:07:03,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 17:07:03,550 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 [2022-03-01 17:07:03,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:03,553 INFO L225 Difference]: With dead ends: 567 [2022-03-01 17:07:03,554 INFO L226 Difference]: Without dead ends: 567 [2022-03-01 17:07:03,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:07:03,559 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 [2022-03-01 17:07:03,560 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] [2022-03-01 17:07:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-03-01 17:07:03,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2022-03-01 17:07:03,574 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) [2022-03-01 17:07:03,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1945 transitions. [2022-03-01 17:07:03,576 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1945 transitions. Word has length 21 [2022-03-01 17:07:03,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:03,577 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 1945 transitions. [2022-03-01 17:07:03,577 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) [2022-03-01 17:07:03,577 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1945 transitions. [2022-03-01 17:07:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:03,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:03,579 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] [2022-03-01 17:07:03,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 17:07:03,579 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:03,579 INFO L85 PathProgramCache]: Analyzing trace with hash 924406605, now seen corresponding path program 1 times [2022-03-01 17:07:03,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:03,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451889010] [2022-03-01 17:07:03,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:03,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:03,743 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:03,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451889010] [2022-03-01 17:07:03,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451889010] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:03,743 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:03,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:03,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937319377] [2022-03-01 17:07:03,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:03,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:03,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:03,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:03,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:03,745 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) [2022-03-01 17:07:03,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:03,884 INFO L93 Difference]: Finished difference Result 1267 states and 4072 transitions. [2022-03-01 17:07:03,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:03,885 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 [2022-03-01 17:07:03,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:03,890 INFO L225 Difference]: With dead ends: 1267 [2022-03-01 17:07:03,891 INFO L226 Difference]: Without dead ends: 1133 [2022-03-01 17:07:03,891 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 [2022-03-01 17:07:03,892 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 [2022-03-01 17:07:03,892 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] [2022-03-01 17:07:03,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-03-01 17:07:03,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 616. [2022-03-01 17:07:03,910 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) [2022-03-01 17:07:03,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 2091 transitions. [2022-03-01 17:07:03,912 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 2091 transitions. Word has length 21 [2022-03-01 17:07:03,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:03,913 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 2091 transitions. [2022-03-01 17:07:03,913 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) [2022-03-01 17:07:03,913 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 2091 transitions. [2022-03-01 17:07:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:03,914 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:03,915 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] [2022-03-01 17:07:03,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-01 17:07:03,915 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:03,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:03,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1025849041, now seen corresponding path program 2 times [2022-03-01 17:07:03,915 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:03,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170634535] [2022-03-01 17:07:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:03,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:04,037 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:04,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170634535] [2022-03-01 17:07:04,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170634535] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:04,038 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:04,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:04,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210527196] [2022-03-01 17:07:04,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:04,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:04,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:04,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:04,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:04,039 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) [2022-03-01 17:07:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:04,147 INFO L93 Difference]: Finished difference Result 1250 states and 3995 transitions. [2022-03-01 17:07:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:04,148 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 [2022-03-01 17:07:04,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:04,153 INFO L225 Difference]: With dead ends: 1250 [2022-03-01 17:07:04,153 INFO L226 Difference]: Without dead ends: 1098 [2022-03-01 17:07:04,154 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 [2022-03-01 17:07:04,154 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 [2022-03-01 17:07:04,155 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] [2022-03-01 17:07:04,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-03-01 17:07:04,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 581. [2022-03-01 17:07:04,171 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) [2022-03-01 17:07:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1984 transitions. [2022-03-01 17:07:04,173 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1984 transitions. Word has length 21 [2022-03-01 17:07:04,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:04,173 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 1984 transitions. [2022-03-01 17:07:04,173 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) [2022-03-01 17:07:04,173 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1984 transitions. [2022-03-01 17:07:04,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:04,175 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:04,175 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] [2022-03-01 17:07:04,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-01 17:07:04,175 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:04,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:04,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1173110165, now seen corresponding path program 3 times [2022-03-01 17:07:04,175 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:04,176 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448911115] [2022-03-01 17:07:04,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:04,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:04,301 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:04,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448911115] [2022-03-01 17:07:04,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448911115] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:04,301 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:04,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:04,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72898822] [2022-03-01 17:07:04,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:04,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:04,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:04,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:04,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:04,303 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) [2022-03-01 17:07:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:04,433 INFO L93 Difference]: Finished difference Result 1207 states and 3862 transitions. [2022-03-01 17:07:04,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:04,433 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 [2022-03-01 17:07:04,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:04,439 INFO L225 Difference]: With dead ends: 1207 [2022-03-01 17:07:04,439 INFO L226 Difference]: Without dead ends: 1104 [2022-03-01 17:07:04,439 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 [2022-03-01 17:07:04,440 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 [2022-03-01 17:07:04,440 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] [2022-03-01 17:07:04,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2022-03-01 17:07:04,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 601. [2022-03-01 17:07:04,457 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) [2022-03-01 17:07:04,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 2044 transitions. [2022-03-01 17:07:04,459 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 2044 transitions. Word has length 21 [2022-03-01 17:07:04,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:04,459 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 2044 transitions. [2022-03-01 17:07:04,459 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) [2022-03-01 17:07:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 2044 transitions. [2022-03-01 17:07:04,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:04,461 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:04,461 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] [2022-03-01 17:07:04,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 17:07:04,461 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:04,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:04,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1256430157, now seen corresponding path program 4 times [2022-03-01 17:07:04,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:04,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44464148] [2022-03-01 17:07:04,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:04,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:04,566 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:04,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44464148] [2022-03-01 17:07:04,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44464148] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:04,566 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:04,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:04,566 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633223684] [2022-03-01 17:07:04,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:04,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:04,567 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:04,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:04,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:04,567 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) [2022-03-01 17:07:04,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:04,669 INFO L93 Difference]: Finished difference Result 1238 states and 3949 transitions. [2022-03-01 17:07:04,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:04,670 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 [2022-03-01 17:07:04,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:04,675 INFO L225 Difference]: With dead ends: 1238 [2022-03-01 17:07:04,675 INFO L226 Difference]: Without dead ends: 1084 [2022-03-01 17:07:04,675 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 [2022-03-01 17:07:04,676 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 [2022-03-01 17:07:04,676 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] [2022-03-01 17:07:04,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2022-03-01 17:07:04,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 581. [2022-03-01 17:07:04,691 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) [2022-03-01 17:07:04,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1974 transitions. [2022-03-01 17:07:04,693 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1974 transitions. Word has length 21 [2022-03-01 17:07:04,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:04,693 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 1974 transitions. [2022-03-01 17:07:04,694 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) [2022-03-01 17:07:04,694 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1974 transitions. [2022-03-01 17:07:04,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:04,695 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:04,695 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] [2022-03-01 17:07:04,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-01 17:07:04,695 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:04,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:04,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1531922381, now seen corresponding path program 5 times [2022-03-01 17:07:04,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:04,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121718397] [2022-03-01 17:07:04,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:04,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:04,798 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:04,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121718397] [2022-03-01 17:07:04,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121718397] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:04,798 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:04,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:04,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338260754] [2022-03-01 17:07:04,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:04,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:04,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:04,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:04,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:04,799 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) [2022-03-01 17:07:04,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:04,906 INFO L93 Difference]: Finished difference Result 1182 states and 3774 transitions. [2022-03-01 17:07:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:04,907 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 [2022-03-01 17:07:04,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:04,912 INFO L225 Difference]: With dead ends: 1182 [2022-03-01 17:07:04,912 INFO L226 Difference]: Without dead ends: 1079 [2022-03-01 17:07:04,912 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 [2022-03-01 17:07:04,914 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 [2022-03-01 17:07:04,914 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] [2022-03-01 17:07:04,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-01 17:07:04,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 593. [2022-03-01 17:07:04,930 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) [2022-03-01 17:07:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 2006 transitions. [2022-03-01 17:07:04,932 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 2006 transitions. Word has length 21 [2022-03-01 17:07:04,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:04,933 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 2006 transitions. [2022-03-01 17:07:04,933 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) [2022-03-01 17:07:04,933 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 2006 transitions. [2022-03-01 17:07:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:04,935 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:04,935 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] [2022-03-01 17:07:04,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-01 17:07:04,936 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:04,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:04,937 INFO L85 PathProgramCache]: Analyzing trace with hash 598806989, now seen corresponding path program 6 times [2022-03-01 17:07:04,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:04,941 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543742419] [2022-03-01 17:07:04,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:04,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:05,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:05,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543742419] [2022-03-01 17:07:05,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543742419] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:05,054 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:05,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:05,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867455333] [2022-03-01 17:07:05,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:05,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:05,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:05,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:05,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:05,056 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) [2022-03-01 17:07:05,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:05,160 INFO L93 Difference]: Finished difference Result 1196 states and 3811 transitions. [2022-03-01 17:07:05,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:05,160 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 [2022-03-01 17:07:05,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:05,165 INFO L225 Difference]: With dead ends: 1196 [2022-03-01 17:07:05,165 INFO L226 Difference]: Without dead ends: 1053 [2022-03-01 17:07:05,165 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 [2022-03-01 17:07:05,166 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 [2022-03-01 17:07:05,166 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] [2022-03-01 17:07:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-03-01 17:07:05,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 567. [2022-03-01 17:07:05,179 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) [2022-03-01 17:07:05,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1938 transitions. [2022-03-01 17:07:05,181 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1938 transitions. Word has length 21 [2022-03-01 17:07:05,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:05,181 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 1938 transitions. [2022-03-01 17:07:05,181 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) [2022-03-01 17:07:05,182 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1938 transitions. [2022-03-01 17:07:05,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:05,183 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:05,183 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] [2022-03-01 17:07:05,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-01 17:07:05,183 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:05,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:05,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1078752725, now seen corresponding path program 7 times [2022-03-01 17:07:05,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:05,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468462022] [2022-03-01 17:07:05,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:05,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:05,273 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:05,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468462022] [2022-03-01 17:07:05,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468462022] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:05,273 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:05,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:05,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580211751] [2022-03-01 17:07:05,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:05,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:05,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:05,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:05,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:05,274 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) [2022-03-01 17:07:05,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:05,365 INFO L93 Difference]: Finished difference Result 1298 states and 4181 transitions. [2022-03-01 17:07:05,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:05,366 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 [2022-03-01 17:07:05,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:05,371 INFO L225 Difference]: With dead ends: 1298 [2022-03-01 17:07:05,371 INFO L226 Difference]: Without dead ends: 1164 [2022-03-01 17:07:05,372 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 [2022-03-01 17:07:05,372 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 [2022-03-01 17:07:05,372 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] [2022-03-01 17:07:05,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-03-01 17:07:05,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 623. [2022-03-01 17:07:05,407 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) [2022-03-01 17:07:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 2106 transitions. [2022-03-01 17:07:05,408 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 2106 transitions. Word has length 21 [2022-03-01 17:07:05,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:05,409 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 2106 transitions. [2022-03-01 17:07:05,409 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) [2022-03-01 17:07:05,409 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 2106 transitions. [2022-03-01 17:07:05,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:05,410 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:05,410 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] [2022-03-01 17:07:05,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-01 17:07:05,411 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:05,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:05,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1265958925, now seen corresponding path program 8 times [2022-03-01 17:07:05,411 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:05,411 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557038872] [2022-03-01 17:07:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:05,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:05,499 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:05,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557038872] [2022-03-01 17:07:05,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557038872] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:05,499 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:05,499 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:05,500 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817011083] [2022-03-01 17:07:05,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:05,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:05,500 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:05,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:05,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:05,500 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) [2022-03-01 17:07:05,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:05,604 INFO L93 Difference]: Finished difference Result 1281 states and 4104 transitions. [2022-03-01 17:07:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:05,604 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 [2022-03-01 17:07:05,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:05,609 INFO L225 Difference]: With dead ends: 1281 [2022-03-01 17:07:05,610 INFO L226 Difference]: Without dead ends: 1129 [2022-03-01 17:07:05,610 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 [2022-03-01 17:07:05,610 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 [2022-03-01 17:07:05,611 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] [2022-03-01 17:07:05,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2022-03-01 17:07:05,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 588. [2022-03-01 17:07:05,625 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) [2022-03-01 17:07:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1996 transitions. [2022-03-01 17:07:05,627 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1996 transitions. Word has length 21 [2022-03-01 17:07:05,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:05,627 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1996 transitions. [2022-03-01 17:07:05,628 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) [2022-03-01 17:07:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1996 transitions. [2022-03-01 17:07:05,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:05,629 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:05,629 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] [2022-03-01 17:07:05,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-01 17:07:05,629 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:05,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:05,630 INFO L85 PathProgramCache]: Analyzing trace with hash 560967501, now seen corresponding path program 9 times [2022-03-01 17:07:05,630 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:05,630 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499158792] [2022-03-01 17:07:05,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:05,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:05,719 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:05,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499158792] [2022-03-01 17:07:05,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499158792] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:05,719 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:05,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:05,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645736815] [2022-03-01 17:07:05,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:05,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:05,720 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:05,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:05,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:05,720 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) [2022-03-01 17:07:05,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:05,799 INFO L93 Difference]: Finished difference Result 1287 states and 4136 transitions. [2022-03-01 17:07:05,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:05,799 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 [2022-03-01 17:07:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:05,805 INFO L225 Difference]: With dead ends: 1287 [2022-03-01 17:07:05,805 INFO L226 Difference]: Without dead ends: 1153 [2022-03-01 17:07:05,805 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 [2022-03-01 17:07:05,806 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 [2022-03-01 17:07:05,806 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] [2022-03-01 17:07:05,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2022-03-01 17:07:05,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 614. [2022-03-01 17:07:05,822 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) [2022-03-01 17:07:05,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 2067 transitions. [2022-03-01 17:07:05,823 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 2067 transitions. Word has length 21 [2022-03-01 17:07:05,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:05,824 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 2067 transitions. [2022-03-01 17:07:05,824 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) [2022-03-01 17:07:05,824 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 2067 transitions. [2022-03-01 17:07:05,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:05,825 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:05,825 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] [2022-03-01 17:07:05,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-01 17:07:05,825 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:05,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:05,826 INFO L85 PathProgramCache]: Analyzing trace with hash -456976563, now seen corresponding path program 10 times [2022-03-01 17:07:05,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:05,826 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999628182] [2022-03-01 17:07:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:05,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:05,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:05,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999628182] [2022-03-01 17:07:05,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999628182] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:05,912 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:05,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:05,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188876320] [2022-03-01 17:07:05,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:05,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:05,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:05,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:05,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:05,913 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) [2022-03-01 17:07:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:06,019 INFO L93 Difference]: Finished difference Result 1268 states and 4055 transitions. [2022-03-01 17:07:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:06,019 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 [2022-03-01 17:07:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:06,025 INFO L225 Difference]: With dead ends: 1268 [2022-03-01 17:07:06,025 INFO L226 Difference]: Without dead ends: 1127 [2022-03-01 17:07:06,025 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 [2022-03-01 17:07:06,026 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 [2022-03-01 17:07:06,026 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] [2022-03-01 17:07:06,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-03-01 17:07:06,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 588. [2022-03-01 17:07:06,042 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) [2022-03-01 17:07:06,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1983 transitions. [2022-03-01 17:07:06,060 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1983 transitions. Word has length 21 [2022-03-01 17:07:06,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:06,060 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1983 transitions. [2022-03-01 17:07:06,060 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) [2022-03-01 17:07:06,060 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1983 transitions. [2022-03-01 17:07:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:06,062 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:06,062 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] [2022-03-01 17:07:06,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-01 17:07:06,062 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:06,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:06,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1368281937, now seen corresponding path program 11 times [2022-03-01 17:07:06,063 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:06,063 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863884005] [2022-03-01 17:07:06,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:06,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:06,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:06,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:06,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863884005] [2022-03-01 17:07:06,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863884005] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:06,160 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:06,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:06,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794646161] [2022-03-01 17:07:06,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:06,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:06,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:06,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:06,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:06,161 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) [2022-03-01 17:07:06,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:06,261 INFO L93 Difference]: Finished difference Result 1245 states and 3995 transitions. [2022-03-01 17:07:06,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:06,262 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 [2022-03-01 17:07:06,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:06,279 INFO L225 Difference]: With dead ends: 1245 [2022-03-01 17:07:06,280 INFO L226 Difference]: Without dead ends: 1128 [2022-03-01 17:07:06,280 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 [2022-03-01 17:07:06,280 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 [2022-03-01 17:07:06,281 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] [2022-03-01 17:07:06,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-03-01 17:07:06,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 606. [2022-03-01 17:07:06,297 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) [2022-03-01 17:07:06,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 2034 transitions. [2022-03-01 17:07:06,299 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 2034 transitions. Word has length 21 [2022-03-01 17:07:06,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:06,299 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 2034 transitions. [2022-03-01 17:07:06,300 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) [2022-03-01 17:07:06,300 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 2034 transitions. [2022-03-01 17:07:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:06,301 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:06,301 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] [2022-03-01 17:07:06,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-01 17:07:06,301 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:06,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:06,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1696664819, now seen corresponding path program 12 times [2022-03-01 17:07:06,302 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:06,302 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657107381] [2022-03-01 17:07:06,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:06,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:06,397 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:06,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657107381] [2022-03-01 17:07:06,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657107381] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:06,397 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:06,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:06,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066792643] [2022-03-01 17:07:06,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:06,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:06,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:06,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:06,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:06,398 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) [2022-03-01 17:07:06,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:06,499 INFO L93 Difference]: Finished difference Result 1243 states and 3972 transitions. [2022-03-01 17:07:06,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:06,499 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 [2022-03-01 17:07:06,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:06,503 INFO L225 Difference]: With dead ends: 1243 [2022-03-01 17:07:06,503 INFO L226 Difference]: Without dead ends: 1089 [2022-03-01 17:07:06,503 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 [2022-03-01 17:07:06,503 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 [2022-03-01 17:07:06,503 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] [2022-03-01 17:07:06,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2022-03-01 17:07:06,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 567. [2022-03-01 17:07:06,516 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) [2022-03-01 17:07:06,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1929 transitions. [2022-03-01 17:07:06,518 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1929 transitions. Word has length 21 [2022-03-01 17:07:06,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:06,518 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 1929 transitions. [2022-03-01 17:07:06,518 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) [2022-03-01 17:07:06,518 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1929 transitions. [2022-03-01 17:07:06,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:06,519 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:06,519 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] [2022-03-01 17:07:06,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-01 17:07:06,519 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:06,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:06,520 INFO L85 PathProgramCache]: Analyzing trace with hash 467668587, now seen corresponding path program 13 times [2022-03-01 17:07:06,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:06,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094975655] [2022-03-01 17:07:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:06,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:06,599 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:06,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094975655] [2022-03-01 17:07:06,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094975655] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:06,599 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:06,599 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:06,599 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756883900] [2022-03-01 17:07:06,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:06,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:06,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:06,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:06,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:06,600 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) [2022-03-01 17:07:06,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:06,709 INFO L93 Difference]: Finished difference Result 1192 states and 3820 transitions. [2022-03-01 17:07:06,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:06,709 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 [2022-03-01 17:07:06,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:06,712 INFO L225 Difference]: With dead ends: 1192 [2022-03-01 17:07:06,712 INFO L226 Difference]: Without dead ends: 1089 [2022-03-01 17:07:06,712 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 [2022-03-01 17:07:06,713 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 [2022-03-01 17:07:06,713 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] [2022-03-01 17:07:06,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2022-03-01 17:07:06,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 597. [2022-03-01 17:07:06,726 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) [2022-03-01 17:07:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 2030 transitions. [2022-03-01 17:07:06,727 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 2030 transitions. Word has length 21 [2022-03-01 17:07:06,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:06,727 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 2030 transitions. [2022-03-01 17:07:06,728 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) [2022-03-01 17:07:06,728 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 2030 transitions. [2022-03-01 17:07:06,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:06,729 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:06,729 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] [2022-03-01 17:07:06,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-01 17:07:06,729 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:06,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:06,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1397758387, now seen corresponding path program 14 times [2022-03-01 17:07:06,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:06,730 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496495865] [2022-03-01 17:07:06,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:06,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:06,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:06,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496495865] [2022-03-01 17:07:06,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496495865] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:06,811 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:06,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:06,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319019683] [2022-03-01 17:07:06,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:06,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:06,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:06,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:06,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:06,812 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) [2022-03-01 17:07:06,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:06,908 INFO L93 Difference]: Finished difference Result 1223 states and 3907 transitions. [2022-03-01 17:07:06,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:06,908 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 [2022-03-01 17:07:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:06,918 INFO L225 Difference]: With dead ends: 1223 [2022-03-01 17:07:06,918 INFO L226 Difference]: Without dead ends: 1069 [2022-03-01 17:07:06,919 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 [2022-03-01 17:07:06,919 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 [2022-03-01 17:07:06,919 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] [2022-03-01 17:07:06,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-03-01 17:07:06,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 577. [2022-03-01 17:07:06,932 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) [2022-03-01 17:07:06,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1960 transitions. [2022-03-01 17:07:06,934 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1960 transitions. Word has length 21 [2022-03-01 17:07:06,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:06,934 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 1960 transitions. [2022-03-01 17:07:06,934 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) [2022-03-01 17:07:06,934 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1960 transitions. [2022-03-01 17:07:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:06,935 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:06,935 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] [2022-03-01 17:07:06,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-01 17:07:06,936 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:06,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1475966571, now seen corresponding path program 15 times [2022-03-01 17:07:06,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:06,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508602889] [2022-03-01 17:07:06,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:06,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:07,061 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:07,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508602889] [2022-03-01 17:07:07,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508602889] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:07,061 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:07,061 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:07,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686919651] [2022-03-01 17:07:07,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:07,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:07,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:07,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:07,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:07,062 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) [2022-03-01 17:07:07,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:07,166 INFO L93 Difference]: Finished difference Result 1165 states and 3727 transitions. [2022-03-01 17:07:07,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:07,166 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 [2022-03-01 17:07:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:07,169 INFO L225 Difference]: With dead ends: 1165 [2022-03-01 17:07:07,169 INFO L226 Difference]: Without dead ends: 1062 [2022-03-01 17:07:07,169 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 [2022-03-01 17:07:07,170 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 [2022-03-01 17:07:07,170 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] [2022-03-01 17:07:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2022-03-01 17:07:07,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 589. [2022-03-01 17:07:07,182 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) [2022-03-01 17:07:07,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 1992 transitions. [2022-03-01 17:07:07,184 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 1992 transitions. Word has length 21 [2022-03-01 17:07:07,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:07,184 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 1992 transitions. [2022-03-01 17:07:07,184 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) [2022-03-01 17:07:07,184 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 1992 transitions. [2022-03-01 17:07:07,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:07,185 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:07,185 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] [2022-03-01 17:07:07,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-01 17:07:07,185 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:07,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:07,186 INFO L85 PathProgramCache]: Analyzing trace with hash -135778197, now seen corresponding path program 16 times [2022-03-01 17:07:07,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:07,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453751000] [2022-03-01 17:07:07,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:07,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:07,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:07,264 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:07,264 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453751000] [2022-03-01 17:07:07,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453751000] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:07,264 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:07,264 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:07,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099576015] [2022-03-01 17:07:07,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:07,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:07,265 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:07,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:07,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:07,265 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) [2022-03-01 17:07:07,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:07,355 INFO L93 Difference]: Finished difference Result 1177 states and 3759 transitions. [2022-03-01 17:07:07,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:07,356 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 [2022-03-01 17:07:07,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:07,358 INFO L225 Difference]: With dead ends: 1177 [2022-03-01 17:07:07,358 INFO L226 Difference]: Without dead ends: 1050 [2022-03-01 17:07:07,359 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 [2022-03-01 17:07:07,359 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 [2022-03-01 17:07:07,359 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] [2022-03-01 17:07:07,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-03-01 17:07:07,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 577. [2022-03-01 17:07:07,371 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) [2022-03-01 17:07:07,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1954 transitions. [2022-03-01 17:07:07,372 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1954 transitions. Word has length 21 [2022-03-01 17:07:07,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:07,372 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 1954 transitions. [2022-03-01 17:07:07,372 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) [2022-03-01 17:07:07,373 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1954 transitions. [2022-03-01 17:07:07,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:07,374 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:07,374 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] [2022-03-01 17:07:07,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-01 17:07:07,374 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:07,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:07,374 INFO L85 PathProgramCache]: Analyzing trace with hash -452479027, now seen corresponding path program 17 times [2022-03-01 17:07:07,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:07,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518516476] [2022-03-01 17:07:07,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:07,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:07,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:07,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518516476] [2022-03-01 17:07:07,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518516476] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:07,466 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:07,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:07,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818267109] [2022-03-01 17:07:07,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:07,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:07,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:07,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:07,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:07,467 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) [2022-03-01 17:07:07,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:07,560 INFO L93 Difference]: Finished difference Result 1241 states and 3972 transitions. [2022-03-01 17:07:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:07,561 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 [2022-03-01 17:07:07,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:07,563 INFO L225 Difference]: With dead ends: 1241 [2022-03-01 17:07:07,564 INFO L226 Difference]: Without dead ends: 1107 [2022-03-01 17:07:07,564 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 [2022-03-01 17:07:07,564 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 [2022-03-01 17:07:07,564 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] [2022-03-01 17:07:07,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-03-01 17:07:07,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 603. [2022-03-01 17:07:07,580 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) [2022-03-01 17:07:07,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 2025 transitions. [2022-03-01 17:07:07,581 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 2025 transitions. Word has length 21 [2022-03-01 17:07:07,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:07,581 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 2025 transitions. [2022-03-01 17:07:07,581 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) [2022-03-01 17:07:07,582 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 2025 transitions. [2022-03-01 17:07:07,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:07,583 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:07,583 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] [2022-03-01 17:07:07,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-01 17:07:07,583 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:07,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:07,583 INFO L85 PathProgramCache]: Analyzing trace with hash -364542293, now seen corresponding path program 18 times [2022-03-01 17:07:07,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:07,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060286872] [2022-03-01 17:07:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:07,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:07,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:07,677 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:07,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060286872] [2022-03-01 17:07:07,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060286872] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:07,677 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:07,677 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:07,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628735236] [2022-03-01 17:07:07,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:07,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:07,679 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:07,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:07,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:07,679 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) [2022-03-01 17:07:07,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:07,802 INFO L93 Difference]: Finished difference Result 1222 states and 3891 transitions. [2022-03-01 17:07:07,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:07,803 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 [2022-03-01 17:07:07,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:07,805 INFO L225 Difference]: With dead ends: 1222 [2022-03-01 17:07:07,806 INFO L226 Difference]: Without dead ends: 1071 [2022-03-01 17:07:07,806 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 [2022-03-01 17:07:07,806 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 [2022-03-01 17:07:07,806 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] [2022-03-01 17:07:07,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-03-01 17:07:07,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 567. [2022-03-01 17:07:07,817 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) [2022-03-01 17:07:07,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1924 transitions. [2022-03-01 17:07:07,819 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1924 transitions. Word has length 21 [2022-03-01 17:07:07,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:07,819 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 1924 transitions. [2022-03-01 17:07:07,819 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) [2022-03-01 17:07:07,819 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1924 transitions. [2022-03-01 17:07:07,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:07,820 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:07,820 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] [2022-03-01 17:07:07,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-01 17:07:07,821 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:07,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:07,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1884830541, now seen corresponding path program 19 times [2022-03-01 17:07:07,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:07,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356135696] [2022-03-01 17:07:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:07,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:07,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:07,901 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:07,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356135696] [2022-03-01 17:07:07,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356135696] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:07,901 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:07,901 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:07,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848207439] [2022-03-01 17:07:07,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:07,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:07,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:07,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:07,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:07,902 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) [2022-03-01 17:07:07,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:07,995 INFO L93 Difference]: Finished difference Result 1130 states and 3615 transitions. [2022-03-01 17:07:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:07,995 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 [2022-03-01 17:07:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:07,998 INFO L225 Difference]: With dead ends: 1130 [2022-03-01 17:07:07,998 INFO L226 Difference]: Without dead ends: 1027 [2022-03-01 17:07:07,998 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 [2022-03-01 17:07:07,999 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 [2022-03-01 17:07:07,999 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] [2022-03-01 17:07:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-03-01 17:07:08,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 585. [2022-03-01 17:07:08,010 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) [2022-03-01 17:07:08,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1981 transitions. [2022-03-01 17:07:08,011 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1981 transitions. Word has length 21 [2022-03-01 17:07:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:08,012 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 1981 transitions. [2022-03-01 17:07:08,012 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) [2022-03-01 17:07:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1981 transitions. [2022-03-01 17:07:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:08,013 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:08,013 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] [2022-03-01 17:07:08,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-01 17:07:08,013 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:08,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:08,013 INFO L85 PathProgramCache]: Analyzing trace with hash 951715149, now seen corresponding path program 20 times [2022-03-01 17:07:08,014 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:08,014 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964611330] [2022-03-01 17:07:08,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:08,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:08,090 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:08,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964611330] [2022-03-01 17:07:08,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964611330] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:08,090 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:08,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:08,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135063944] [2022-03-01 17:07:08,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:08,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:08,090 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:08,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:08,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:08,091 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) [2022-03-01 17:07:08,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:08,179 INFO L93 Difference]: Finished difference Result 1144 states and 3652 transitions. [2022-03-01 17:07:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:08,179 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 [2022-03-01 17:07:08,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:08,182 INFO L225 Difference]: With dead ends: 1144 [2022-03-01 17:07:08,182 INFO L226 Difference]: Without dead ends: 1015 [2022-03-01 17:07:08,182 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 [2022-03-01 17:07:08,182 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 [2022-03-01 17:07:08,183 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] [2022-03-01 17:07:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-03-01 17:07:08,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 573. [2022-03-01 17:07:08,193 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) [2022-03-01 17:07:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 1943 transitions. [2022-03-01 17:07:08,194 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 1943 transitions. Word has length 21 [2022-03-01 17:07:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:08,195 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 1943 transitions. [2022-03-01 17:07:08,195 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) [2022-03-01 17:07:08,195 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 1943 transitions. [2022-03-01 17:07:08,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:08,196 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:08,196 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] [2022-03-01 17:07:08,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-01 17:07:08,196 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:08,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:08,197 INFO L85 PathProgramCache]: Analyzing trace with hash -158506453, now seen corresponding path program 21 times [2022-03-01 17:07:08,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:08,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268302172] [2022-03-01 17:07:08,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:08,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:08,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:08,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:08,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268302172] [2022-03-01 17:07:08,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268302172] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:08,272 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:08,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:08,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057539501] [2022-03-01 17:07:08,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:08,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:08,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:08,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:08,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:08,273 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) [2022-03-01 17:07:08,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:08,377 INFO L93 Difference]: Finished difference Result 1128 states and 3604 transitions. [2022-03-01 17:07:08,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:08,377 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 [2022-03-01 17:07:08,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:08,380 INFO L225 Difference]: With dead ends: 1128 [2022-03-01 17:07:08,380 INFO L226 Difference]: Without dead ends: 1025 [2022-03-01 17:07:08,380 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 [2022-03-01 17:07:08,380 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 [2022-03-01 17:07:08,380 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] [2022-03-01 17:07:08,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2022-03-01 17:07:08,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 585. [2022-03-01 17:07:08,392 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) [2022-03-01 17:07:08,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1975 transitions. [2022-03-01 17:07:08,393 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1975 transitions. Word has length 21 [2022-03-01 17:07:08,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:08,393 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 1975 transitions. [2022-03-01 17:07:08,393 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) [2022-03-01 17:07:08,393 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1975 transitions. [2022-03-01 17:07:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:08,395 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:08,395 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] [2022-03-01 17:07:08,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-01 17:07:08,395 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:08,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:08,395 INFO L85 PathProgramCache]: Analyzing trace with hash 945284429, now seen corresponding path program 22 times [2022-03-01 17:07:08,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:08,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405837506] [2022-03-01 17:07:08,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:08,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:08,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:08,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405837506] [2022-03-01 17:07:08,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405837506] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:08,481 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:08,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:08,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198531707] [2022-03-01 17:07:08,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:08,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:08,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:08,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:08,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:08,482 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) [2022-03-01 17:07:08,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:08,572 INFO L93 Difference]: Finished difference Result 1140 states and 3636 transitions. [2022-03-01 17:07:08,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:08,573 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 [2022-03-01 17:07:08,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:08,575 INFO L225 Difference]: With dead ends: 1140 [2022-03-01 17:07:08,575 INFO L226 Difference]: Without dead ends: 1013 [2022-03-01 17:07:08,575 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 [2022-03-01 17:07:08,576 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 74 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-03-01 17:07:08,576 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] [2022-03-01 17:07:08,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-03-01 17:07:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 573. [2022-03-01 17:07:08,586 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) [2022-03-01 17:07:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 1937 transitions. [2022-03-01 17:07:08,587 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 1937 transitions. Word has length 21 [2022-03-01 17:07:08,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:08,587 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 1937 transitions. [2022-03-01 17:07:08,587 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) [2022-03-01 17:07:08,587 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 1937 transitions. [2022-03-01 17:07:08,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:08,588 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:08,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:07:08,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-01 17:07:08,589 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:08,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:08,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1746780339, now seen corresponding path program 23 times [2022-03-01 17:07:08,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:08,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305652678] [2022-03-01 17:07:08,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:08,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:08,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:08,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:08,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305652678] [2022-03-01 17:07:08,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305652678] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:08,665 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:08,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:08,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87282776] [2022-03-01 17:07:08,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:08,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:08,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:08,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:08,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:08,666 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) [2022-03-01 17:07:08,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:08,754 INFO L93 Difference]: Finished difference Result 1162 states and 3721 transitions. [2022-03-01 17:07:08,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:08,754 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 [2022-03-01 17:07:08,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:08,757 INFO L225 Difference]: With dead ends: 1162 [2022-03-01 17:07:08,757 INFO L226 Difference]: Without dead ends: 1045 [2022-03-01 17:07:08,757 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 [2022-03-01 17:07:08,757 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 77 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-03-01 17:07:08,758 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] [2022-03-01 17:07:08,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2022-03-01 17:07:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 591. [2022-03-01 17:07:08,769 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) [2022-03-01 17:07:08,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1988 transitions. [2022-03-01 17:07:08,780 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1988 transitions. Word has length 21 [2022-03-01 17:07:08,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:08,780 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 1988 transitions. [2022-03-01 17:07:08,781 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) [2022-03-01 17:07:08,781 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1988 transitions. [2022-03-01 17:07:08,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:08,782 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:08,782 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] [2022-03-01 17:07:08,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-01 17:07:08,782 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:08,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:08,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2075163221, now seen corresponding path program 24 times [2022-03-01 17:07:08,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:08,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497978089] [2022-03-01 17:07:08,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:08,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:08,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:08,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497978089] [2022-03-01 17:07:08,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497978089] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:08,860 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:08,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:08,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000079619] [2022-03-01 17:07:08,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:08,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:08,861 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:08,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:08,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:08,861 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) [2022-03-01 17:07:08,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:08,960 INFO L93 Difference]: Finished difference Result 1160 states and 3698 transitions. [2022-03-01 17:07:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:08,960 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 [2022-03-01 17:07:08,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:08,963 INFO L225 Difference]: With dead ends: 1160 [2022-03-01 17:07:08,963 INFO L226 Difference]: Without dead ends: 1010 [2022-03-01 17:07:08,963 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 [2022-03-01 17:07:08,964 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 [2022-03-01 17:07:08,964 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] [2022-03-01 17:07:08,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2022-03-01 17:07:08,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 556. [2022-03-01 17:07:08,975 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) [2022-03-01 17:07:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1902 transitions. [2022-03-01 17:07:08,976 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1902 transitions. Word has length 21 [2022-03-01 17:07:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:08,976 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1902 transitions. [2022-03-01 17:07:08,976 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) [2022-03-01 17:07:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1902 transitions. [2022-03-01 17:07:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:08,977 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:08,977 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] [2022-03-01 17:07:08,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-01 17:07:08,977 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:08,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:08,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1181393139, now seen corresponding path program 25 times [2022-03-01 17:07:08,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:08,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498109342] [2022-03-01 17:07:08,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:08,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:09,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:09,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:09,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498109342] [2022-03-01 17:07:09,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498109342] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:09,055 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:09,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:09,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103973812] [2022-03-01 17:07:09,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:09,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:09,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:09,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:09,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:09,055 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) [2022-03-01 17:07:09,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:09,149 INFO L93 Difference]: Finished difference Result 1242 states and 3976 transitions. [2022-03-01 17:07:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:09,150 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 [2022-03-01 17:07:09,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:09,153 INFO L225 Difference]: With dead ends: 1242 [2022-03-01 17:07:09,153 INFO L226 Difference]: Without dead ends: 1108 [2022-03-01 17:07:09,153 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 [2022-03-01 17:07:09,153 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 [2022-03-01 17:07:09,153 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] [2022-03-01 17:07:09,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-03-01 17:07:09,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 591. [2022-03-01 17:07:09,164 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) [2022-03-01 17:07:09,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1995 transitions. [2022-03-01 17:07:09,166 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1995 transitions. Word has length 21 [2022-03-01 17:07:09,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:09,166 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 1995 transitions. [2022-03-01 17:07:09,166 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) [2022-03-01 17:07:09,166 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1995 transitions. [2022-03-01 17:07:09,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:09,167 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:09,167 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] [2022-03-01 17:07:09,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-01 17:07:09,167 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:09,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:09,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1163318511, now seen corresponding path program 26 times [2022-03-01 17:07:09,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:09,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237605864] [2022-03-01 17:07:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:09,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:09,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:09,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:09,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237605864] [2022-03-01 17:07:09,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237605864] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:09,255 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:09,255 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:09,255 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669412497] [2022-03-01 17:07:09,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:09,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:09,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:09,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:09,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:09,256 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) [2022-03-01 17:07:09,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:09,344 INFO L93 Difference]: Finished difference Result 1225 states and 3899 transitions. [2022-03-01 17:07:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:09,345 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 [2022-03-01 17:07:09,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:09,348 INFO L225 Difference]: With dead ends: 1225 [2022-03-01 17:07:09,348 INFO L226 Difference]: Without dead ends: 1073 [2022-03-01 17:07:09,348 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 [2022-03-01 17:07:09,349 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 98 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-03-01 17:07:09,349 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] [2022-03-01 17:07:09,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-03-01 17:07:09,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 556. [2022-03-01 17:07:09,360 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) [2022-03-01 17:07:09,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1888 transitions. [2022-03-01 17:07:09,361 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1888 transitions. Word has length 21 [2022-03-01 17:07:09,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:09,361 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1888 transitions. [2022-03-01 17:07:09,361 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) [2022-03-01 17:07:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1888 transitions. [2022-03-01 17:07:09,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:09,362 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:09,362 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] [2022-03-01 17:07:09,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-01 17:07:09,362 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:09,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:09,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1016057387, now seen corresponding path program 27 times [2022-03-01 17:07:09,363 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:09,363 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965605678] [2022-03-01 17:07:09,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:09,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:09,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:09,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:09,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965605678] [2022-03-01 17:07:09,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965605678] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:09,453 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:09,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:09,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883649716] [2022-03-01 17:07:09,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:09,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:09,453 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:09,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:09,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:09,454 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) [2022-03-01 17:07:09,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:09,544 INFO L93 Difference]: Finished difference Result 1182 states and 3766 transitions. [2022-03-01 17:07:09,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:09,545 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 [2022-03-01 17:07:09,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:09,547 INFO L225 Difference]: With dead ends: 1182 [2022-03-01 17:07:09,548 INFO L226 Difference]: Without dead ends: 1079 [2022-03-01 17:07:09,548 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 [2022-03-01 17:07:09,548 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 [2022-03-01 17:07:09,548 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] [2022-03-01 17:07:09,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-03-01 17:07:09,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 576. [2022-03-01 17:07:09,559 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) [2022-03-01 17:07:09,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1948 transitions. [2022-03-01 17:07:09,561 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1948 transitions. Word has length 21 [2022-03-01 17:07:09,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:09,561 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 1948 transitions. [2022-03-01 17:07:09,561 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) [2022-03-01 17:07:09,561 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1948 transitions. [2022-03-01 17:07:09,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:09,562 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:09,562 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] [2022-03-01 17:07:09,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-01 17:07:09,562 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:09,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:09,562 INFO L85 PathProgramCache]: Analyzing trace with hash -849369587, now seen corresponding path program 28 times [2022-03-01 17:07:09,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:09,562 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325352438] [2022-03-01 17:07:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:09,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:09,653 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:09,653 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325352438] [2022-03-01 17:07:09,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325352438] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:09,653 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:09,653 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:09,653 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155655143] [2022-03-01 17:07:09,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:09,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:09,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:09,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:09,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:09,654 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) [2022-03-01 17:07:09,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:09,731 INFO L93 Difference]: Finished difference Result 1213 states and 3853 transitions. [2022-03-01 17:07:09,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:09,732 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 [2022-03-01 17:07:09,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:09,734 INFO L225 Difference]: With dead ends: 1213 [2022-03-01 17:07:09,735 INFO L226 Difference]: Without dead ends: 1059 [2022-03-01 17:07:09,735 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 [2022-03-01 17:07:09,735 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 [2022-03-01 17:07:09,735 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] [2022-03-01 17:07:09,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-03-01 17:07:09,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 556. [2022-03-01 17:07:09,745 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) [2022-03-01 17:07:09,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1878 transitions. [2022-03-01 17:07:09,747 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1878 transitions. Word has length 21 [2022-03-01 17:07:09,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:09,747 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1878 transitions. [2022-03-01 17:07:09,747 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) [2022-03-01 17:07:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1878 transitions. [2022-03-01 17:07:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:09,748 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:09,748 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] [2022-03-01 17:07:09,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-01 17:07:09,748 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:09,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:09,749 INFO L85 PathProgramCache]: Analyzing trace with hash -573877363, now seen corresponding path program 29 times [2022-03-01 17:07:09,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:09,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542764317] [2022-03-01 17:07:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:09,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:09,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:09,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:09,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542764317] [2022-03-01 17:07:09,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542764317] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:09,824 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:09,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:09,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641497659] [2022-03-01 17:07:09,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:09,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:09,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:09,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:09,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:09,825 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) [2022-03-01 17:07:09,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:09,910 INFO L93 Difference]: Finished difference Result 1157 states and 3678 transitions. [2022-03-01 17:07:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:09,910 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 [2022-03-01 17:07:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:09,913 INFO L225 Difference]: With dead ends: 1157 [2022-03-01 17:07:09,913 INFO L226 Difference]: Without dead ends: 1054 [2022-03-01 17:07:09,913 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 [2022-03-01 17:07:09,914 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 [2022-03-01 17:07:09,914 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] [2022-03-01 17:07:09,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2022-03-01 17:07:09,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 568. [2022-03-01 17:07:09,925 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) [2022-03-01 17:07:09,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1910 transitions. [2022-03-01 17:07:09,926 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1910 transitions. Word has length 21 [2022-03-01 17:07:09,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:09,926 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 1910 transitions. [2022-03-01 17:07:09,926 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) [2022-03-01 17:07:09,926 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1910 transitions. [2022-03-01 17:07:09,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:09,928 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:09,928 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] [2022-03-01 17:07:09,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-01 17:07:09,928 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:09,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:09,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1506992755, now seen corresponding path program 30 times [2022-03-01 17:07:09,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:09,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133596090] [2022-03-01 17:07:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:09,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:10,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:10,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133596090] [2022-03-01 17:07:10,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133596090] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:10,005 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:10,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:10,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171977002] [2022-03-01 17:07:10,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:10,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:10,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:10,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:10,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:10,006 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) [2022-03-01 17:07:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:10,101 INFO L93 Difference]: Finished difference Result 1171 states and 3715 transitions. [2022-03-01 17:07:10,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:10,102 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 [2022-03-01 17:07:10,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:10,104 INFO L225 Difference]: With dead ends: 1171 [2022-03-01 17:07:10,104 INFO L226 Difference]: Without dead ends: 1028 [2022-03-01 17:07:10,105 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 [2022-03-01 17:07:10,105 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 86 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-03-01 17:07:10,105 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] [2022-03-01 17:07:10,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2022-03-01 17:07:10,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 542. [2022-03-01 17:07:10,115 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) [2022-03-01 17:07:10,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1843 transitions. [2022-03-01 17:07:10,117 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1843 transitions. Word has length 21 [2022-03-01 17:07:10,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:10,117 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 1843 transitions. [2022-03-01 17:07:10,117 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) [2022-03-01 17:07:10,117 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1843 transitions. [2022-03-01 17:07:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:10,118 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:10,118 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] [2022-03-01 17:07:10,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-01 17:07:10,118 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:10,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:10,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1140268139, now seen corresponding path program 31 times [2022-03-01 17:07:10,118 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:10,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928157006] [2022-03-01 17:07:10,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:10,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:10,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:10,196 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:10,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928157006] [2022-03-01 17:07:10,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928157006] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:10,197 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:10,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:10,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207412730] [2022-03-01 17:07:10,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:10,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:10,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:10,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:10,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:10,197 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) [2022-03-01 17:07:10,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:10,282 INFO L93 Difference]: Finished difference Result 1207 states and 3850 transitions. [2022-03-01 17:07:10,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:10,282 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 [2022-03-01 17:07:10,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:10,285 INFO L225 Difference]: With dead ends: 1207 [2022-03-01 17:07:10,285 INFO L226 Difference]: Without dead ends: 1073 [2022-03-01 17:07:10,286 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 [2022-03-01 17:07:10,286 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 [2022-03-01 17:07:10,286 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] [2022-03-01 17:07:10,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-03-01 17:07:10,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 591. [2022-03-01 17:07:10,297 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) [2022-03-01 17:07:10,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1989 transitions. [2022-03-01 17:07:10,298 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1989 transitions. Word has length 21 [2022-03-01 17:07:10,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:10,298 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 1989 transitions. [2022-03-01 17:07:10,298 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) [2022-03-01 17:07:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1989 transitions. [2022-03-01 17:07:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:10,300 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:10,300 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] [2022-03-01 17:07:10,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-01 17:07:10,300 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:10,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash -809987507, now seen corresponding path program 32 times [2022-03-01 17:07:10,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:10,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672410529] [2022-03-01 17:07:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:10,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:10,377 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:10,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672410529] [2022-03-01 17:07:10,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672410529] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:10,377 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:10,377 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:10,377 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754874145] [2022-03-01 17:07:10,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:10,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:10,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:10,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:10,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:10,378 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) [2022-03-01 17:07:10,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:10,469 INFO L93 Difference]: Finished difference Result 1190 states and 3773 transitions. [2022-03-01 17:07:10,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:10,469 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 [2022-03-01 17:07:10,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:10,472 INFO L225 Difference]: With dead ends: 1190 [2022-03-01 17:07:10,472 INFO L226 Difference]: Without dead ends: 1038 [2022-03-01 17:07:10,472 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 [2022-03-01 17:07:10,473 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 83 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-03-01 17:07:10,473 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] [2022-03-01 17:07:10,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-03-01 17:07:10,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 556. [2022-03-01 17:07:10,493 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) [2022-03-01 17:07:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1882 transitions. [2022-03-01 17:07:10,495 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1882 transitions. Word has length 21 [2022-03-01 17:07:10,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:10,495 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1882 transitions. [2022-03-01 17:07:10,495 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) [2022-03-01 17:07:10,495 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1882 transitions. [2022-03-01 17:07:10,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:10,496 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:10,496 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] [2022-03-01 17:07:10,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-01 17:07:10,496 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:10,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:10,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1851976711, now seen corresponding path program 1 times [2022-03-01 17:07:10,497 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:10,497 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274711831] [2022-03-01 17:07:10,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:10,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:10,504 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:10,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274711831] [2022-03-01 17:07:10,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274711831] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:10,504 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:10,504 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:07:10,504 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48010445] [2022-03-01 17:07:10,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:10,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 17:07:10,504 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:10,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 17:07:10,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:07:10,505 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) [2022-03-01 17:07:10,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:10,512 INFO L93 Difference]: Finished difference Result 473 states and 1551 transitions. [2022-03-01 17:07:10,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 17:07:10,512 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 [2022-03-01 17:07:10,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:10,513 INFO L225 Difference]: With dead ends: 473 [2022-03-01 17:07:10,513 INFO L226 Difference]: Without dead ends: 473 [2022-03-01 17:07:10,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:07:10,514 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 [2022-03-01 17:07:10,514 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] [2022-03-01 17:07:10,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-03-01 17:07:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2022-03-01 17:07:10,520 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) [2022-03-01 17:07:10,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1551 transitions. [2022-03-01 17:07:10,521 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1551 transitions. Word has length 21 [2022-03-01 17:07:10,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:10,521 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 1551 transitions. [2022-03-01 17:07:10,521 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) [2022-03-01 17:07:10,521 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1551 transitions. [2022-03-01 17:07:10,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:10,522 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:10,522 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] [2022-03-01 17:07:10,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-01 17:07:10,522 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:10,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1742938129, now seen corresponding path program 33 times [2022-03-01 17:07:10,523 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:10,523 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115218666] [2022-03-01 17:07:10,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:10,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:10,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:10,598 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:10,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115218666] [2022-03-01 17:07:10,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115218666] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:10,598 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:10,598 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:10,598 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417671188] [2022-03-01 17:07:10,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:10,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:10,599 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:10,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:10,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:10,600 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) [2022-03-01 17:07:10,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:10,673 INFO L93 Difference]: Finished difference Result 940 states and 2857 transitions. [2022-03-01 17:07:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:10,673 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 [2022-03-01 17:07:10,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:10,675 INFO L225 Difference]: With dead ends: 940 [2022-03-01 17:07:10,675 INFO L226 Difference]: Without dead ends: 861 [2022-03-01 17:07:10,675 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 [2022-03-01 17:07:10,676 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 72 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-03-01 17:07:10,676 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] [2022-03-01 17:07:10,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-03-01 17:07:10,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 489. [2022-03-01 17:07:10,684 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) [2022-03-01 17:07:10,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1599 transitions. [2022-03-01 17:07:10,685 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1599 transitions. Word has length 21 [2022-03-01 17:07:10,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:10,685 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 1599 transitions. [2022-03-01 17:07:10,685 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) [2022-03-01 17:07:10,685 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1599 transitions. [2022-03-01 17:07:10,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:10,686 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:10,686 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] [2022-03-01 17:07:10,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-01 17:07:10,687 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:10,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:10,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1414555247, now seen corresponding path program 34 times [2022-03-01 17:07:10,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:10,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560311382] [2022-03-01 17:07:10,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:10,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:10,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:10,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:10,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560311382] [2022-03-01 17:07:10,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560311382] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:10,765 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:10,765 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:10,765 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582355913] [2022-03-01 17:07:10,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:10,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:10,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:10,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:10,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:10,766 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) [2022-03-01 17:07:10,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:10,829 INFO L93 Difference]: Finished difference Result 924 states and 2801 transitions. [2022-03-01 17:07:10,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:10,829 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 [2022-03-01 17:07:10,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:10,831 INFO L225 Difference]: With dead ends: 924 [2022-03-01 17:07:10,831 INFO L226 Difference]: Without dead ends: 798 [2022-03-01 17:07:10,831 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 [2022-03-01 17:07:10,832 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 [2022-03-01 17:07:10,832 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] [2022-03-01 17:07:10,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-03-01 17:07:10,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 473. [2022-03-01 17:07:10,840 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) [2022-03-01 17:07:10,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1543 transitions. [2022-03-01 17:07:10,840 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1543 transitions. Word has length 21 [2022-03-01 17:07:10,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:10,841 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 1543 transitions. [2022-03-01 17:07:10,841 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) [2022-03-01 17:07:10,841 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1543 transitions. [2022-03-01 17:07:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:10,842 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:10,842 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] [2022-03-01 17:07:10,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-01 17:07:10,842 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:10,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:10,842 INFO L85 PathProgramCache]: Analyzing trace with hash -300398865, now seen corresponding path program 35 times [2022-03-01 17:07:10,842 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:10,842 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234630465] [2022-03-01 17:07:10,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:10,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:10,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:10,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234630465] [2022-03-01 17:07:10,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234630465] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:10,925 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:10,925 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:10,925 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592051448] [2022-03-01 17:07:10,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:10,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:10,925 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:10,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:10,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:10,925 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) [2022-03-01 17:07:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:11,000 INFO L93 Difference]: Finished difference Result 915 states and 2771 transitions. [2022-03-01 17:07:11,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:11,000 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 [2022-03-01 17:07:11,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:11,002 INFO L225 Difference]: With dead ends: 915 [2022-03-01 17:07:11,002 INFO L226 Difference]: Without dead ends: 836 [2022-03-01 17:07:11,002 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 [2022-03-01 17:07:11,003 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 [2022-03-01 17:07:11,003 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] [2022-03-01 17:07:11,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-03-01 17:07:11,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 481. [2022-03-01 17:07:11,011 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) [2022-03-01 17:07:11,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 1563 transitions. [2022-03-01 17:07:11,012 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 1563 transitions. Word has length 21 [2022-03-01 17:07:11,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:11,012 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 1563 transitions. [2022-03-01 17:07:11,012 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) [2022-03-01 17:07:11,012 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 1563 transitions. [2022-03-01 17:07:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:11,013 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:11,013 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] [2022-03-01 17:07:11,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-01 17:07:11,014 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:11,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:11,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1791893777, now seen corresponding path program 36 times [2022-03-01 17:07:11,014 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:11,014 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731440323] [2022-03-01 17:07:11,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:11,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:11,089 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:11,089 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731440323] [2022-03-01 17:07:11,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731440323] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:11,089 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:11,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:11,089 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667863889] [2022-03-01 17:07:11,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:11,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:11,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:11,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:11,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:11,090 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) [2022-03-01 17:07:11,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:11,167 INFO L93 Difference]: Finished difference Result 899 states and 2715 transitions. [2022-03-01 17:07:11,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:11,167 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 [2022-03-01 17:07:11,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:11,169 INFO L225 Difference]: With dead ends: 899 [2022-03-01 17:07:11,169 INFO L226 Difference]: Without dead ends: 786 [2022-03-01 17:07:11,169 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 [2022-03-01 17:07:11,169 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 [2022-03-01 17:07:11,170 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] [2022-03-01 17:07:11,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-03-01 17:07:11,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 461. [2022-03-01 17:07:11,178 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) [2022-03-01 17:07:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 1513 transitions. [2022-03-01 17:07:11,179 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 1513 transitions. Word has length 21 [2022-03-01 17:07:11,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:11,179 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 1513 transitions. [2022-03-01 17:07:11,180 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) [2022-03-01 17:07:11,180 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 1513 transitions. [2022-03-01 17:07:11,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:11,180 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:11,181 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] [2022-03-01 17:07:11,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-01 17:07:11,181 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:11,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:11,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1558519343, now seen corresponding path program 37 times [2022-03-01 17:07:11,181 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:11,181 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971796621] [2022-03-01 17:07:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:11,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:11,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:11,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971796621] [2022-03-01 17:07:11,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971796621] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:11,293 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:11,293 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:11,293 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965790321] [2022-03-01 17:07:11,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:11,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:11,294 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:11,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:11,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:11,295 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) [2022-03-01 17:07:11,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:11,368 INFO L93 Difference]: Finished difference Result 927 states and 2839 transitions. [2022-03-01 17:07:11,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:11,369 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 [2022-03-01 17:07:11,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:11,375 INFO L225 Difference]: With dead ends: 927 [2022-03-01 17:07:11,375 INFO L226 Difference]: Without dead ends: 840 [2022-03-01 17:07:11,375 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 [2022-03-01 17:07:11,375 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 83 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:11,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 94 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:07:11,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-03-01 17:07:11,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 477. [2022-03-01 17:07:11,387 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) [2022-03-01 17:07:11,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 1565 transitions. [2022-03-01 17:07:11,389 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 1565 transitions. Word has length 21 [2022-03-01 17:07:11,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:11,389 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 1565 transitions. [2022-03-01 17:07:11,389 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) [2022-03-01 17:07:11,389 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 1565 transitions. [2022-03-01 17:07:11,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:11,390 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:11,390 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] [2022-03-01 17:07:11,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-01 17:07:11,390 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:11,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:11,390 INFO L85 PathProgramCache]: Analyzing trace with hash -777725515, now seen corresponding path program 38 times [2022-03-01 17:07:11,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:11,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164748913] [2022-03-01 17:07:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:11,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:11,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:11,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164748913] [2022-03-01 17:07:11,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164748913] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:11,480 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:11,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:11,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796552110] [2022-03-01 17:07:11,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:11,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:11,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:11,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:11,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:11,481 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) [2022-03-01 17:07:11,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:11,550 INFO L93 Difference]: Finished difference Result 919 states and 2803 transitions. [2022-03-01 17:07:11,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:11,551 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 [2022-03-01 17:07:11,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:11,553 INFO L225 Difference]: With dead ends: 919 [2022-03-01 17:07:11,553 INFO L226 Difference]: Without dead ends: 832 [2022-03-01 17:07:11,553 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 [2022-03-01 17:07:11,553 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 [2022-03-01 17:07:11,554 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] [2022-03-01 17:07:11,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-03-01 17:07:11,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 469. [2022-03-01 17:07:11,562 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) [2022-03-01 17:07:11,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1541 transitions. [2022-03-01 17:07:11,563 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1541 transitions. Word has length 21 [2022-03-01 17:07:11,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:11,563 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 1541 transitions. [2022-03-01 17:07:11,564 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) [2022-03-01 17:07:11,564 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1541 transitions. [2022-03-01 17:07:11,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:11,564 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:11,564 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] [2022-03-01 17:07:11,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-01 17:07:11,565 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:11,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:11,565 INFO L85 PathProgramCache]: Analyzing trace with hash -484817651, now seen corresponding path program 39 times [2022-03-01 17:07:11,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:11,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132080695] [2022-03-01 17:07:11,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:11,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:11,641 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:11,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132080695] [2022-03-01 17:07:11,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132080695] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:11,642 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:11,642 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:11,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386432481] [2022-03-01 17:07:11,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:11,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:11,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:11,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:11,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:11,642 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) [2022-03-01 17:07:11,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:11,718 INFO L93 Difference]: Finished difference Result 950 states and 2902 transitions. [2022-03-01 17:07:11,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:11,718 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 [2022-03-01 17:07:11,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:11,720 INFO L225 Difference]: With dead ends: 950 [2022-03-01 17:07:11,720 INFO L226 Difference]: Without dead ends: 863 [2022-03-01 17:07:11,720 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 [2022-03-01 17:07:11,721 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 [2022-03-01 17:07:11,721 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] [2022-03-01 17:07:11,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-03-01 17:07:11,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 489. [2022-03-01 17:07:11,729 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) [2022-03-01 17:07:11,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1601 transitions. [2022-03-01 17:07:11,730 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1601 transitions. Word has length 21 [2022-03-01 17:07:11,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:11,731 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 1601 transitions. [2022-03-01 17:07:11,731 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) [2022-03-01 17:07:11,732 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1601 transitions. [2022-03-01 17:07:11,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:11,732 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:11,732 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] [2022-03-01 17:07:11,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-01 17:07:11,733 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:11,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:11,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1760141457, now seen corresponding path program 40 times [2022-03-01 17:07:11,733 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:11,733 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702097518] [2022-03-01 17:07:11,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:11,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:11,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:11,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702097518] [2022-03-01 17:07:11,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702097518] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:11,816 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:11,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:11,816 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139858231] [2022-03-01 17:07:11,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:11,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:11,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:11,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:11,817 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) [2022-03-01 17:07:11,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:11,879 INFO L93 Difference]: Finished difference Result 973 states and 2957 transitions. [2022-03-01 17:07:11,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:11,879 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 [2022-03-01 17:07:11,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:11,882 INFO L225 Difference]: With dead ends: 973 [2022-03-01 17:07:11,882 INFO L226 Difference]: Without dead ends: 843 [2022-03-01 17:07:11,882 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 [2022-03-01 17:07:11,882 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 [2022-03-01 17:07:11,883 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] [2022-03-01 17:07:11,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-03-01 17:07:11,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 469. [2022-03-01 17:07:11,890 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) [2022-03-01 17:07:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1533 transitions. [2022-03-01 17:07:11,891 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1533 transitions. Word has length 21 [2022-03-01 17:07:11,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:11,891 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 1533 transitions. [2022-03-01 17:07:11,891 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) [2022-03-01 17:07:11,891 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1533 transitions. [2022-03-01 17:07:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:11,892 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:11,892 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] [2022-03-01 17:07:11,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-01 17:07:11,892 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:11,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:11,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1130865005, now seen corresponding path program 41 times [2022-03-01 17:07:11,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:11,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465573886] [2022-03-01 17:07:11,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:11,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:11,978 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:11,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465573886] [2022-03-01 17:07:11,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465573886] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:11,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:11,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:11,979 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202151255] [2022-03-01 17:07:11,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:11,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:11,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:11,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:11,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:11,979 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) [2022-03-01 17:07:12,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:12,045 INFO L93 Difference]: Finished difference Result 930 states and 2822 transitions. [2022-03-01 17:07:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:12,045 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 [2022-03-01 17:07:12,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:12,047 INFO L225 Difference]: With dead ends: 930 [2022-03-01 17:07:12,047 INFO L226 Difference]: Without dead ends: 851 [2022-03-01 17:07:12,047 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 [2022-03-01 17:07:12,048 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 [2022-03-01 17:07:12,048 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] [2022-03-01 17:07:12,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-03-01 17:07:12,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 485. [2022-03-01 17:07:12,055 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) [2022-03-01 17:07:12,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1581 transitions. [2022-03-01 17:07:12,056 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1581 transitions. Word has length 21 [2022-03-01 17:07:12,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:12,056 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 1581 transitions. [2022-03-01 17:07:12,056 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) [2022-03-01 17:07:12,056 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1581 transitions. [2022-03-01 17:07:12,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:12,057 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:12,057 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] [2022-03-01 17:07:12,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-01 17:07:12,057 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:12,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:12,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1574167541, now seen corresponding path program 42 times [2022-03-01 17:07:12,058 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:12,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021477710] [2022-03-01 17:07:12,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:12,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:12,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:12,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:12,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021477710] [2022-03-01 17:07:12,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021477710] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:12,134 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:12,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:12,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142515497] [2022-03-01 17:07:12,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:12,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:12,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:12,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:12,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:12,135 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) [2022-03-01 17:07:12,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:12,203 INFO L93 Difference]: Finished difference Result 914 states and 2766 transitions. [2022-03-01 17:07:12,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:12,204 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 [2022-03-01 17:07:12,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:12,205 INFO L225 Difference]: With dead ends: 914 [2022-03-01 17:07:12,205 INFO L226 Difference]: Without dead ends: 780 [2022-03-01 17:07:12,206 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 [2022-03-01 17:07:12,206 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:12,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 100 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:07:12,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-03-01 17:07:12,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 461. [2022-03-01 17:07:12,213 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) [2022-03-01 17:07:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 1509 transitions. [2022-03-01 17:07:12,214 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 1509 transitions. Word has length 21 [2022-03-01 17:07:12,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:12,214 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 1509 transitions. [2022-03-01 17:07:12,214 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) [2022-03-01 17:07:12,214 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 1509 transitions. [2022-03-01 17:07:12,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:12,215 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:12,215 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] [2022-03-01 17:07:12,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-01 17:07:12,215 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:12,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash 711722381, now seen corresponding path program 43 times [2022-03-01 17:07:12,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:12,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487699944] [2022-03-01 17:07:12,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:12,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:12,306 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:12,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487699944] [2022-03-01 17:07:12,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487699944] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:12,307 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:12,307 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:12,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147253128] [2022-03-01 17:07:12,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:12,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:12,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:12,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:12,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:12,307 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) [2022-03-01 17:07:12,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:12,383 INFO L93 Difference]: Finished difference Result 890 states and 2713 transitions. [2022-03-01 17:07:12,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:12,383 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 [2022-03-01 17:07:12,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:12,385 INFO L225 Difference]: With dead ends: 890 [2022-03-01 17:07:12,385 INFO L226 Difference]: Without dead ends: 803 [2022-03-01 17:07:12,385 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 [2022-03-01 17:07:12,386 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 71 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:12,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 105 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:07:12,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-03-01 17:07:12,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 473. [2022-03-01 17:07:12,394 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) [2022-03-01 17:07:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1545 transitions. [2022-03-01 17:07:12,395 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1545 transitions. Word has length 21 [2022-03-01 17:07:12,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:12,395 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 1545 transitions. [2022-03-01 17:07:12,395 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) [2022-03-01 17:07:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1545 transitions. [2022-03-01 17:07:12,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:12,396 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:12,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:07:12,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-01 17:07:12,396 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:12,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:12,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1624522477, now seen corresponding path program 44 times [2022-03-01 17:07:12,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:12,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398016172] [2022-03-01 17:07:12,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:12,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:12,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:12,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398016172] [2022-03-01 17:07:12,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398016172] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:12,473 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:12,473 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:12,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195122391] [2022-03-01 17:07:12,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:12,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:12,473 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:12,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:12,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:12,474 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) [2022-03-01 17:07:12,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:12,543 INFO L93 Difference]: Finished difference Result 882 states and 2677 transitions. [2022-03-01 17:07:12,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:12,543 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 [2022-03-01 17:07:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:12,545 INFO L225 Difference]: With dead ends: 882 [2022-03-01 17:07:12,545 INFO L226 Difference]: Without dead ends: 795 [2022-03-01 17:07:12,546 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 [2022-03-01 17:07:12,546 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 [2022-03-01 17:07:12,547 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] [2022-03-01 17:07:12,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-03-01 17:07:12,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 465. [2022-03-01 17:07:12,554 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) [2022-03-01 17:07:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1521 transitions. [2022-03-01 17:07:12,555 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1521 transitions. Word has length 21 [2022-03-01 17:07:12,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:12,555 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 1521 transitions. [2022-03-01 17:07:12,555 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) [2022-03-01 17:07:12,555 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1521 transitions. [2022-03-01 17:07:12,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:12,556 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:12,556 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] [2022-03-01 17:07:12,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-01 17:07:12,556 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:12,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1904188813, now seen corresponding path program 45 times [2022-03-01 17:07:12,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:12,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692068458] [2022-03-01 17:07:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:12,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:12,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:12,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:12,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692068458] [2022-03-01 17:07:12,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692068458] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:12,642 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:12,642 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:12,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968704253] [2022-03-01 17:07:12,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:12,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:12,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:12,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:12,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:12,643 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) [2022-03-01 17:07:12,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:12,714 INFO L93 Difference]: Finished difference Result 896 states and 2726 transitions. [2022-03-01 17:07:12,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:12,714 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 [2022-03-01 17:07:12,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:12,715 INFO L225 Difference]: With dead ends: 896 [2022-03-01 17:07:12,716 INFO L226 Difference]: Without dead ends: 809 [2022-03-01 17:07:12,716 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 [2022-03-01 17:07:12,716 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 [2022-03-01 17:07:12,716 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] [2022-03-01 17:07:12,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-03-01 17:07:12,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 477. [2022-03-01 17:07:12,723 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) [2022-03-01 17:07:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 1553 transitions. [2022-03-01 17:07:12,724 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 1553 transitions. Word has length 21 [2022-03-01 17:07:12,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:12,724 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 1553 transitions. [2022-03-01 17:07:12,724 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) [2022-03-01 17:07:12,725 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 1553 transitions. [2022-03-01 17:07:12,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:12,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:12,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:07:12,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-01 17:07:12,726 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:12,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:12,726 INFO L85 PathProgramCache]: Analyzing trace with hash -28758161, now seen corresponding path program 46 times [2022-03-01 17:07:12,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:12,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326955418] [2022-03-01 17:07:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:12,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:12,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:12,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326955418] [2022-03-01 17:07:12,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326955418] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:12,805 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:12,805 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:12,805 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643330574] [2022-03-01 17:07:12,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:12,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:12,805 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:12,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:12,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:12,805 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) [2022-03-01 17:07:12,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:12,874 INFO L93 Difference]: Finished difference Result 902 states and 2731 transitions. [2022-03-01 17:07:12,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:12,875 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 [2022-03-01 17:07:12,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:12,876 INFO L225 Difference]: With dead ends: 902 [2022-03-01 17:07:12,876 INFO L226 Difference]: Without dead ends: 797 [2022-03-01 17:07:12,876 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 [2022-03-01 17:07:12,877 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, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:12,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 101 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:07:12,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-03-01 17:07:12,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 465. [2022-03-01 17:07:12,884 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) [2022-03-01 17:07:12,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1517 transitions. [2022-03-01 17:07:12,885 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1517 transitions. Word has length 21 [2022-03-01 17:07:12,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:12,885 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 1517 transitions. [2022-03-01 17:07:12,885 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) [2022-03-01 17:07:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1517 transitions. [2022-03-01 17:07:12,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:12,886 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:12,886 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] [2022-03-01 17:07:12,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-01 17:07:12,886 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:12,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:12,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1258141459, now seen corresponding path program 47 times [2022-03-01 17:07:12,886 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:12,886 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626476747] [2022-03-01 17:07:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:12,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:12,970 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:12,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626476747] [2022-03-01 17:07:12,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626476747] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:12,970 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:12,970 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:12,970 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854584420] [2022-03-01 17:07:12,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:12,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:12,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:12,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:12,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:12,971 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) [2022-03-01 17:07:13,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:13,035 INFO L93 Difference]: Finished difference Result 876 states and 2650 transitions. [2022-03-01 17:07:13,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:13,035 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 [2022-03-01 17:07:13,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:13,036 INFO L225 Difference]: With dead ends: 876 [2022-03-01 17:07:13,037 INFO L226 Difference]: Without dead ends: 797 [2022-03-01 17:07:13,037 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 [2022-03-01 17:07:13,037 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 [2022-03-01 17:07:13,037 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] [2022-03-01 17:07:13,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-03-01 17:07:13,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 473. [2022-03-01 17:07:13,044 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) [2022-03-01 17:07:13,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1537 transitions. [2022-03-01 17:07:13,045 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1537 transitions. Word has length 21 [2022-03-01 17:07:13,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:13,045 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 1537 transitions. [2022-03-01 17:07:13,045 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) [2022-03-01 17:07:13,045 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1537 transitions. [2022-03-01 17:07:13,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:13,046 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:13,046 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] [2022-03-01 17:07:13,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-01 17:07:13,046 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:13,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:13,047 INFO L85 PathProgramCache]: Analyzing trace with hash -310787083, now seen corresponding path program 48 times [2022-03-01 17:07:13,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:13,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104434660] [2022-03-01 17:07:13,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:13,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:13,121 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:13,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104434660] [2022-03-01 17:07:13,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104434660] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:13,121 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:13,122 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:13,122 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345561811] [2022-03-01 17:07:13,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:13,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:13,122 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:13,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:13,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:13,122 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) [2022-03-01 17:07:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:13,193 INFO L93 Difference]: Finished difference Result 860 states and 2594 transitions. [2022-03-01 17:07:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:13,193 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 [2022-03-01 17:07:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:13,195 INFO L225 Difference]: With dead ends: 860 [2022-03-01 17:07:13,195 INFO L226 Difference]: Without dead ends: 749 [2022-03-01 17:07:13,195 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 [2022-03-01 17:07:13,195 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 [2022-03-01 17:07:13,196 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] [2022-03-01 17:07:13,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-03-01 17:07:13,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 455. [2022-03-01 17:07:13,202 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) [2022-03-01 17:07:13,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 1497 transitions. [2022-03-01 17:07:13,203 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 1497 transitions. Word has length 21 [2022-03-01 17:07:13,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:13,203 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 1497 transitions. [2022-03-01 17:07:13,203 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) [2022-03-01 17:07:13,203 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1497 transitions. [2022-03-01 17:07:13,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:13,204 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:13,204 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] [2022-03-01 17:07:13,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-01 17:07:13,204 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:13,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:13,205 INFO L85 PathProgramCache]: Analyzing trace with hash 249500617, now seen corresponding path program 49 times [2022-03-01 17:07:13,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:13,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635358750] [2022-03-01 17:07:13,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:13,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:13,296 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:13,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635358750] [2022-03-01 17:07:13,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635358750] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:13,296 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:13,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:13,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688300743] [2022-03-01 17:07:13,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:13,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:13,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:13,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:13,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:13,297 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) [2022-03-01 17:07:13,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:13,386 INFO L93 Difference]: Finished difference Result 982 states and 2989 transitions. [2022-03-01 17:07:13,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:13,386 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 [2022-03-01 17:07:13,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:13,388 INFO L225 Difference]: With dead ends: 982 [2022-03-01 17:07:13,388 INFO L226 Difference]: Without dead ends: 872 [2022-03-01 17:07:13,388 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 [2022-03-01 17:07:13,388 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:13,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 94 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:07:13,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-03-01 17:07:13,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 486. [2022-03-01 17:07:13,396 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) [2022-03-01 17:07:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1576 transitions. [2022-03-01 17:07:13,397 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1576 transitions. Word has length 21 [2022-03-01 17:07:13,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:13,397 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 1576 transitions. [2022-03-01 17:07:13,397 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) [2022-03-01 17:07:13,397 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1576 transitions. [2022-03-01 17:07:13,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:13,398 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:13,398 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] [2022-03-01 17:07:13,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-01 17:07:13,398 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:13,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1700755029, now seen corresponding path program 50 times [2022-03-01 17:07:13,399 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:13,399 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405406111] [2022-03-01 17:07:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:13,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:13,476 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:13,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405406111] [2022-03-01 17:07:13,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405406111] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:13,476 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:13,476 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:13,476 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166785771] [2022-03-01 17:07:13,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:13,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:13,476 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:13,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:13,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:13,477 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) [2022-03-01 17:07:13,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:13,553 INFO L93 Difference]: Finished difference Result 965 states and 2916 transitions. [2022-03-01 17:07:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:13,554 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 [2022-03-01 17:07:13,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:13,555 INFO L225 Difference]: With dead ends: 965 [2022-03-01 17:07:13,555 INFO L226 Difference]: Without dead ends: 841 [2022-03-01 17:07:13,555 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 [2022-03-01 17:07:13,556 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 68 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-03-01 17:07:13,556 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] [2022-03-01 17:07:13,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-03-01 17:07:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 455. [2022-03-01 17:07:13,562 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) [2022-03-01 17:07:13,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 1485 transitions. [2022-03-01 17:07:13,563 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 1485 transitions. Word has length 21 [2022-03-01 17:07:13,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:13,563 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 1485 transitions. [2022-03-01 17:07:13,563 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) [2022-03-01 17:07:13,564 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1485 transitions. [2022-03-01 17:07:13,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:13,564 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:13,564 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] [2022-03-01 17:07:13,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-01 17:07:13,564 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:13,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:13,565 INFO L85 PathProgramCache]: Analyzing trace with hash 852170607, now seen corresponding path program 51 times [2022-03-01 17:07:13,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:13,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110432794] [2022-03-01 17:07:13,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:13,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:13,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:13,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110432794] [2022-03-01 17:07:13,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110432794] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:13,636 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:13,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:13,636 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480728312] [2022-03-01 17:07:13,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:13,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:13,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:13,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:13,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:13,637 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) [2022-03-01 17:07:13,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:13,695 INFO L93 Difference]: Finished difference Result 922 states and 2791 transitions. [2022-03-01 17:07:13,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:13,696 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 [2022-03-01 17:07:13,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:13,697 INFO L225 Difference]: With dead ends: 922 [2022-03-01 17:07:13,697 INFO L226 Difference]: Without dead ends: 843 [2022-03-01 17:07:13,698 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 [2022-03-01 17:07:13,698 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 [2022-03-01 17:07:13,698 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] [2022-03-01 17:07:13,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-03-01 17:07:13,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 471. [2022-03-01 17:07:13,705 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) [2022-03-01 17:07:13,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 1533 transitions. [2022-03-01 17:07:13,706 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 1533 transitions. Word has length 21 [2022-03-01 17:07:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:13,706 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 1533 transitions. [2022-03-01 17:07:13,706 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) [2022-03-01 17:07:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 1533 transitions. [2022-03-01 17:07:13,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:13,707 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:13,707 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] [2022-03-01 17:07:13,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-01 17:07:13,707 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:13,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:13,708 INFO L85 PathProgramCache]: Analyzing trace with hash 523787725, now seen corresponding path program 52 times [2022-03-01 17:07:13,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:13,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100765943] [2022-03-01 17:07:13,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:13,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:13,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:13,784 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:13,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100765943] [2022-03-01 17:07:13,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100765943] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:13,785 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:13,785 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:13,785 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94373188] [2022-03-01 17:07:13,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:13,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:13,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:13,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:13,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:13,786 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) [2022-03-01 17:07:13,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:13,854 INFO L93 Difference]: Finished difference Result 953 states and 2878 transitions. [2022-03-01 17:07:13,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:13,854 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 [2022-03-01 17:07:13,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:13,856 INFO L225 Difference]: With dead ends: 953 [2022-03-01 17:07:13,856 INFO L226 Difference]: Without dead ends: 827 [2022-03-01 17:07:13,857 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 [2022-03-01 17:07:13,857 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 [2022-03-01 17:07:13,857 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] [2022-03-01 17:07:13,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-03-01 17:07:13,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 455. [2022-03-01 17:07:13,864 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) [2022-03-01 17:07:13,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 1477 transitions. [2022-03-01 17:07:13,865 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 1477 transitions. Word has length 21 [2022-03-01 17:07:13,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:13,866 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 1477 transitions. [2022-03-01 17:07:13,866 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) [2022-03-01 17:07:13,866 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1477 transitions. [2022-03-01 17:07:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:13,866 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:13,867 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] [2022-03-01 17:07:13,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-01 17:07:13,867 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:13,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:13,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1191166387, now seen corresponding path program 53 times [2022-03-01 17:07:13,867 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:13,867 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862117035] [2022-03-01 17:07:13,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:13,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:13,957 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:13,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862117035] [2022-03-01 17:07:13,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862117035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:13,957 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:13,957 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:13,957 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523439239] [2022-03-01 17:07:13,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:13,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:13,957 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:13,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:13,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:13,958 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) [2022-03-01 17:07:14,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:14,026 INFO L93 Difference]: Finished difference Result 897 states and 2705 transitions. [2022-03-01 17:07:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:14,026 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 [2022-03-01 17:07:14,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:14,028 INFO L225 Difference]: With dead ends: 897 [2022-03-01 17:07:14,028 INFO L226 Difference]: Without dead ends: 818 [2022-03-01 17:07:14,028 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 [2022-03-01 17:07:14,028 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:14,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 94 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:07:14,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-03-01 17:07:14,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 463. [2022-03-01 17:07:14,035 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) [2022-03-01 17:07:14,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1497 transitions. [2022-03-01 17:07:14,036 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1497 transitions. Word has length 21 [2022-03-01 17:07:14,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:14,036 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 1497 transitions. [2022-03-01 17:07:14,037 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) [2022-03-01 17:07:14,037 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1497 transitions. [2022-03-01 17:07:14,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:14,037 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:14,037 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] [2022-03-01 17:07:14,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-01 17:07:14,038 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:14,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:14,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1612305997, now seen corresponding path program 54 times [2022-03-01 17:07:14,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:14,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367306412] [2022-03-01 17:07:14,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:14,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:14,133 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:14,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367306412] [2022-03-01 17:07:14,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367306412] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:14,133 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:14,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:14,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837852612] [2022-03-01 17:07:14,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:14,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:14,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:14,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:14,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:14,134 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) [2022-03-01 17:07:14,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:14,209 INFO L93 Difference]: Finished difference Result 911 states and 2742 transitions. [2022-03-01 17:07:14,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:14,211 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 [2022-03-01 17:07:14,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:14,213 INFO L225 Difference]: With dead ends: 911 [2022-03-01 17:07:14,213 INFO L226 Difference]: Without dead ends: 798 [2022-03-01 17:07:14,213 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 [2022-03-01 17:07:14,213 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, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:14,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 99 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:07:14,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-03-01 17:07:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 443. [2022-03-01 17:07:14,220 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) [2022-03-01 17:07:14,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1447 transitions. [2022-03-01 17:07:14,221 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1447 transitions. Word has length 21 [2022-03-01 17:07:14,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:14,221 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 1447 transitions. [2022-03-01 17:07:14,221 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) [2022-03-01 17:07:14,221 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1447 transitions. [2022-03-01 17:07:14,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:14,222 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:14,222 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] [2022-03-01 17:07:14,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-01 17:07:14,222 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:14,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:14,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1342133931, now seen corresponding path program 55 times [2022-03-01 17:07:14,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:14,223 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67240786] [2022-03-01 17:07:14,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:14,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:14,307 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:14,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67240786] [2022-03-01 17:07:14,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67240786] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:14,307 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:14,307 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:14,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145643240] [2022-03-01 17:07:14,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:14,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:14,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:14,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:14,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:14,308 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) [2022-03-01 17:07:14,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:14,375 INFO L93 Difference]: Finished difference Result 963 states and 2923 transitions. [2022-03-01 17:07:14,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:14,383 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 [2022-03-01 17:07:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:14,384 INFO L225 Difference]: With dead ends: 963 [2022-03-01 17:07:14,384 INFO L226 Difference]: Without dead ends: 853 [2022-03-01 17:07:14,385 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 [2022-03-01 17:07:14,385 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 [2022-03-01 17:07:14,385 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] [2022-03-01 17:07:14,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-03-01 17:07:14,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 443. [2022-03-01 17:07:14,391 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) [2022-03-01 17:07:14,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1424 transitions. [2022-03-01 17:07:14,392 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1424 transitions. Word has length 21 [2022-03-01 17:07:14,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:14,392 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 1424 transitions. [2022-03-01 17:07:14,392 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) [2022-03-01 17:07:14,392 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1424 transitions. [2022-03-01 17:07:14,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:14,393 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:14,393 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] [2022-03-01 17:07:14,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-03-01 17:07:14,393 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:14,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:14,394 INFO L85 PathProgramCache]: Analyzing trace with hash -608121715, now seen corresponding path program 56 times [2022-03-01 17:07:14,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:14,394 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113632399] [2022-03-01 17:07:14,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:14,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:14,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:14,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113632399] [2022-03-01 17:07:14,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113632399] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:14,469 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:14,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:14,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412566399] [2022-03-01 17:07:14,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:14,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:14,470 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:14,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:14,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:14,470 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) [2022-03-01 17:07:14,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:14,543 INFO L93 Difference]: Finished difference Result 946 states and 2850 transitions. [2022-03-01 17:07:14,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:14,544 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 [2022-03-01 17:07:14,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:14,545 INFO L225 Difference]: With dead ends: 946 [2022-03-01 17:07:14,545 INFO L226 Difference]: Without dead ends: 822 [2022-03-01 17:07:14,546 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 [2022-03-01 17:07:14,546 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 [2022-03-01 17:07:14,546 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] [2022-03-01 17:07:14,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-03-01 17:07:14,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 412. [2022-03-01 17:07:14,553 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) [2022-03-01 17:07:14,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1330 transitions. [2022-03-01 17:07:14,554 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1330 transitions. Word has length 21 [2022-03-01 17:07:14,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:14,554 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 1330 transitions. [2022-03-01 17:07:14,554 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) [2022-03-01 17:07:14,554 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1330 transitions. [2022-03-01 17:07:14,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:14,554 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:14,555 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] [2022-03-01 17:07:14,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-01 17:07:14,555 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:14,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:14,555 INFO L85 PathProgramCache]: Analyzing trace with hash 933914859, now seen corresponding path program 57 times [2022-03-01 17:07:14,555 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:14,555 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772407899] [2022-03-01 17:07:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:14,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:14,634 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:14,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772407899] [2022-03-01 17:07:14,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772407899] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:14,634 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:14,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:14,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037313347] [2022-03-01 17:07:14,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:14,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:14,634 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:14,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:14,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:14,635 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) [2022-03-01 17:07:14,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:14,708 INFO L93 Difference]: Finished difference Result 905 states and 2737 transitions. [2022-03-01 17:07:14,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:14,708 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 [2022-03-01 17:07:14,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:14,710 INFO L225 Difference]: With dead ends: 905 [2022-03-01 17:07:14,710 INFO L226 Difference]: Without dead ends: 795 [2022-03-01 17:07:14,710 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 [2022-03-01 17:07:14,710 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 [2022-03-01 17:07:14,710 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] [2022-03-01 17:07:14,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-03-01 17:07:14,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 434. [2022-03-01 17:07:14,717 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) [2022-03-01 17:07:14,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1387 transitions. [2022-03-01 17:07:14,718 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1387 transitions. Word has length 21 [2022-03-01 17:07:14,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:14,718 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1387 transitions. [2022-03-01 17:07:14,718 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) [2022-03-01 17:07:14,718 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1387 transitions. [2022-03-01 17:07:14,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:14,718 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:14,719 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] [2022-03-01 17:07:14,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-01 17:07:14,719 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:14,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:14,719 INFO L85 PathProgramCache]: Analyzing trace with hash -84029205, now seen corresponding path program 58 times [2022-03-01 17:07:14,719 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:14,719 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332726320] [2022-03-01 17:07:14,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:14,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:14,796 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:14,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332726320] [2022-03-01 17:07:14,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332726320] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:14,796 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:14,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:14,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9355494] [2022-03-01 17:07:14,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:14,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:14,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:14,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:14,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:14,797 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) [2022-03-01 17:07:14,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:14,872 INFO L93 Difference]: Finished difference Result 822 states and 2499 transitions. [2022-03-01 17:07:14,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:14,873 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 [2022-03-01 17:07:14,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:14,874 INFO L225 Difference]: With dead ends: 822 [2022-03-01 17:07:14,874 INFO L226 Difference]: Without dead ends: 709 [2022-03-01 17:07:14,874 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 [2022-03-01 17:07:14,875 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 [2022-03-01 17:07:14,875 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] [2022-03-01 17:07:14,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-03-01 17:07:14,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 412. [2022-03-01 17:07:14,881 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) [2022-03-01 17:07:14,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1319 transitions. [2022-03-01 17:07:14,882 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1319 transitions. Word has length 21 [2022-03-01 17:07:14,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:14,882 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 1319 transitions. [2022-03-01 17:07:14,882 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) [2022-03-01 17:07:14,882 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1319 transitions. [2022-03-01 17:07:14,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:14,883 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:14,883 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] [2022-03-01 17:07:14,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-01 17:07:14,883 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:14,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:14,884 INFO L85 PathProgramCache]: Analyzing trace with hash -995334579, now seen corresponding path program 59 times [2022-03-01 17:07:14,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:14,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872288073] [2022-03-01 17:07:14,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:14,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:14,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:14,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:14,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872288073] [2022-03-01 17:07:14,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872288073] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:14,963 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:14,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:14,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116409870] [2022-03-01 17:07:14,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:14,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:14,964 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:14,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:14,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:14,964 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) [2022-03-01 17:07:15,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:15,044 INFO L93 Difference]: Finished difference Result 880 states and 2648 transitions. [2022-03-01 17:07:15,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:15,045 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 [2022-03-01 17:07:15,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:15,046 INFO L225 Difference]: With dead ends: 880 [2022-03-01 17:07:15,046 INFO L226 Difference]: Without dead ends: 787 [2022-03-01 17:07:15,046 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 [2022-03-01 17:07:15,047 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 69 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-03-01 17:07:15,047 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] [2022-03-01 17:07:15,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-03-01 17:07:15,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 426. [2022-03-01 17:07:15,053 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) [2022-03-01 17:07:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1356 transitions. [2022-03-01 17:07:15,054 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1356 transitions. Word has length 21 [2022-03-01 17:07:15,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:15,054 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 1356 transitions. [2022-03-01 17:07:15,054 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) [2022-03-01 17:07:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1356 transitions. [2022-03-01 17:07:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:15,055 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:15,055 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] [2022-03-01 17:07:15,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-01 17:07:15,055 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:15,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:15,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1323717461, now seen corresponding path program 60 times [2022-03-01 17:07:15,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:15,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875349218] [2022-03-01 17:07:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:15,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:15,137 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:15,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875349218] [2022-03-01 17:07:15,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875349218] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:15,137 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:15,137 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:15,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031128475] [2022-03-01 17:07:15,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:15,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:15,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:15,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:15,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:15,141 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) [2022-03-01 17:07:15,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:15,217 INFO L93 Difference]: Finished difference Result 814 states and 2468 transitions. [2022-03-01 17:07:15,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:15,217 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 [2022-03-01 17:07:15,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:15,219 INFO L225 Difference]: With dead ends: 814 [2022-03-01 17:07:15,219 INFO L226 Difference]: Without dead ends: 690 [2022-03-01 17:07:15,219 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 [2022-03-01 17:07:15,219 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:15,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 93 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:07:15,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-03-01 17:07:15,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 393. [2022-03-01 17:07:15,227 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) [2022-03-01 17:07:15,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1272 transitions. [2022-03-01 17:07:15,228 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1272 transitions. Word has length 21 [2022-03-01 17:07:15,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:15,228 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 1272 transitions. [2022-03-01 17:07:15,228 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) [2022-03-01 17:07:15,228 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1272 transitions. [2022-03-01 17:07:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:15,229 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:15,229 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] [2022-03-01 17:07:15,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-01 17:07:15,229 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:15,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:15,229 INFO L85 PathProgramCache]: Analyzing trace with hash 853574447, now seen corresponding path program 61 times [2022-03-01 17:07:15,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:15,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230904729] [2022-03-01 17:07:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:15,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:15,315 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:15,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230904729] [2022-03-01 17:07:15,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230904729] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:15,315 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:15,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:15,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911634646] [2022-03-01 17:07:15,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:15,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:15,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:15,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:15,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:15,316 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) [2022-03-01 17:07:15,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:15,386 INFO L93 Difference]: Finished difference Result 825 states and 2485 transitions. [2022-03-01 17:07:15,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:15,387 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 [2022-03-01 17:07:15,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:15,388 INFO L225 Difference]: With dead ends: 825 [2022-03-01 17:07:15,388 INFO L226 Difference]: Without dead ends: 746 [2022-03-01 17:07:15,388 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 [2022-03-01 17:07:15,388 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 69 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-03-01 17:07:15,389 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] [2022-03-01 17:07:15,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-03-01 17:07:15,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 417. [2022-03-01 17:07:15,395 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) [2022-03-01 17:07:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1352 transitions. [2022-03-01 17:07:15,396 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 1352 transitions. Word has length 21 [2022-03-01 17:07:15,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:15,396 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 1352 transitions. [2022-03-01 17:07:15,396 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) [2022-03-01 17:07:15,396 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 1352 transitions. [2022-03-01 17:07:15,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:15,403 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:15,404 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] [2022-03-01 17:07:15,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-03-01 17:07:15,404 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:15,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:15,404 INFO L85 PathProgramCache]: Analyzing trace with hash 525191565, now seen corresponding path program 62 times [2022-03-01 17:07:15,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:15,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805866872] [2022-03-01 17:07:15,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:15,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:15,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:15,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805866872] [2022-03-01 17:07:15,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805866872] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:15,480 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:15,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:15,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578352591] [2022-03-01 17:07:15,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:15,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:15,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:15,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:15,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:15,481 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) [2022-03-01 17:07:15,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:15,546 INFO L93 Difference]: Finished difference Result 856 states and 2572 transitions. [2022-03-01 17:07:15,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:15,546 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 [2022-03-01 17:07:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:15,547 INFO L225 Difference]: With dead ends: 856 [2022-03-01 17:07:15,547 INFO L226 Difference]: Without dead ends: 730 [2022-03-01 17:07:15,548 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 [2022-03-01 17:07:15,548 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 [2022-03-01 17:07:15,548 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] [2022-03-01 17:07:15,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-03-01 17:07:15,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 401. [2022-03-01 17:07:15,554 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) [2022-03-01 17:07:15,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1296 transitions. [2022-03-01 17:07:15,555 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1296 transitions. Word has length 21 [2022-03-01 17:07:15,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:15,555 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 1296 transitions. [2022-03-01 17:07:15,555 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) [2022-03-01 17:07:15,555 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1296 transitions. [2022-03-01 17:07:15,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:15,556 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:15,556 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] [2022-03-01 17:07:15,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-01 17:07:15,556 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:15,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:15,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2046040879, now seen corresponding path program 63 times [2022-03-01 17:07:15,557 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:15,557 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488329456] [2022-03-01 17:07:15,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:15,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:15,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:15,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488329456] [2022-03-01 17:07:15,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488329456] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:15,648 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:15,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:15,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066916127] [2022-03-01 17:07:15,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:15,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:15,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:15,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:15,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:15,648 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) [2022-03-01 17:07:15,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:15,710 INFO L93 Difference]: Finished difference Result 829 states and 2489 transitions. [2022-03-01 17:07:15,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:15,711 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 [2022-03-01 17:07:15,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:15,712 INFO L225 Difference]: With dead ends: 829 [2022-03-01 17:07:15,712 INFO L226 Difference]: Without dead ends: 750 [2022-03-01 17:07:15,712 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 [2022-03-01 17:07:15,712 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 [2022-03-01 17:07:15,713 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] [2022-03-01 17:07:15,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-03-01 17:07:15,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 409. [2022-03-01 17:07:15,719 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) [2022-03-01 17:07:15,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1316 transitions. [2022-03-01 17:07:15,719 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1316 transitions. Word has length 21 [2022-03-01 17:07:15,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:15,720 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 1316 transitions. [2022-03-01 17:07:15,720 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) [2022-03-01 17:07:15,720 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1316 transitions. [2022-03-01 17:07:15,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:15,720 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:15,720 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] [2022-03-01 17:07:15,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-01 17:07:15,721 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:15,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:15,721 INFO L85 PathProgramCache]: Analyzing trace with hash 991871791, now seen corresponding path program 64 times [2022-03-01 17:07:15,721 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:15,721 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4401262] [2022-03-01 17:07:15,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:15,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:15,806 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:15,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4401262] [2022-03-01 17:07:15,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4401262] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:15,806 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:15,806 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:15,806 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046804858] [2022-03-01 17:07:15,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:15,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:15,806 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:15,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:15,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:15,807 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) [2022-03-01 17:07:15,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:15,877 INFO L93 Difference]: Finished difference Result 777 states and 2360 transitions. [2022-03-01 17:07:15,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:15,878 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 [2022-03-01 17:07:15,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:15,879 INFO L225 Difference]: With dead ends: 777 [2022-03-01 17:07:15,879 INFO L226 Difference]: Without dead ends: 678 [2022-03-01 17:07:15,879 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 [2022-03-01 17:07:15,880 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 [2022-03-01 17:07:15,880 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] [2022-03-01 17:07:15,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-03-01 17:07:15,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 401. [2022-03-01 17:07:15,886 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) [2022-03-01 17:07:15,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1292 transitions. [2022-03-01 17:07:15,886 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1292 transitions. Word has length 21 [2022-03-01 17:07:15,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:15,887 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 1292 transitions. [2022-03-01 17:07:15,887 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) [2022-03-01 17:07:15,887 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1292 transitions. [2022-03-01 17:07:15,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:15,887 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:15,887 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] [2022-03-01 17:07:15,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-03-01 17:07:15,888 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:15,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:15,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1926116851, now seen corresponding path program 65 times [2022-03-01 17:07:15,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:15,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294929873] [2022-03-01 17:07:15,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:15,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:15,971 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:15,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294929873] [2022-03-01 17:07:15,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294929873] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:15,971 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:15,971 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:15,971 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344520214] [2022-03-01 17:07:15,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:15,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:15,971 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:15,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:15,972 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) [2022-03-01 17:07:16,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:16,042 INFO L93 Difference]: Finished difference Result 805 states and 2409 transitions. [2022-03-01 17:07:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:16,042 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 [2022-03-01 17:07:16,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:16,044 INFO L225 Difference]: With dead ends: 805 [2022-03-01 17:07:16,044 INFO L226 Difference]: Without dead ends: 695 [2022-03-01 17:07:16,044 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 [2022-03-01 17:07:16,044 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:16,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 89 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:07:16,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-03-01 17:07:16,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 423. [2022-03-01 17:07:16,050 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) [2022-03-01 17:07:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1349 transitions. [2022-03-01 17:07:16,051 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1349 transitions. Word has length 21 [2022-03-01 17:07:16,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:16,051 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 1349 transitions. [2022-03-01 17:07:16,051 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) [2022-03-01 17:07:16,051 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1349 transitions. [2022-03-01 17:07:16,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:16,052 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:16,052 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] [2022-03-01 17:07:16,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-03-01 17:07:16,052 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:16,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash 799921903, now seen corresponding path program 66 times [2022-03-01 17:07:16,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:16,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198230415] [2022-03-01 17:07:16,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:16,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:16,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:16,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:16,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198230415] [2022-03-01 17:07:16,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198230415] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:16,132 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:16,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:16,132 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204780434] [2022-03-01 17:07:16,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:16,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:16,132 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:16,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:16,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:16,132 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) [2022-03-01 17:07:16,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:16,212 INFO L93 Difference]: Finished difference Result 722 states and 2171 transitions. [2022-03-01 17:07:16,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:16,212 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 [2022-03-01 17:07:16,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:16,213 INFO L225 Difference]: With dead ends: 722 [2022-03-01 17:07:16,213 INFO L226 Difference]: Without dead ends: 601 [2022-03-01 17:07:16,213 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 [2022-03-01 17:07:16,214 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:16,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 108 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:07:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-03-01 17:07:16,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 393. [2022-03-01 17:07:16,219 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) [2022-03-01 17:07:16,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1268 transitions. [2022-03-01 17:07:16,220 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1268 transitions. Word has length 21 [2022-03-01 17:07:16,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:16,220 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 1268 transitions. [2022-03-01 17:07:16,220 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) [2022-03-01 17:07:16,220 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1268 transitions. [2022-03-01 17:07:16,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:16,221 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:16,221 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] [2022-03-01 17:07:16,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-03-01 17:07:16,221 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:16,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:16,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1835922061, now seen corresponding path program 67 times [2022-03-01 17:07:16,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:16,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882556686] [2022-03-01 17:07:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:16,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:16,313 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:16,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882556686] [2022-03-01 17:07:16,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882556686] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:16,313 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:16,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:16,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563867855] [2022-03-01 17:07:16,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:16,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:16,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:16,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:16,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:16,314 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) [2022-03-01 17:07:16,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:16,379 INFO L93 Difference]: Finished difference Result 788 states and 2359 transitions. [2022-03-01 17:07:16,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:16,380 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 [2022-03-01 17:07:16,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:16,381 INFO L225 Difference]: With dead ends: 788 [2022-03-01 17:07:16,381 INFO L226 Difference]: Without dead ends: 709 [2022-03-01 17:07:16,381 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 [2022-03-01 17:07:16,382 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 [2022-03-01 17:07:16,382 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] [2022-03-01 17:07:16,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-03-01 17:07:16,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 405. [2022-03-01 17:07:16,388 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) [2022-03-01 17:07:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1304 transitions. [2022-03-01 17:07:16,389 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1304 transitions. Word has length 21 [2022-03-01 17:07:16,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:16,389 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 1304 transitions. [2022-03-01 17:07:16,389 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) [2022-03-01 17:07:16,389 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1304 transitions. [2022-03-01 17:07:16,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:16,390 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:16,390 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] [2022-03-01 17:07:16,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-03-01 17:07:16,390 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:16,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:16,390 INFO L85 PathProgramCache]: Analyzing trace with hash 344427149, now seen corresponding path program 68 times [2022-03-01 17:07:16,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:16,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979739935] [2022-03-01 17:07:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:16,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:16,470 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:16,470 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979739935] [2022-03-01 17:07:16,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979739935] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:16,470 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:16,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:16,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270413015] [2022-03-01 17:07:16,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:16,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:16,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:16,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:16,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:16,471 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) [2022-03-01 17:07:16,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:16,544 INFO L93 Difference]: Finished difference Result 802 states and 2396 transitions. [2022-03-01 17:07:16,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:16,544 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 [2022-03-01 17:07:16,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:16,545 INFO L225 Difference]: With dead ends: 802 [2022-03-01 17:07:16,545 INFO L226 Difference]: Without dead ends: 701 [2022-03-01 17:07:16,546 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 [2022-03-01 17:07:16,546 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 [2022-03-01 17:07:16,546 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] [2022-03-01 17:07:16,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-03-01 17:07:16,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 397. [2022-03-01 17:07:16,552 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) [2022-03-01 17:07:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1280 transitions. [2022-03-01 17:07:16,553 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1280 transitions. Word has length 21 [2022-03-01 17:07:16,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:16,553 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 1280 transitions. [2022-03-01 17:07:16,553 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) [2022-03-01 17:07:16,553 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1280 transitions. [2022-03-01 17:07:16,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:16,554 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:16,554 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] [2022-03-01 17:07:16,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-03-01 17:07:16,554 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:16,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:16,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1377982609, now seen corresponding path program 69 times [2022-03-01 17:07:16,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:16,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181568200] [2022-03-01 17:07:16,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:16,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:16,634 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:16,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181568200] [2022-03-01 17:07:16,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181568200] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:16,634 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:16,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:16,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429813958] [2022-03-01 17:07:16,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:16,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:16,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:16,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:16,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:16,635 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) [2022-03-01 17:07:16,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:16,697 INFO L93 Difference]: Finished difference Result 800 states and 2395 transitions. [2022-03-01 17:07:16,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:16,698 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 [2022-03-01 17:07:16,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:16,699 INFO L225 Difference]: With dead ends: 800 [2022-03-01 17:07:16,699 INFO L226 Difference]: Without dead ends: 721 [2022-03-01 17:07:16,699 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 [2022-03-01 17:07:16,700 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 [2022-03-01 17:07:16,700 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] [2022-03-01 17:07:16,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-03-01 17:07:16,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 405. [2022-03-01 17:07:16,705 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) [2022-03-01 17:07:16,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1300 transitions. [2022-03-01 17:07:16,706 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1300 transitions. Word has length 21 [2022-03-01 17:07:16,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:16,706 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 1300 transitions. [2022-03-01 17:07:16,706 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) [2022-03-01 17:07:16,706 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1300 transitions. [2022-03-01 17:07:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:16,707 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:16,707 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] [2022-03-01 17:07:16,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-03-01 17:07:16,707 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:16,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:16,708 INFO L85 PathProgramCache]: Analyzing trace with hash 145074829, now seen corresponding path program 70 times [2022-03-01 17:07:16,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:16,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141688498] [2022-03-01 17:07:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:16,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:16,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:16,782 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:16,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141688498] [2022-03-01 17:07:16,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141688498] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:16,782 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:16,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:16,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237987485] [2022-03-01 17:07:16,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:16,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:16,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:16,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:16,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:16,783 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) [2022-03-01 17:07:16,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:16,867 INFO L93 Difference]: Finished difference Result 748 states and 2266 transitions. [2022-03-01 17:07:16,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:16,867 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 [2022-03-01 17:07:16,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:16,868 INFO L225 Difference]: With dead ends: 748 [2022-03-01 17:07:16,868 INFO L226 Difference]: Without dead ends: 649 [2022-03-01 17:07:16,869 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 [2022-03-01 17:07:16,869 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 58 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:16,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 108 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:07:16,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-03-01 17:07:16,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 397. [2022-03-01 17:07:16,875 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) [2022-03-01 17:07:16,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1276 transitions. [2022-03-01 17:07:16,875 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1276 transitions. Word has length 21 [2022-03-01 17:07:16,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:16,875 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 1276 transitions. [2022-03-01 17:07:16,876 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) [2022-03-01 17:07:16,876 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1276 transitions. [2022-03-01 17:07:16,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:16,876 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:16,876 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] [2022-03-01 17:07:16,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-03-01 17:07:16,876 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:16,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:16,877 INFO L85 PathProgramCache]: Analyzing trace with hash 900215437, now seen corresponding path program 71 times [2022-03-01 17:07:16,877 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:16,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830367559] [2022-03-01 17:07:16,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:16,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:16,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:16,955 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:16,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830367559] [2022-03-01 17:07:16,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830367559] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:16,955 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:16,955 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:16,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040857881] [2022-03-01 17:07:16,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:16,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:16,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:16,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:16,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:16,955 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) [2022-03-01 17:07:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:17,021 INFO L93 Difference]: Finished difference Result 776 states and 2315 transitions. [2022-03-01 17:07:17,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:17,021 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 [2022-03-01 17:07:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:17,022 INFO L225 Difference]: With dead ends: 776 [2022-03-01 17:07:17,022 INFO L226 Difference]: Without dead ends: 683 [2022-03-01 17:07:17,022 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 [2022-03-01 17:07:17,023 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 [2022-03-01 17:07:17,023 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] [2022-03-01 17:07:17,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-03-01 17:07:17,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 411. [2022-03-01 17:07:17,029 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) [2022-03-01 17:07:17,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 1313 transitions. [2022-03-01 17:07:17,030 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 1313 transitions. Word has length 21 [2022-03-01 17:07:17,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:17,030 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 1313 transitions. [2022-03-01 17:07:17,030 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) [2022-03-01 17:07:17,030 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 1313 transitions. [2022-03-01 17:07:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:17,031 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:17,031 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] [2022-03-01 17:07:17,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-03-01 17:07:17,031 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:17,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash -689719313, now seen corresponding path program 72 times [2022-03-01 17:07:17,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:17,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990466641] [2022-03-01 17:07:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:17,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:17,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:17,109 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:17,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990466641] [2022-03-01 17:07:17,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990466641] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:17,110 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:17,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:17,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924262959] [2022-03-01 17:07:17,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:17,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:17,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:17,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:17,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:17,110 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) [2022-03-01 17:07:17,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:17,177 INFO L93 Difference]: Finished difference Result 710 states and 2135 transitions. [2022-03-01 17:07:17,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:17,177 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 [2022-03-01 17:07:17,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:17,178 INFO L225 Difference]: With dead ends: 710 [2022-03-01 17:07:17,178 INFO L226 Difference]: Without dead ends: 593 [2022-03-01 17:07:17,178 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 [2022-03-01 17:07:17,179 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 [2022-03-01 17:07:17,179 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] [2022-03-01 17:07:17,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-03-01 17:07:17,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 385. [2022-03-01 17:07:17,184 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) [2022-03-01 17:07:17,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1252 transitions. [2022-03-01 17:07:17,184 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1252 transitions. Word has length 21 [2022-03-01 17:07:17,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:17,185 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 1252 transitions. [2022-03-01 17:07:17,185 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) [2022-03-01 17:07:17,185 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1252 transitions. [2022-03-01 17:07:17,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:17,185 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:17,185 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] [2022-03-01 17:07:17,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-03-01 17:07:17,185 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:17,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:17,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1640554035, now seen corresponding path program 73 times [2022-03-01 17:07:17,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:17,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555961050] [2022-03-01 17:07:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:17,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:17,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:17,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555961050] [2022-03-01 17:07:17,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555961050] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:17,274 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:17,274 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:17,274 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573545378] [2022-03-01 17:07:17,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:17,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:17,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:17,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:17,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:17,274 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) [2022-03-01 17:07:17,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:17,337 INFO L93 Difference]: Finished difference Result 760 states and 2275 transitions. [2022-03-01 17:07:17,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:17,337 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 [2022-03-01 17:07:17,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:17,338 INFO L225 Difference]: With dead ends: 760 [2022-03-01 17:07:17,338 INFO L226 Difference]: Without dead ends: 673 [2022-03-01 17:07:17,338 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 [2022-03-01 17:07:17,339 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 [2022-03-01 17:07:17,339 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] [2022-03-01 17:07:17,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-03-01 17:07:17,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 393. [2022-03-01 17:07:17,344 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) [2022-03-01 17:07:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1272 transitions. [2022-03-01 17:07:17,345 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1272 transitions. Word has length 21 [2022-03-01 17:07:17,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:17,345 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 1272 transitions. [2022-03-01 17:07:17,345 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) [2022-03-01 17:07:17,345 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1272 transitions. [2022-03-01 17:07:17,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:17,346 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:17,346 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] [2022-03-01 17:07:17,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-03-01 17:07:17,346 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:17,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:17,346 INFO L85 PathProgramCache]: Analyzing trace with hash 318168403, now seen corresponding path program 74 times [2022-03-01 17:07:17,346 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:17,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851945593] [2022-03-01 17:07:17,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:17,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:17,431 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:17,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851945593] [2022-03-01 17:07:17,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851945593] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:17,431 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:17,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:17,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143445691] [2022-03-01 17:07:17,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:17,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:17,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:17,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:17,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:17,432 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) [2022-03-01 17:07:17,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:17,495 INFO L93 Difference]: Finished difference Result 752 states and 2239 transitions. [2022-03-01 17:07:17,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:17,496 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 [2022-03-01 17:07:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:17,497 INFO L225 Difference]: With dead ends: 752 [2022-03-01 17:07:17,497 INFO L226 Difference]: Without dead ends: 665 [2022-03-01 17:07:17,497 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 [2022-03-01 17:07:17,497 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 66 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:17,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 94 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:07:17,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-03-01 17:07:17,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 385. [2022-03-01 17:07:17,503 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) [2022-03-01 17:07:17,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1248 transitions. [2022-03-01 17:07:17,503 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1248 transitions. Word has length 21 [2022-03-01 17:07:17,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:17,504 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 1248 transitions. [2022-03-01 17:07:17,504 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) [2022-03-01 17:07:17,504 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1248 transitions. [2022-03-01 17:07:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:17,504 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:17,504 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] [2022-03-01 17:07:17,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-03-01 17:07:17,505 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:17,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:17,505 INFO L85 PathProgramCache]: Analyzing trace with hash 611076267, now seen corresponding path program 75 times [2022-03-01 17:07:17,505 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:17,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845024721] [2022-03-01 17:07:17,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:17,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:17,596 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:17,596 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845024721] [2022-03-01 17:07:17,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845024721] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:17,596 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:17,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:17,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027440191] [2022-03-01 17:07:17,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:17,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:17,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:17,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:17,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:17,597 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) [2022-03-01 17:07:17,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:17,678 INFO L93 Difference]: Finished difference Result 803 states and 2410 transitions. [2022-03-01 17:07:17,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:17,678 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 [2022-03-01 17:07:17,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:17,680 INFO L225 Difference]: With dead ends: 803 [2022-03-01 17:07:17,680 INFO L226 Difference]: Without dead ends: 716 [2022-03-01 17:07:17,680 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 [2022-03-01 17:07:17,680 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 75 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-03-01 17:07:17,680 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] [2022-03-01 17:07:17,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-03-01 17:07:17,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 405. [2022-03-01 17:07:17,686 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) [2022-03-01 17:07:17,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1308 transitions. [2022-03-01 17:07:17,687 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1308 transitions. Word has length 21 [2022-03-01 17:07:17,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:17,687 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 1308 transitions. [2022-03-01 17:07:17,687 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) [2022-03-01 17:07:17,688 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1308 transitions. [2022-03-01 17:07:17,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:17,688 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:17,688 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] [2022-03-01 17:07:17,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-03-01 17:07:17,688 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:17,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash -664247539, now seen corresponding path program 76 times [2022-03-01 17:07:17,689 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:17,689 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827284209] [2022-03-01 17:07:17,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:17,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:17,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:17,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827284209] [2022-03-01 17:07:17,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827284209] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:17,780 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:17,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:17,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138845513] [2022-03-01 17:07:17,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:17,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:17,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:17,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:17,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:17,781 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) [2022-03-01 17:07:17,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:17,847 INFO L93 Difference]: Finished difference Result 826 states and 2465 transitions. [2022-03-01 17:07:17,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:17,847 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 [2022-03-01 17:07:17,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:17,849 INFO L225 Difference]: With dead ends: 826 [2022-03-01 17:07:17,849 INFO L226 Difference]: Without dead ends: 696 [2022-03-01 17:07:17,849 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 [2022-03-01 17:07:17,849 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 [2022-03-01 17:07:17,849 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] [2022-03-01 17:07:17,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-03-01 17:07:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 385. [2022-03-01 17:07:17,855 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) [2022-03-01 17:07:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1240 transitions. [2022-03-01 17:07:17,855 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1240 transitions. Word has length 21 [2022-03-01 17:07:17,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:17,855 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 1240 transitions. [2022-03-01 17:07:17,856 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) [2022-03-01 17:07:17,856 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1240 transitions. [2022-03-01 17:07:17,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:17,856 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:17,856 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] [2022-03-01 17:07:17,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-03-01 17:07:17,856 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:17,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:17,857 INFO L85 PathProgramCache]: Analyzing trace with hash -34971087, now seen corresponding path program 77 times [2022-03-01 17:07:17,857 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:17,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420173367] [2022-03-01 17:07:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:17,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:17,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:17,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420173367] [2022-03-01 17:07:17,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420173367] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:17,946 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:17,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:17,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672318618] [2022-03-01 17:07:17,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:17,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:17,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:17,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:17,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:17,946 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) [2022-03-01 17:07:18,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:18,004 INFO L93 Difference]: Finished difference Result 783 states and 2330 transitions. [2022-03-01 17:07:18,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:18,005 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 [2022-03-01 17:07:18,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:18,006 INFO L225 Difference]: With dead ends: 783 [2022-03-01 17:07:18,006 INFO L226 Difference]: Without dead ends: 704 [2022-03-01 17:07:18,006 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 [2022-03-01 17:07:18,006 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 [2022-03-01 17:07:18,007 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] [2022-03-01 17:07:18,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-03-01 17:07:18,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 401. [2022-03-01 17:07:18,012 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) [2022-03-01 17:07:18,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1288 transitions. [2022-03-01 17:07:18,013 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1288 transitions. Word has length 21 [2022-03-01 17:07:18,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:18,013 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 1288 transitions. [2022-03-01 17:07:18,013 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) [2022-03-01 17:07:18,013 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1288 transitions. [2022-03-01 17:07:18,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:18,014 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:18,014 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] [2022-03-01 17:07:18,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-03-01 17:07:18,014 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:18,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:18,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1624905837, now seen corresponding path program 78 times [2022-03-01 17:07:18,014 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:18,014 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956780794] [2022-03-01 17:07:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:18,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:18,104 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:18,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956780794] [2022-03-01 17:07:18,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956780794] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:18,104 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:18,104 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:18,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34318861] [2022-03-01 17:07:18,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:18,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:18,104 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:18,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:18,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:18,105 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) [2022-03-01 17:07:18,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:18,179 INFO L93 Difference]: Finished difference Result 814 states and 2417 transitions. [2022-03-01 17:07:18,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:18,179 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 [2022-03-01 17:07:18,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:18,180 INFO L225 Difference]: With dead ends: 814 [2022-03-01 17:07:18,180 INFO L226 Difference]: Without dead ends: 680 [2022-03-01 17:07:18,180 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 [2022-03-01 17:07:18,181 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:18,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 87 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:07:18,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-03-01 17:07:18,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 377. [2022-03-01 17:07:18,186 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) [2022-03-01 17:07:18,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1216 transitions. [2022-03-01 17:07:18,187 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1216 transitions. Word has length 21 [2022-03-01 17:07:18,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:18,187 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 1216 transitions. [2022-03-01 17:07:18,187 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) [2022-03-01 17:07:18,187 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1216 transitions. [2022-03-01 17:07:18,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:18,188 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:18,188 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] [2022-03-01 17:07:18,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-03-01 17:07:18,188 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:18,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1858386381, now seen corresponding path program 79 times [2022-03-01 17:07:18,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:18,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275123788] [2022-03-01 17:07:18,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:18,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:18,276 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:18,276 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275123788] [2022-03-01 17:07:18,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275123788] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:18,276 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:18,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:18,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660727758] [2022-03-01 17:07:18,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:18,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:18,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:18,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:18,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:18,277 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) [2022-03-01 17:07:18,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:18,347 INFO L93 Difference]: Finished difference Result 796 states and 2387 transitions. [2022-03-01 17:07:18,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:18,347 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 [2022-03-01 17:07:18,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:18,349 INFO L225 Difference]: With dead ends: 796 [2022-03-01 17:07:18,349 INFO L226 Difference]: Without dead ends: 709 [2022-03-01 17:07:18,349 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 [2022-03-01 17:07:18,349 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, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:18,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 95 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:07:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-03-01 17:07:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 389. [2022-03-01 17:07:18,355 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) [2022-03-01 17:07:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1252 transitions. [2022-03-01 17:07:18,356 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1252 transitions. Word has length 21 [2022-03-01 17:07:18,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:18,356 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 1252 transitions. [2022-03-01 17:07:18,356 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) [2022-03-01 17:07:18,356 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1252 transitions. [2022-03-01 17:07:18,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:18,357 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:18,357 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] [2022-03-01 17:07:18,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-03-01 17:07:18,357 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:18,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:18,357 INFO L85 PathProgramCache]: Analyzing trace with hash -477858477, now seen corresponding path program 80 times [2022-03-01 17:07:18,357 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:18,357 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009353053] [2022-03-01 17:07:18,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:18,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:18,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:18,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:18,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009353053] [2022-03-01 17:07:18,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009353053] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:18,448 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:18,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:18,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280496433] [2022-03-01 17:07:18,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:18,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:18,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:18,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:18,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:18,449 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) [2022-03-01 17:07:18,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:18,509 INFO L93 Difference]: Finished difference Result 788 states and 2351 transitions. [2022-03-01 17:07:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:18,510 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 [2022-03-01 17:07:18,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:18,511 INFO L225 Difference]: With dead ends: 788 [2022-03-01 17:07:18,511 INFO L226 Difference]: Without dead ends: 701 [2022-03-01 17:07:18,511 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 [2022-03-01 17:07:18,511 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 [2022-03-01 17:07:18,511 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] [2022-03-01 17:07:18,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-03-01 17:07:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 381. [2022-03-01 17:07:18,517 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) [2022-03-01 17:07:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1228 transitions. [2022-03-01 17:07:18,517 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1228 transitions. Word has length 21 [2022-03-01 17:07:18,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:18,517 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 1228 transitions. [2022-03-01 17:07:18,518 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) [2022-03-01 17:07:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1228 transitions. [2022-03-01 17:07:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:18,518 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:18,518 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] [2022-03-01 17:07:18,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-03-01 17:07:18,518 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:18,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:18,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1880792627, now seen corresponding path program 81 times [2022-03-01 17:07:18,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:18,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546013284] [2022-03-01 17:07:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:18,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:18,602 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:18,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546013284] [2022-03-01 17:07:18,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546013284] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:18,602 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:18,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:18,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790245095] [2022-03-01 17:07:18,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:18,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:18,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:18,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:18,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:18,603 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) [2022-03-01 17:07:18,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:18,663 INFO L93 Difference]: Finished difference Result 788 states and 2363 transitions. [2022-03-01 17:07:18,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:18,663 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 [2022-03-01 17:07:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:18,664 INFO L225 Difference]: With dead ends: 788 [2022-03-01 17:07:18,664 INFO L226 Difference]: Without dead ends: 701 [2022-03-01 17:07:18,664 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 [2022-03-01 17:07:18,665 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 [2022-03-01 17:07:18,665 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] [2022-03-01 17:07:18,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-03-01 17:07:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 393. [2022-03-01 17:07:18,670 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) [2022-03-01 17:07:18,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1260 transitions. [2022-03-01 17:07:18,671 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1260 transitions. Word has length 21 [2022-03-01 17:07:18,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:18,671 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 1260 transitions. [2022-03-01 17:07:18,671 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) [2022-03-01 17:07:18,671 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1260 transitions. [2022-03-01 17:07:18,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:18,672 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:18,672 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] [2022-03-01 17:07:18,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-03-01 17:07:18,672 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:18,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:18,672 INFO L85 PathProgramCache]: Analyzing trace with hash -176395473, now seen corresponding path program 82 times [2022-03-01 17:07:18,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:18,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872272330] [2022-03-01 17:07:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:18,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:18,757 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:18,757 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872272330] [2022-03-01 17:07:18,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872272330] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:18,757 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:18,757 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:18,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163740347] [2022-03-01 17:07:18,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:18,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:18,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:18,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:18,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:18,758 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) [2022-03-01 17:07:18,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:18,822 INFO L93 Difference]: Finished difference Result 728 states and 2202 transitions. [2022-03-01 17:07:18,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:18,822 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 [2022-03-01 17:07:18,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:18,824 INFO L225 Difference]: With dead ends: 728 [2022-03-01 17:07:18,824 INFO L226 Difference]: Without dead ends: 625 [2022-03-01 17:07:18,824 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 [2022-03-01 17:07:18,827 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 [2022-03-01 17:07:18,827 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] [2022-03-01 17:07:18,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-03-01 17:07:18,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 381. [2022-03-01 17:07:18,832 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) [2022-03-01 17:07:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1224 transitions. [2022-03-01 17:07:18,833 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1224 transitions. Word has length 21 [2022-03-01 17:07:18,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:18,834 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 1224 transitions. [2022-03-01 17:07:18,834 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) [2022-03-01 17:07:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1224 transitions. [2022-03-01 17:07:18,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:18,834 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:18,834 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] [2022-03-01 17:07:18,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-03-01 17:07:18,835 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:18,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:18,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1768127315, now seen corresponding path program 83 times [2022-03-01 17:07:18,835 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:18,835 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815560877] [2022-03-01 17:07:18,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:18,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:18,913 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:18,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815560877] [2022-03-01 17:07:18,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815560877] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:18,914 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:18,914 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:18,914 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129866118] [2022-03-01 17:07:18,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:18,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:18,914 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:18,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:18,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:18,914 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) [2022-03-01 17:07:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:18,981 INFO L93 Difference]: Finished difference Result 776 states and 2315 transitions. [2022-03-01 17:07:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:18,981 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 [2022-03-01 17:07:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:18,982 INFO L225 Difference]: With dead ends: 776 [2022-03-01 17:07:18,982 INFO L226 Difference]: Without dead ends: 697 [2022-03-01 17:07:18,982 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 [2022-03-01 17:07:18,983 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 [2022-03-01 17:07:18,983 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] [2022-03-01 17:07:18,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-03-01 17:07:18,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 389. [2022-03-01 17:07:18,988 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) [2022-03-01 17:07:18,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1244 transitions. [2022-03-01 17:07:18,989 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1244 transitions. Word has length 21 [2022-03-01 17:07:18,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:18,989 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 1244 transitions. [2022-03-01 17:07:18,989 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) [2022-03-01 17:07:18,989 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1244 transitions. [2022-03-01 17:07:18,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:18,990 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:18,990 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] [2022-03-01 17:07:18,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-03-01 17:07:18,990 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:18,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:18,990 INFO L85 PathProgramCache]: Analyzing trace with hash 220204981, now seen corresponding path program 84 times [2022-03-01 17:07:18,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:18,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958715433] [2022-03-01 17:07:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:18,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:19,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:19,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958715433] [2022-03-01 17:07:19,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958715433] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:19,064 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:19,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:19,064 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073145236] [2022-03-01 17:07:19,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:19,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:19,065 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:19,065 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) [2022-03-01 17:07:19,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:19,125 INFO L93 Difference]: Finished difference Result 724 states and 2186 transitions. [2022-03-01 17:07:19,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:19,126 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 [2022-03-01 17:07:19,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:19,127 INFO L225 Difference]: With dead ends: 724 [2022-03-01 17:07:19,127 INFO L226 Difference]: Without dead ends: 621 [2022-03-01 17:07:19,127 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 [2022-03-01 17:07:19,127 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 [2022-03-01 17:07:19,127 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] [2022-03-01 17:07:19,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-03-01 17:07:19,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 377. [2022-03-01 17:07:19,132 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) [2022-03-01 17:07:19,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1214 transitions. [2022-03-01 17:07:19,133 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1214 transitions. Word has length 21 [2022-03-01 17:07:19,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:19,133 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 1214 transitions. [2022-03-01 17:07:19,133 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) [2022-03-01 17:07:19,133 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1214 transitions. [2022-03-01 17:07:19,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:19,134 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:19,134 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] [2022-03-01 17:07:19,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-03-01 17:07:19,134 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:19,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:19,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1454233301, now seen corresponding path program 85 times [2022-03-01 17:07:19,134 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:19,134 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716713380] [2022-03-01 17:07:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:19,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:19,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:19,223 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:19,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716713380] [2022-03-01 17:07:19,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716713380] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:19,223 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:19,223 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:19,223 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781701571] [2022-03-01 17:07:19,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:19,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:19,223 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:19,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:19,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:19,224 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) [2022-03-01 17:07:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:19,290 INFO L93 Difference]: Finished difference Result 791 states and 2360 transitions. [2022-03-01 17:07:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:19,291 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 [2022-03-01 17:07:19,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:19,292 INFO L225 Difference]: With dead ends: 791 [2022-03-01 17:07:19,292 INFO L226 Difference]: Without dead ends: 704 [2022-03-01 17:07:19,292 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 [2022-03-01 17:07:19,292 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 [2022-03-01 17:07:19,292 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] [2022-03-01 17:07:19,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-03-01 17:07:19,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 377. [2022-03-01 17:07:19,301 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) [2022-03-01 17:07:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1202 transitions. [2022-03-01 17:07:19,302 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1202 transitions. Word has length 21 [2022-03-01 17:07:19,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:19,302 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 1202 transitions. [2022-03-01 17:07:19,302 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) [2022-03-01 17:07:19,302 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1202 transitions. [2022-03-01 17:07:19,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:19,302 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:19,302 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] [2022-03-01 17:07:19,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-03-01 17:07:19,303 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:19,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:19,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1565410189, now seen corresponding path program 86 times [2022-03-01 17:07:19,303 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:19,303 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080298497] [2022-03-01 17:07:19,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:19,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:19,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:19,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080298497] [2022-03-01 17:07:19,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080298497] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:19,387 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:19,387 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:19,387 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659499194] [2022-03-01 17:07:19,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:19,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:19,387 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:19,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:19,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:19,388 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) [2022-03-01 17:07:19,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:19,461 INFO L93 Difference]: Finished difference Result 814 states and 2415 transitions. [2022-03-01 17:07:19,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:19,465 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 [2022-03-01 17:07:19,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:19,466 INFO L225 Difference]: With dead ends: 814 [2022-03-01 17:07:19,466 INFO L226 Difference]: Without dead ends: 684 [2022-03-01 17:07:19,466 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 [2022-03-01 17:07:19,467 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:19,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 92 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:07:19,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-03-01 17:07:19,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 357. [2022-03-01 17:07:19,472 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) [2022-03-01 17:07:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 1132 transitions. [2022-03-01 17:07:19,472 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 1132 transitions. Word has length 21 [2022-03-01 17:07:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:19,473 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 1132 transitions. [2022-03-01 17:07:19,473 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) [2022-03-01 17:07:19,473 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 1132 transitions. [2022-03-01 17:07:19,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:19,473 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:19,473 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] [2022-03-01 17:07:19,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-03-01 17:07:19,473 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:19,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:19,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1661041267, now seen corresponding path program 87 times [2022-03-01 17:07:19,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:19,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429385101] [2022-03-01 17:07:19,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:19,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:19,557 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:19,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429385101] [2022-03-01 17:07:19,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429385101] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:19,557 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:19,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:19,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703873702] [2022-03-01 17:07:19,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:19,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:19,558 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:19,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:19,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:19,558 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) [2022-03-01 17:07:19,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:19,623 INFO L93 Difference]: Finished difference Result 740 states and 2191 transitions. [2022-03-01 17:07:19,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:19,624 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 [2022-03-01 17:07:19,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:19,625 INFO L225 Difference]: With dead ends: 740 [2022-03-01 17:07:19,625 INFO L226 Difference]: Without dead ends: 653 [2022-03-01 17:07:19,625 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 [2022-03-01 17:07:19,625 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 [2022-03-01 17:07:19,625 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] [2022-03-01 17:07:19,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-03-01 17:07:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 369. [2022-03-01 17:07:19,630 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) [2022-03-01 17:07:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 1164 transitions. [2022-03-01 17:07:19,631 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 1164 transitions. Word has length 21 [2022-03-01 17:07:19,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:19,631 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 1164 transitions. [2022-03-01 17:07:19,631 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) [2022-03-01 17:07:19,631 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 1164 transitions. [2022-03-01 17:07:19,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:19,632 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:19,632 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] [2022-03-01 17:07:19,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-03-01 17:07:19,632 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:19,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:19,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1023192435, now seen corresponding path program 88 times [2022-03-01 17:07:19,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:19,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567660896] [2022-03-01 17:07:19,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:19,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:19,708 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:19,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567660896] [2022-03-01 17:07:19,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567660896] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:19,708 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:19,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:19,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324681413] [2022-03-01 17:07:19,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:19,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:19,708 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:19,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:19,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:19,709 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) [2022-03-01 17:07:19,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:19,775 INFO L93 Difference]: Finished difference Result 680 states and 2030 transitions. [2022-03-01 17:07:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:19,775 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 [2022-03-01 17:07:19,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:19,777 INFO L225 Difference]: With dead ends: 680 [2022-03-01 17:07:19,777 INFO L226 Difference]: Without dead ends: 577 [2022-03-01 17:07:19,777 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 [2022-03-01 17:07:19,777 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 [2022-03-01 17:07:19,777 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] [2022-03-01 17:07:19,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-03-01 17:07:19,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 357. [2022-03-01 17:07:19,782 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) [2022-03-01 17:07:19,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 1126 transitions. [2022-03-01 17:07:19,782 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 1126 transitions. Word has length 21 [2022-03-01 17:07:19,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:19,783 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 1126 transitions. [2022-03-01 17:07:19,783 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) [2022-03-01 17:07:19,783 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 1126 transitions. [2022-03-01 17:07:19,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:19,783 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:19,783 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] [2022-03-01 17:07:19,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-03-01 17:07:19,784 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:19,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:19,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1186431889, now seen corresponding path program 89 times [2022-03-01 17:07:19,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:19,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899581779] [2022-03-01 17:07:19,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:19,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:19,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:19,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899581779] [2022-03-01 17:07:19,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899581779] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:19,862 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:19,862 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:19,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235109506] [2022-03-01 17:07:19,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:19,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:19,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:19,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:19,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:19,863 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) [2022-03-01 17:07:19,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:19,921 INFO L93 Difference]: Finished difference Result 773 states and 2287 transitions. [2022-03-01 17:07:19,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:19,921 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 [2022-03-01 17:07:19,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:19,922 INFO L225 Difference]: With dead ends: 773 [2022-03-01 17:07:19,922 INFO L226 Difference]: Without dead ends: 663 [2022-03-01 17:07:19,922 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 [2022-03-01 17:07:19,923 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 [2022-03-01 17:07:19,923 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] [2022-03-01 17:07:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-03-01 17:07:19,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 379. [2022-03-01 17:07:19,928 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) [2022-03-01 17:07:19,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1183 transitions. [2022-03-01 17:07:19,929 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1183 transitions. Word has length 21 [2022-03-01 17:07:19,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:19,929 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 1183 transitions. [2022-03-01 17:07:19,929 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) [2022-03-01 17:07:19,929 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1183 transitions. [2022-03-01 17:07:19,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:19,929 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:19,929 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] [2022-03-01 17:07:19,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-03-01 17:07:19,930 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:19,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:19,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1098495155, now seen corresponding path program 90 times [2022-03-01 17:07:19,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:19,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600462721] [2022-03-01 17:07:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:19,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:20,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:20,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600462721] [2022-03-01 17:07:20,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600462721] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:20,001 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:20,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:20,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543470594] [2022-03-01 17:07:20,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:20,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:20,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:20,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:20,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:20,002 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) [2022-03-01 17:07:20,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:20,068 INFO L93 Difference]: Finished difference Result 690 states and 2049 transitions. [2022-03-01 17:07:20,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:20,069 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 [2022-03-01 17:07:20,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:20,070 INFO L225 Difference]: With dead ends: 690 [2022-03-01 17:07:20,070 INFO L226 Difference]: Without dead ends: 567 [2022-03-01 17:07:20,070 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 [2022-03-01 17:07:20,070 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 [2022-03-01 17:07:20,070 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] [2022-03-01 17:07:20,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-03-01 17:07:20,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 347. [2022-03-01 17:07:20,075 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) [2022-03-01 17:07:20,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1097 transitions. [2022-03-01 17:07:20,075 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1097 transitions. Word has length 21 [2022-03-01 17:07:20,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:20,076 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 1097 transitions. [2022-03-01 17:07:20,076 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) [2022-03-01 17:07:20,076 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1097 transitions. [2022-03-01 17:07:20,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:20,076 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:20,076 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] [2022-03-01 17:07:20,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-03-01 17:07:20,076 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:20,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:20,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1318117199, now seen corresponding path program 91 times [2022-03-01 17:07:20,077 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:20,077 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400520527] [2022-03-01 17:07:20,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:20,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:20,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:20,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400520527] [2022-03-01 17:07:20,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400520527] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:20,150 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:20,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:20,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104296684] [2022-03-01 17:07:20,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:20,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:20,150 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:20,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:20,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:20,150 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) [2022-03-01 17:07:20,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:20,221 INFO L93 Difference]: Finished difference Result 686 states and 2000 transitions. [2022-03-01 17:07:20,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:20,221 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 [2022-03-01 17:07:20,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:20,222 INFO L225 Difference]: With dead ends: 686 [2022-03-01 17:07:20,222 INFO L226 Difference]: Without dead ends: 607 [2022-03-01 17:07:20,222 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 [2022-03-01 17:07:20,223 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:20,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 94 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:07:20,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-03-01 17:07:20,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 347. [2022-03-01 17:07:20,227 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) [2022-03-01 17:07:20,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1089 transitions. [2022-03-01 17:07:20,228 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1089 transitions. Word has length 21 [2022-03-01 17:07:20,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:20,228 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 1089 transitions. [2022-03-01 17:07:20,228 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) [2022-03-01 17:07:20,228 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1089 transitions. [2022-03-01 17:07:20,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:20,229 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:20,229 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] [2022-03-01 17:07:20,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-03-01 17:07:20,229 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:20,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:20,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1386915347, now seen corresponding path program 92 times [2022-03-01 17:07:20,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:20,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850265555] [2022-03-01 17:07:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:20,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:20,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:20,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850265555] [2022-03-01 17:07:20,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850265555] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:20,321 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:20,321 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:20,322 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816764905] [2022-03-01 17:07:20,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:20,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:20,322 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:20,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:20,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:20,322 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) [2022-03-01 17:07:20,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:20,380 INFO L93 Difference]: Finished difference Result 717 states and 2087 transitions. [2022-03-01 17:07:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:20,380 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 [2022-03-01 17:07:20,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:20,381 INFO L225 Difference]: With dead ends: 717 [2022-03-01 17:07:20,381 INFO L226 Difference]: Without dead ends: 591 [2022-03-01 17:07:20,381 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 [2022-03-01 17:07:20,381 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 [2022-03-01 17:07:20,381 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] [2022-03-01 17:07:20,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-03-01 17:07:20,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 331. [2022-03-01 17:07:20,386 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) [2022-03-01 17:07:20,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 1033 transitions. [2022-03-01 17:07:20,387 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 1033 transitions. Word has length 21 [2022-03-01 17:07:20,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:20,387 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 1033 transitions. [2022-03-01 17:07:20,387 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) [2022-03-01 17:07:20,387 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 1033 transitions. [2022-03-01 17:07:20,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:20,387 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:20,387 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] [2022-03-01 17:07:20,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-03-01 17:07:20,388 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:20,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:20,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1524925165, now seen corresponding path program 93 times [2022-03-01 17:07:20,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:20,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160102093] [2022-03-01 17:07:20,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:20,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:20,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:20,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160102093] [2022-03-01 17:07:20,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160102093] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:20,466 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:20,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:20,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420734453] [2022-03-01 17:07:20,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:20,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:20,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:20,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:20,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:20,466 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) [2022-03-01 17:07:20,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:20,531 INFO L93 Difference]: Finished difference Result 690 states and 2004 transitions. [2022-03-01 17:07:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:20,531 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 [2022-03-01 17:07:20,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:20,532 INFO L225 Difference]: With dead ends: 690 [2022-03-01 17:07:20,532 INFO L226 Difference]: Without dead ends: 611 [2022-03-01 17:07:20,532 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 [2022-03-01 17:07:20,533 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 [2022-03-01 17:07:20,533 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] [2022-03-01 17:07:20,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-03-01 17:07:20,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 339. [2022-03-01 17:07:20,537 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) [2022-03-01 17:07:20,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 1053 transitions. [2022-03-01 17:07:20,538 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 1053 transitions. Word has length 21 [2022-03-01 17:07:20,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:20,538 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 1053 transitions. [2022-03-01 17:07:20,538 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) [2022-03-01 17:07:20,538 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 1053 transitions. [2022-03-01 17:07:20,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:20,541 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:20,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:07:20,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-03-01 17:07:20,541 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:20,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:20,541 INFO L85 PathProgramCache]: Analyzing trace with hash 155571475, now seen corresponding path program 94 times [2022-03-01 17:07:20,541 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:20,541 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143823301] [2022-03-01 17:07:20,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:20,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:20,625 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:20,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143823301] [2022-03-01 17:07:20,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143823301] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:20,625 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:20,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:20,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390221695] [2022-03-01 17:07:20,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:20,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:20,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:20,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:20,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:20,626 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) [2022-03-01 17:07:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:20,704 INFO L93 Difference]: Finished difference Result 638 states and 1875 transitions. [2022-03-01 17:07:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:20,704 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 [2022-03-01 17:07:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:20,705 INFO L225 Difference]: With dead ends: 638 [2022-03-01 17:07:20,705 INFO L226 Difference]: Without dead ends: 539 [2022-03-01 17:07:20,705 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 [2022-03-01 17:07:20,706 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:20,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 95 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:07:20,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-03-01 17:07:20,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 331. [2022-03-01 17:07:20,710 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) [2022-03-01 17:07:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 1029 transitions. [2022-03-01 17:07:20,711 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 1029 transitions. Word has length 21 [2022-03-01 17:07:20,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:20,711 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 1029 transitions. [2022-03-01 17:07:20,711 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) [2022-03-01 17:07:20,711 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 1029 transitions. [2022-03-01 17:07:20,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:20,712 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:20,712 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] [2022-03-01 17:07:20,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-03-01 17:07:20,712 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:20,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:20,712 INFO L85 PathProgramCache]: Analyzing trace with hash -107763211, now seen corresponding path program 95 times [2022-03-01 17:07:20,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:20,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448462827] [2022-03-01 17:07:20,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:20,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:20,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:20,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448462827] [2022-03-01 17:07:20,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448462827] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:20,795 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:20,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:20,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835782847] [2022-03-01 17:07:20,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:20,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:20,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:20,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:20,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:20,796 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) [2022-03-01 17:07:20,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:20,852 INFO L93 Difference]: Finished difference Result 666 states and 1924 transitions. [2022-03-01 17:07:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:20,852 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 [2022-03-01 17:07:20,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:20,853 INFO L225 Difference]: With dead ends: 666 [2022-03-01 17:07:20,853 INFO L226 Difference]: Without dead ends: 556 [2022-03-01 17:07:20,853 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 [2022-03-01 17:07:20,854 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 [2022-03-01 17:07:20,854 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] [2022-03-01 17:07:20,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-03-01 17:07:20,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 284. [2022-03-01 17:07:20,857 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) [2022-03-01 17:07:20,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 864 transitions. [2022-03-01 17:07:20,858 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 864 transitions. Word has length 21 [2022-03-01 17:07:20,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:20,858 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 864 transitions. [2022-03-01 17:07:20,858 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) [2022-03-01 17:07:20,858 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 864 transitions. [2022-03-01 17:07:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:20,859 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:20,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:07:20,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-03-01 17:07:20,859 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1499907757, now seen corresponding path program 96 times [2022-03-01 17:07:20,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:20,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795067475] [2022-03-01 17:07:20,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:20,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:20,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:20,952 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:20,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795067475] [2022-03-01 17:07:20,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795067475] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:20,952 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:20,952 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:20,952 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519031733] [2022-03-01 17:07:20,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:20,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:20,952 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:20,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:20,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:20,953 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) [2022-03-01 17:07:21,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:21,012 INFO L93 Difference]: Finished difference Result 583 states and 1686 transitions. [2022-03-01 17:07:21,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:21,013 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 [2022-03-01 17:07:21,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:21,014 INFO L225 Difference]: With dead ends: 583 [2022-03-01 17:07:21,014 INFO L226 Difference]: Without dead ends: 458 [2022-03-01 17:07:21,014 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 [2022-03-01 17:07:21,014 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 [2022-03-01 17:07:21,014 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] [2022-03-01 17:07:21,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-03-01 17:07:21,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 250. [2022-03-01 17:07:21,017 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) [2022-03-01 17:07:21,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 777 transitions. [2022-03-01 17:07:21,018 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 777 transitions. Word has length 21 [2022-03-01 17:07:21,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:21,018 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 777 transitions. [2022-03-01 17:07:21,018 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) [2022-03-01 17:07:21,018 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 777 transitions. [2022-03-01 17:07:21,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:21,019 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:21,019 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] [2022-03-01 17:07:21,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-03-01 17:07:21,019 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:21,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:21,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1797665195, now seen corresponding path program 97 times [2022-03-01 17:07:21,019 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:21,019 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263152116] [2022-03-01 17:07:21,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:21,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:21,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:21,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263152116] [2022-03-01 17:07:21,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263152116] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:21,105 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:21,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:21,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689896320] [2022-03-01 17:07:21,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:21,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:21,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:21,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:21,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:21,106 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) [2022-03-01 17:07:21,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:21,159 INFO L93 Difference]: Finished difference Result 513 states and 1487 transitions. [2022-03-01 17:07:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:21,159 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 [2022-03-01 17:07:21,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:21,160 INFO L225 Difference]: With dead ends: 513 [2022-03-01 17:07:21,160 INFO L226 Difference]: Without dead ends: 426 [2022-03-01 17:07:21,160 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 [2022-03-01 17:07:21,160 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 [2022-03-01 17:07:21,160 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] [2022-03-01 17:07:21,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-03-01 17:07:21,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 258. [2022-03-01 17:07:21,164 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) [2022-03-01 17:07:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 797 transitions. [2022-03-01 17:07:21,164 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 797 transitions. Word has length 21 [2022-03-01 17:07:21,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:21,164 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 797 transitions. [2022-03-01 17:07:21,164 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) [2022-03-01 17:07:21,164 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 797 transitions. [2022-03-01 17:07:21,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:21,165 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:21,165 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] [2022-03-01 17:07:21,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-03-01 17:07:21,165 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:21,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:21,165 INFO L85 PathProgramCache]: Analyzing trace with hash -538579663, now seen corresponding path program 98 times [2022-03-01 17:07:21,165 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:21,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892289120] [2022-03-01 17:07:21,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:21,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:21,244 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:21,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892289120] [2022-03-01 17:07:21,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892289120] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:21,244 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:21,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:21,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842513894] [2022-03-01 17:07:21,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:21,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:21,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:21,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:21,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:21,245 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) [2022-03-01 17:07:21,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:21,297 INFO L93 Difference]: Finished difference Result 505 states and 1451 transitions. [2022-03-01 17:07:21,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:21,298 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 [2022-03-01 17:07:21,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:21,298 INFO L225 Difference]: With dead ends: 505 [2022-03-01 17:07:21,298 INFO L226 Difference]: Without dead ends: 418 [2022-03-01 17:07:21,299 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 [2022-03-01 17:07:21,299 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 [2022-03-01 17:07:21,299 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] [2022-03-01 17:07:21,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-03-01 17:07:21,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 250. [2022-03-01 17:07:21,302 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) [2022-03-01 17:07:21,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 773 transitions. [2022-03-01 17:07:21,303 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 773 transitions. Word has length 21 [2022-03-01 17:07:21,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:21,303 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 773 transitions. [2022-03-01 17:07:21,303 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) [2022-03-01 17:07:21,303 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 773 transitions. [2022-03-01 17:07:21,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:21,304 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:21,304 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] [2022-03-01 17:07:21,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-03-01 17:07:21,304 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:21,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:21,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1304835669, now seen corresponding path program 99 times [2022-03-01 17:07:21,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:21,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154867144] [2022-03-01 17:07:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:21,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:21,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:21,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:21,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154867144] [2022-03-01 17:07:21,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154867144] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:21,387 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:21,387 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:21,387 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174618126] [2022-03-01 17:07:21,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:21,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:21,387 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:21,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:21,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:21,387 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) [2022-03-01 17:07:21,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:21,448 INFO L93 Difference]: Finished difference Result 531 states and 1544 transitions. [2022-03-01 17:07:21,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:21,449 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 [2022-03-01 17:07:21,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:21,449 INFO L225 Difference]: With dead ends: 531 [2022-03-01 17:07:21,449 INFO L226 Difference]: Without dead ends: 444 [2022-03-01 17:07:21,450 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 [2022-03-01 17:07:21,450 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 [2022-03-01 17:07:21,450 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] [2022-03-01 17:07:21,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-03-01 17:07:21,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 262. [2022-03-01 17:07:21,453 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) [2022-03-01 17:07:21,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 805 transitions. [2022-03-01 17:07:21,454 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 805 transitions. Word has length 21 [2022-03-01 17:07:21,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:21,454 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 805 transitions. [2022-03-01 17:07:21,454 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) [2022-03-01 17:07:21,454 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 805 transitions. [2022-03-01 17:07:21,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:21,455 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:21,455 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] [2022-03-01 17:07:21,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-03-01 17:07:21,455 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:21,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:21,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1057184653, now seen corresponding path program 100 times [2022-03-01 17:07:21,455 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:21,455 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553979145] [2022-03-01 17:07:21,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:21,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:21,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:21,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553979145] [2022-03-01 17:07:21,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553979145] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:21,535 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:21,535 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:21,535 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066485140] [2022-03-01 17:07:21,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:21,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:21,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:21,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:21,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:21,536 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) [2022-03-01 17:07:21,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:21,590 INFO L93 Difference]: Finished difference Result 537 states and 1549 transitions. [2022-03-01 17:07:21,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:21,590 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 [2022-03-01 17:07:21,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:21,591 INFO L225 Difference]: With dead ends: 537 [2022-03-01 17:07:21,591 INFO L226 Difference]: Without dead ends: 432 [2022-03-01 17:07:21,591 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 [2022-03-01 17:07:21,591 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 [2022-03-01 17:07:21,592 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] [2022-03-01 17:07:21,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-03-01 17:07:21,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 250. [2022-03-01 17:07:21,595 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) [2022-03-01 17:07:21,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 769 transitions. [2022-03-01 17:07:21,595 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 769 transitions. Word has length 21 [2022-03-01 17:07:21,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:21,595 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 769 transitions. [2022-03-01 17:07:21,595 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) [2022-03-01 17:07:21,596 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 769 transitions. [2022-03-01 17:07:21,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:21,596 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:21,596 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] [2022-03-01 17:07:21,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-03-01 17:07:21,596 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:21,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:21,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1950883023, now seen corresponding path program 101 times [2022-03-01 17:07:21,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:21,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122909025] [2022-03-01 17:07:21,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:21,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:21,669 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:21,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122909025] [2022-03-01 17:07:21,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122909025] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:21,669 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:21,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:21,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834238563] [2022-03-01 17:07:21,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:21,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:21,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:21,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:21,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:21,670 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) [2022-03-01 17:07:21,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:21,721 INFO L93 Difference]: Finished difference Result 511 states and 1468 transitions. [2022-03-01 17:07:21,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:21,722 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 [2022-03-01 17:07:21,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:21,722 INFO L225 Difference]: With dead ends: 511 [2022-03-01 17:07:21,722 INFO L226 Difference]: Without dead ends: 432 [2022-03-01 17:07:21,723 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 [2022-03-01 17:07:21,723 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 [2022-03-01 17:07:21,723 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] [2022-03-01 17:07:21,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-03-01 17:07:21,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 258. [2022-03-01 17:07:21,726 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) [2022-03-01 17:07:21,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 789 transitions. [2022-03-01 17:07:21,727 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 789 transitions. Word has length 21 [2022-03-01 17:07:21,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:21,727 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 789 transitions. [2022-03-01 17:07:21,727 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) [2022-03-01 17:07:21,727 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 789 transitions. [2022-03-01 17:07:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:21,727 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:21,727 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] [2022-03-01 17:07:21,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-03-01 17:07:21,728 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:21,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:21,728 INFO L85 PathProgramCache]: Analyzing trace with hash 775155731, now seen corresponding path program 102 times [2022-03-01 17:07:21,728 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:21,728 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937594206] [2022-03-01 17:07:21,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:21,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:21,807 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:21,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937594206] [2022-03-01 17:07:21,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937594206] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:21,808 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:21,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:21,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675577837] [2022-03-01 17:07:21,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:21,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:21,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:21,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:21,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:21,808 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) [2022-03-01 17:07:21,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:21,866 INFO L93 Difference]: Finished difference Result 525 states and 1505 transitions. [2022-03-01 17:07:21,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:21,867 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 [2022-03-01 17:07:21,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:21,868 INFO L225 Difference]: With dead ends: 525 [2022-03-01 17:07:21,868 INFO L226 Difference]: Without dead ends: 420 [2022-03-01 17:07:21,868 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 [2022-03-01 17:07:21,868 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 [2022-03-01 17:07:21,868 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] [2022-03-01 17:07:21,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-01 17:07:21,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 246. [2022-03-01 17:07:21,871 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) [2022-03-01 17:07:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 759 transitions. [2022-03-01 17:07:21,872 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 759 transitions. Word has length 21 [2022-03-01 17:07:21,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:21,872 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 759 transitions. [2022-03-01 17:07:21,872 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) [2022-03-01 17:07:21,872 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 759 transitions. [2022-03-01 17:07:21,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:21,872 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:21,872 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] [2022-03-01 17:07:21,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-03-01 17:07:21,872 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:21,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:21,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1316763149, now seen corresponding path program 103 times [2022-03-01 17:07:21,873 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:21,873 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480256614] [2022-03-01 17:07:21,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:21,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:21,954 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:21,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480256614] [2022-03-01 17:07:21,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480256614] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:21,955 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:21,955 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:21,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065343397] [2022-03-01 17:07:21,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:21,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:21,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:21,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:21,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:21,955 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) [2022-03-01 17:07:22,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:22,010 INFO L93 Difference]: Finished difference Result 501 states and 1441 transitions. [2022-03-01 17:07:22,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:22,010 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 [2022-03-01 17:07:22,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:22,011 INFO L225 Difference]: With dead ends: 501 [2022-03-01 17:07:22,011 INFO L226 Difference]: Without dead ends: 414 [2022-03-01 17:07:22,011 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 [2022-03-01 17:07:22,011 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 [2022-03-01 17:07:22,011 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] [2022-03-01 17:07:22,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-03-01 17:07:22,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 246. [2022-03-01 17:07:22,015 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) [2022-03-01 17:07:22,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 751 transitions. [2022-03-01 17:07:22,015 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 751 transitions. Word has length 21 [2022-03-01 17:07:22,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:22,015 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 751 transitions. [2022-03-01 17:07:22,015 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) [2022-03-01 17:07:22,015 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 751 transitions. [2022-03-01 17:07:22,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:22,016 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:22,016 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] [2022-03-01 17:07:22,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-03-01 17:07:22,016 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:22,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:22,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1019481709, now seen corresponding path program 104 times [2022-03-01 17:07:22,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:22,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523324059] [2022-03-01 17:07:22,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:22,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:22,097 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:22,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523324059] [2022-03-01 17:07:22,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523324059] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:22,097 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:22,097 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:22,097 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511627763] [2022-03-01 17:07:22,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:22,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:22,097 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:22,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:22,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:22,097 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) [2022-03-01 17:07:22,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:22,145 INFO L93 Difference]: Finished difference Result 493 states and 1405 transitions. [2022-03-01 17:07:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:22,145 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 [2022-03-01 17:07:22,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:22,146 INFO L225 Difference]: With dead ends: 493 [2022-03-01 17:07:22,146 INFO L226 Difference]: Without dead ends: 406 [2022-03-01 17:07:22,146 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 [2022-03-01 17:07:22,147 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 [2022-03-01 17:07:22,147 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] [2022-03-01 17:07:22,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-03-01 17:07:22,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 238. [2022-03-01 17:07:22,150 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) [2022-03-01 17:07:22,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 727 transitions. [2022-03-01 17:07:22,150 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 727 transitions. Word has length 21 [2022-03-01 17:07:22,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:22,150 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 727 transitions. [2022-03-01 17:07:22,150 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) [2022-03-01 17:07:22,150 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 727 transitions. [2022-03-01 17:07:22,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:22,151 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:22,151 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] [2022-03-01 17:07:22,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-03-01 17:07:22,151 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:22,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:22,151 INFO L85 PathProgramCache]: Analyzing trace with hash 391113131, now seen corresponding path program 105 times [2022-03-01 17:07:22,151 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:22,151 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666330179] [2022-03-01 17:07:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:22,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:22,226 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:22,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666330179] [2022-03-01 17:07:22,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666330179] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:22,226 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:22,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:22,226 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44452619] [2022-03-01 17:07:22,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:22,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:22,227 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:22,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:22,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:22,227 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) [2022-03-01 17:07:22,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:22,279 INFO L93 Difference]: Finished difference Result 493 states and 1417 transitions. [2022-03-01 17:07:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:22,279 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 [2022-03-01 17:07:22,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:22,280 INFO L225 Difference]: With dead ends: 493 [2022-03-01 17:07:22,280 INFO L226 Difference]: Without dead ends: 406 [2022-03-01 17:07:22,280 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 [2022-03-01 17:07:22,280 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 [2022-03-01 17:07:22,280 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] [2022-03-01 17:07:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-03-01 17:07:22,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 250. [2022-03-01 17:07:22,283 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) [2022-03-01 17:07:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 759 transitions. [2022-03-01 17:07:22,284 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 759 transitions. Word has length 21 [2022-03-01 17:07:22,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:22,284 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 759 transitions. [2022-03-01 17:07:22,284 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) [2022-03-01 17:07:22,284 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 759 transitions. [2022-03-01 17:07:22,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:22,284 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:22,285 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] [2022-03-01 17:07:22,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-03-01 17:07:22,285 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:22,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:22,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2095510285, now seen corresponding path program 106 times [2022-03-01 17:07:22,285 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:22,285 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335352426] [2022-03-01 17:07:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:22,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:22,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:22,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335352426] [2022-03-01 17:07:22,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335352426] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:22,359 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:22,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:22,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062900584] [2022-03-01 17:07:22,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:22,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:22,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:22,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:22,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:22,360 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) [2022-03-01 17:07:22,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:22,412 INFO L93 Difference]: Finished difference Result 433 states and 1256 transitions. [2022-03-01 17:07:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:22,413 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 [2022-03-01 17:07:22,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:22,413 INFO L225 Difference]: With dead ends: 433 [2022-03-01 17:07:22,413 INFO L226 Difference]: Without dead ends: 330 [2022-03-01 17:07:22,413 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 [2022-03-01 17:07:22,414 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 [2022-03-01 17:07:22,414 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] [2022-03-01 17:07:22,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-03-01 17:07:22,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 238. [2022-03-01 17:07:22,417 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) [2022-03-01 17:07:22,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 723 transitions. [2022-03-01 17:07:22,417 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 723 transitions. Word has length 21 [2022-03-01 17:07:22,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:22,417 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 723 transitions. [2022-03-01 17:07:22,417 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) [2022-03-01 17:07:22,417 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 723 transitions. [2022-03-01 17:07:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:22,418 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:22,418 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] [2022-03-01 17:07:22,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-03-01 17:07:22,418 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:22,418 INFO L85 PathProgramCache]: Analyzing trace with hash -254934223, now seen corresponding path program 107 times [2022-03-01 17:07:22,418 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:22,418 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439614573] [2022-03-01 17:07:22,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:22,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:22,491 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:22,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439614573] [2022-03-01 17:07:22,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439614573] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:22,491 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:22,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:22,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147026239] [2022-03-01 17:07:22,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:22,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:22,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:22,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:22,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:22,492 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) [2022-03-01 17:07:22,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:22,544 INFO L93 Difference]: Finished difference Result 481 states and 1369 transitions. [2022-03-01 17:07:22,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:22,544 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 [2022-03-01 17:07:22,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:22,545 INFO L225 Difference]: With dead ends: 481 [2022-03-01 17:07:22,545 INFO L226 Difference]: Without dead ends: 402 [2022-03-01 17:07:22,545 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 [2022-03-01 17:07:22,545 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 [2022-03-01 17:07:22,545 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] [2022-03-01 17:07:22,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-03-01 17:07:22,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 246. [2022-03-01 17:07:22,549 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) [2022-03-01 17:07:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 743 transitions. [2022-03-01 17:07:22,549 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 743 transitions. Word has length 21 [2022-03-01 17:07:22,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:22,550 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 743 transitions. [2022-03-01 17:07:22,550 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) [2022-03-01 17:07:22,550 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 743 transitions. [2022-03-01 17:07:22,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:22,550 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:22,550 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] [2022-03-01 17:07:22,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-03-01 17:07:22,550 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:22,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:22,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1802856557, now seen corresponding path program 108 times [2022-03-01 17:07:22,551 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:22,551 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179487113] [2022-03-01 17:07:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:22,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:22,632 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:22,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179487113] [2022-03-01 17:07:22,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179487113] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:22,632 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:22,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:22,633 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130782767] [2022-03-01 17:07:22,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:22,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:22,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:22,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:22,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:22,633 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) [2022-03-01 17:07:22,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:22,684 INFO L93 Difference]: Finished difference Result 429 states and 1240 transitions. [2022-03-01 17:07:22,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:22,685 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 [2022-03-01 17:07:22,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:22,685 INFO L225 Difference]: With dead ends: 429 [2022-03-01 17:07:22,685 INFO L226 Difference]: Without dead ends: 326 [2022-03-01 17:07:22,686 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 [2022-03-01 17:07:22,686 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 [2022-03-01 17:07:22,686 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] [2022-03-01 17:07:22,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-03-01 17:07:22,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 234. [2022-03-01 17:07:22,689 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) [2022-03-01 17:07:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 713 transitions. [2022-03-01 17:07:22,690 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 713 transitions. Word has length 21 [2022-03-01 17:07:22,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:22,690 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 713 transitions. [2022-03-01 17:07:22,690 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) [2022-03-01 17:07:22,690 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 713 transitions. [2022-03-01 17:07:22,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:22,690 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:22,690 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] [2022-03-01 17:07:22,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-03-01 17:07:22,690 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:22,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash 231764395, now seen corresponding path program 109 times [2022-03-01 17:07:22,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:22,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835835750] [2022-03-01 17:07:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:22,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:22,761 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:22,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835835750] [2022-03-01 17:07:22,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835835750] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:22,761 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:22,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:22,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757738232] [2022-03-01 17:07:22,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:22,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:22,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:22,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:22,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:22,762 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) [2022-03-01 17:07:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:22,816 INFO L93 Difference]: Finished difference Result 479 states and 1364 transitions. [2022-03-01 17:07:22,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:22,816 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 [2022-03-01 17:07:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:22,817 INFO L225 Difference]: With dead ends: 479 [2022-03-01 17:07:22,817 INFO L226 Difference]: Without dead ends: 392 [2022-03-01 17:07:22,817 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 [2022-03-01 17:07:22,817 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 [2022-03-01 17:07:22,818 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] [2022-03-01 17:07:22,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-03-01 17:07:22,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 234. [2022-03-01 17:07:22,820 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) [2022-03-01 17:07:22,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 701 transitions. [2022-03-01 17:07:22,821 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 701 transitions. Word has length 21 [2022-03-01 17:07:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:22,821 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 701 transitions. [2022-03-01 17:07:22,821 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) [2022-03-01 17:07:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 701 transitions. [2022-03-01 17:07:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:22,822 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:22,822 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] [2022-03-01 17:07:22,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-03-01 17:07:22,822 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:22,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1701182579, now seen corresponding path program 110 times [2022-03-01 17:07:22,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:22,822 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713701536] [2022-03-01 17:07:22,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:22,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:22,900 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:22,900 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713701536] [2022-03-01 17:07:22,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713701536] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:22,900 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:22,900 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:22,900 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946053981] [2022-03-01 17:07:22,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:22,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:22,900 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:22,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:22,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:22,901 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) [2022-03-01 17:07:22,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:22,952 INFO L93 Difference]: Finished difference Result 485 states and 1369 transitions. [2022-03-01 17:07:22,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:22,953 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 [2022-03-01 17:07:22,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:22,953 INFO L225 Difference]: With dead ends: 485 [2022-03-01 17:07:22,953 INFO L226 Difference]: Without dead ends: 380 [2022-03-01 17:07:22,953 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 [2022-03-01 17:07:22,954 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 [2022-03-01 17:07:22,954 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] [2022-03-01 17:07:22,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-03-01 17:07:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 222. [2022-03-01 17:07:22,956 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) [2022-03-01 17:07:22,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 663 transitions. [2022-03-01 17:07:22,957 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 663 transitions. Word has length 21 [2022-03-01 17:07:22,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:22,957 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 663 transitions. [2022-03-01 17:07:22,957 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) [2022-03-01 17:07:22,957 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 663 transitions. [2022-03-01 17:07:22,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:22,957 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:22,957 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] [2022-03-01 17:07:22,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-03-01 17:07:22,958 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:22,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:22,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1312827021, now seen corresponding path program 111 times [2022-03-01 17:07:22,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:22,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563101286] [2022-03-01 17:07:22,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:22,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:23,060 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:23,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563101286] [2022-03-01 17:07:23,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563101286] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:23,060 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:23,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:23,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445462654] [2022-03-01 17:07:23,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:23,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:23,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:23,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:23,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:23,061 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) [2022-03-01 17:07:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:23,112 INFO L93 Difference]: Finished difference Result 441 states and 1233 transitions. [2022-03-01 17:07:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:23,112 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 [2022-03-01 17:07:23,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:23,113 INFO L225 Difference]: With dead ends: 441 [2022-03-01 17:07:23,113 INFO L226 Difference]: Without dead ends: 354 [2022-03-01 17:07:23,113 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 [2022-03-01 17:07:23,113 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 [2022-03-01 17:07:23,113 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] [2022-03-01 17:07:23,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-01 17:07:23,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 198. [2022-03-01 17:07:23,116 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) [2022-03-01 17:07:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 575 transitions. [2022-03-01 17:07:23,116 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 575 transitions. Word has length 21 [2022-03-01 17:07:23,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:23,117 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 575 transitions. [2022-03-01 17:07:23,117 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) [2022-03-01 17:07:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 575 transitions. [2022-03-01 17:07:23,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:23,117 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:23,117 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] [2022-03-01 17:07:23,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-03-01 17:07:23,117 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:23,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:23,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1299483405, now seen corresponding path program 112 times [2022-03-01 17:07:23,118 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:23,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474399497] [2022-03-01 17:07:23,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:23,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:23,206 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:23,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474399497] [2022-03-01 17:07:23,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474399497] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:23,207 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:23,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:23,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452479153] [2022-03-01 17:07:23,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:23,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:23,207 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:23,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:23,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:23,207 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) [2022-03-01 17:07:23,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:23,257 INFO L93 Difference]: Finished difference Result 381 states and 1072 transitions. [2022-03-01 17:07:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:23,257 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 [2022-03-01 17:07:23,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:23,258 INFO L225 Difference]: With dead ends: 381 [2022-03-01 17:07:23,258 INFO L226 Difference]: Without dead ends: 278 [2022-03-01 17:07:23,258 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 [2022-03-01 17:07:23,258 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 [2022-03-01 17:07:23,258 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] [2022-03-01 17:07:23,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-03-01 17:07:23,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 186. [2022-03-01 17:07:23,263 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) [2022-03-01 17:07:23,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 537 transitions. [2022-03-01 17:07:23,264 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 537 transitions. Word has length 21 [2022-03-01 17:07:23,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:23,264 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 537 transitions. [2022-03-01 17:07:23,264 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) [2022-03-01 17:07:23,264 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 537 transitions. [2022-03-01 17:07:23,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:23,264 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:23,264 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] [2022-03-01 17:07:23,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-03-01 17:07:23,264 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:23,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:23,265 INFO L85 PathProgramCache]: Analyzing trace with hash -158057361, now seen corresponding path program 113 times [2022-03-01 17:07:23,265 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:23,265 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217151583] [2022-03-01 17:07:23,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:23,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:23,336 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:23,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217151583] [2022-03-01 17:07:23,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217151583] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:23,336 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:23,336 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:23,336 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374134765] [2022-03-01 17:07:23,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:23,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:23,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:23,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:23,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:23,337 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) [2022-03-01 17:07:23,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:23,395 INFO L93 Difference]: Finished difference Result 385 states and 1090 transitions. [2022-03-01 17:07:23,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:23,395 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 [2022-03-01 17:07:23,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:23,396 INFO L225 Difference]: With dead ends: 385 [2022-03-01 17:07:23,396 INFO L226 Difference]: Without dead ends: 292 [2022-03-01 17:07:23,396 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 [2022-03-01 17:07:23,396 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 [2022-03-01 17:07:23,396 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] [2022-03-01 17:07:23,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-03-01 17:07:23,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 200. [2022-03-01 17:07:23,398 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) [2022-03-01 17:07:23,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 574 transitions. [2022-03-01 17:07:23,399 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 574 transitions. Word has length 21 [2022-03-01 17:07:23,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:23,399 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 574 transitions. [2022-03-01 17:07:23,399 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) [2022-03-01 17:07:23,399 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 574 transitions. [2022-03-01 17:07:23,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:23,399 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:23,399 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] [2022-03-01 17:07:23,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-03-01 17:07:23,399 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:23,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:23,400 INFO L85 PathProgramCache]: Analyzing trace with hash -486440243, now seen corresponding path program 114 times [2022-03-01 17:07:23,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:23,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22158241] [2022-03-01 17:07:23,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:23,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:23,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:23,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22158241] [2022-03-01 17:07:23,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22158241] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:23,474 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:23,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:23,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171830703] [2022-03-01 17:07:23,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:23,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:23,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:23,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:23,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:23,475 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) [2022-03-01 17:07:23,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:23,523 INFO L93 Difference]: Finished difference Result 291 states and 822 transitions. [2022-03-01 17:07:23,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:23,523 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 [2022-03-01 17:07:23,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:23,523 INFO L225 Difference]: With dead ends: 291 [2022-03-01 17:07:23,523 INFO L226 Difference]: Without dead ends: 180 [2022-03-01 17:07:23,524 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 [2022-03-01 17:07:23,524 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 [2022-03-01 17:07:23,524 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] [2022-03-01 17:07:23,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-03-01 17:07:23,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-03-01 17:07:23,526 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) [2022-03-01 17:07:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 522 transitions. [2022-03-01 17:07:23,526 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 522 transitions. Word has length 21 [2022-03-01 17:07:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:23,526 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 522 transitions. [2022-03-01 17:07:23,526 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) [2022-03-01 17:07:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 522 transitions. [2022-03-01 17:07:23,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:23,526 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:23,527 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] [2022-03-01 17:07:23,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-03-01 17:07:23,527 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:23,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:23,527 INFO L85 PathProgramCache]: Analyzing trace with hash 367880497, now seen corresponding path program 115 times [2022-03-01 17:07:23,527 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:23,527 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852628683] [2022-03-01 17:07:23,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:23,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:23,604 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:23,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852628683] [2022-03-01 17:07:23,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852628683] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:23,604 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:23,604 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:23,604 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162217973] [2022-03-01 17:07:23,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:23,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:23,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:23,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:23,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:23,605 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) [2022-03-01 17:07:23,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:23,644 INFO L93 Difference]: Finished difference Result 323 states and 891 transitions. [2022-03-01 17:07:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:23,644 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 [2022-03-01 17:07:23,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:23,645 INFO L225 Difference]: With dead ends: 323 [2022-03-01 17:07:23,645 INFO L226 Difference]: Without dead ends: 244 [2022-03-01 17:07:23,645 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 [2022-03-01 17:07:23,645 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 [2022-03-01 17:07:23,645 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] [2022-03-01 17:07:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-03-01 17:07:23,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 180. [2022-03-01 17:07:23,647 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) [2022-03-01 17:07:23,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 514 transitions. [2022-03-01 17:07:23,648 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 514 transitions. Word has length 21 [2022-03-01 17:07:23,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:23,648 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 514 transitions. [2022-03-01 17:07:23,648 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) [2022-03-01 17:07:23,648 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 514 transitions. [2022-03-01 17:07:23,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:23,648 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:23,648 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] [2022-03-01 17:07:23,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-03-01 17:07:23,648 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:23,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:23,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1201048045, now seen corresponding path program 116 times [2022-03-01 17:07:23,649 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:23,649 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674338016] [2022-03-01 17:07:23,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:23,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:23,721 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:23,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674338016] [2022-03-01 17:07:23,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674338016] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:23,721 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:23,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:23,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025396766] [2022-03-01 17:07:23,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:23,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:23,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:23,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:23,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:23,722 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) [2022-03-01 17:07:23,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:23,770 INFO L93 Difference]: Finished difference Result 337 states and 928 transitions. [2022-03-01 17:07:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:23,770 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 [2022-03-01 17:07:23,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:23,770 INFO L225 Difference]: With dead ends: 337 [2022-03-01 17:07:23,770 INFO L226 Difference]: Without dead ends: 236 [2022-03-01 17:07:23,770 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 [2022-03-01 17:07:23,771 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 [2022-03-01 17:07:23,771 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] [2022-03-01 17:07:23,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-03-01 17:07:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 172. [2022-03-01 17:07:23,773 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) [2022-03-01 17:07:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 490 transitions. [2022-03-01 17:07:23,773 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 490 transitions. Word has length 21 [2022-03-01 17:07:23,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:23,773 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 490 transitions. [2022-03-01 17:07:23,773 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) [2022-03-01 17:07:23,773 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 490 transitions. [2022-03-01 17:07:23,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:23,773 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:23,773 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] [2022-03-01 17:07:23,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-03-01 17:07:23,774 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:23,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:23,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1448943123, now seen corresponding path program 117 times [2022-03-01 17:07:23,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:23,774 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732223125] [2022-03-01 17:07:23,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:23,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:23,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:23,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732223125] [2022-03-01 17:07:23,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732223125] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:23,852 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:23,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:23,852 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873878521] [2022-03-01 17:07:23,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:23,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:23,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:23,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:23,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:23,853 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) [2022-03-01 17:07:23,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:23,894 INFO L93 Difference]: Finished difference Result 299 states and 811 transitions. [2022-03-01 17:07:23,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:23,895 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 [2022-03-01 17:07:23,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:23,895 INFO L225 Difference]: With dead ends: 299 [2022-03-01 17:07:23,895 INFO L226 Difference]: Without dead ends: 220 [2022-03-01 17:07:23,895 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 [2022-03-01 17:07:23,895 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 [2022-03-01 17:07:23,896 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] [2022-03-01 17:07:23,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-03-01 17:07:23,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 156. [2022-03-01 17:07:23,897 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) [2022-03-01 17:07:23,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 434 transitions. [2022-03-01 17:07:23,898 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 434 transitions. Word has length 21 [2022-03-01 17:07:23,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:23,898 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 434 transitions. [2022-03-01 17:07:23,898 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) [2022-03-01 17:07:23,898 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 434 transitions. [2022-03-01 17:07:23,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:23,898 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:23,898 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] [2022-03-01 17:07:23,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-03-01 17:07:23,898 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:23,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:23,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1816719981, now seen corresponding path program 118 times [2022-03-01 17:07:23,899 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:23,899 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731850663] [2022-03-01 17:07:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:23,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:23,979 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:23,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731850663] [2022-03-01 17:07:23,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731850663] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:23,980 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:23,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:23,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464648266] [2022-03-01 17:07:23,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:23,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:23,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:23,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:23,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:23,980 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) [2022-03-01 17:07:24,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:24,027 INFO L93 Difference]: Finished difference Result 247 states and 682 transitions. [2022-03-01 17:07:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:24,027 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 [2022-03-01 17:07:24,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:24,028 INFO L225 Difference]: With dead ends: 247 [2022-03-01 17:07:24,028 INFO L226 Difference]: Without dead ends: 148 [2022-03-01 17:07:24,028 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 [2022-03-01 17:07:24,028 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 [2022-03-01 17:07:24,028 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] [2022-03-01 17:07:24,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-03-01 17:07:24,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-03-01 17:07:24,030 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) [2022-03-01 17:07:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 410 transitions. [2022-03-01 17:07:24,030 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 410 transitions. Word has length 21 [2022-03-01 17:07:24,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:24,030 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 410 transitions. [2022-03-01 17:07:24,030 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) [2022-03-01 17:07:24,030 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 410 transitions. [2022-03-01 17:07:24,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:24,031 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:24,031 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] [2022-03-01 17:07:24,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-03-01 17:07:24,031 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:24,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:24,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1599240693, now seen corresponding path program 119 times [2022-03-01 17:07:24,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:24,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636361196] [2022-03-01 17:07:24,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:24,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:24,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:24,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:24,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636361196] [2022-03-01 17:07:24,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636361196] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:24,115 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:24,115 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:24,115 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317456751] [2022-03-01 17:07:24,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:24,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:24,116 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:24,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:24,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:24,116 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) [2022-03-01 17:07:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:24,160 INFO L93 Difference]: Finished difference Result 211 states and 570 transitions. [2022-03-01 17:07:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:24,160 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 [2022-03-01 17:07:24,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:24,161 INFO L225 Difference]: With dead ends: 211 [2022-03-01 17:07:24,161 INFO L226 Difference]: Without dead ends: 118 [2022-03-01 17:07:24,161 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 [2022-03-01 17:07:24,161 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 [2022-03-01 17:07:24,161 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] [2022-03-01 17:07:24,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-03-01 17:07:24,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-03-01 17:07:24,162 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) [2022-03-01 17:07:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 303 transitions. [2022-03-01 17:07:24,163 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 303 transitions. Word has length 21 [2022-03-01 17:07:24,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:24,163 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 303 transitions. [2022-03-01 17:07:24,163 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) [2022-03-01 17:07:24,163 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 303 transitions. [2022-03-01 17:07:24,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:24,163 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:24,163 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] [2022-03-01 17:07:24,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-03-01 17:07:24,163 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2022-03-01 17:07:24,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:24,163 INFO L85 PathProgramCache]: Analyzing trace with hash -444096301, now seen corresponding path program 120 times [2022-03-01 17:07:24,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:24,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364588939] [2022-03-01 17:07:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:24,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:24,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:24,239 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:24,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364588939] [2022-03-01 17:07:24,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364588939] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:07:24,239 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:07:24,239 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 17:07:24,239 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813674268] [2022-03-01 17:07:24,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:07:24,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 17:07:24,240 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:24,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 17:07:24,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-01 17:07:24,240 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) [2022-03-01 17:07:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:24,281 INFO L93 Difference]: Finished difference Result 117 states and 302 transitions. [2022-03-01 17:07:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 17:07:24,281 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 [2022-03-01 17:07:24,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:24,281 INFO L225 Difference]: With dead ends: 117 [2022-03-01 17:07:24,281 INFO L226 Difference]: Without dead ends: 0 [2022-03-01 17:07:24,281 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 [2022-03-01 17:07:24,281 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 [2022-03-01 17:07:24,281 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] [2022-03-01 17:07:24,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-01 17:07:24,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-01 17:07:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:07:24,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-01 17:07:24,282 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-03-01 17:07:24,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:24,282 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-01 17:07:24,282 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) [2022-03-01 17:07:24,282 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-01 17:07:24,282 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-01 17:07:24,284 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2022-03-01 17:07:24,284 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 6 remaining) [2022-03-01 17:07:24,284 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 6 remaining) [2022-03-01 17:07:24,284 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (2 of 6 remaining) [2022-03-01 17:07:24,285 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (1 of 6 remaining) [2022-03-01 17:07:24,285 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION (0 of 6 remaining) [2022-03-01 17:07:24,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-03-01 17:07:24,287 INFO L732 BasicCegarLoop]: Path program histogram: [120, 1, 1, 1, 1] [2022-03-01 17:07:24,288 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 17:07:24,288 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 17:07:24,290 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 05:07:24 BasicIcfg [2022-03-01 17:07:24,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 17:07:24,290 INFO L158 Benchmark]: Toolchain (without parser) took 21863.98ms. Allocated memory was 173.0MB in the beginning and 333.4MB in the end (delta: 160.4MB). Free memory was 137.4MB in the beginning and 141.2MB in the end (delta: -3.8MB). Peak memory consumption was 158.2MB. Max. memory is 8.0GB. [2022-03-01 17:07:24,290 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 173.0MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 17:07:24,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.58ms. Allocated memory is still 173.0MB. Free memory was 137.4MB in the beginning and 135.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 17:07:24,290 INFO L158 Benchmark]: Boogie Preprocessor took 12.87ms. Allocated memory is still 173.0MB. Free memory was 135.9MB in the beginning and 135.0MB in the end (delta: 908.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 17:07:24,290 INFO L158 Benchmark]: RCFGBuilder took 169.45ms. Allocated memory is still 173.0MB. Free memory was 134.8MB in the beginning and 126.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-01 17:07:24,290 INFO L158 Benchmark]: TraceAbstraction took 21652.11ms. Allocated memory was 173.0MB in the beginning and 333.4MB in the end (delta: 160.4MB). Free memory was 126.1MB in the beginning and 141.2MB in the end (delta: -15.2MB). Peak memory consumption was 145.6MB. Max. memory is 8.0GB. [2022-03-01 17:07:24,291 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 173.0MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.58ms. Allocated memory is still 173.0MB. Free memory was 137.4MB in the beginning and 135.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.87ms. Allocated memory is still 173.0MB. Free memory was 135.9MB in the beginning and 135.0MB in the end (delta: 908.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 169.45ms. Allocated memory is still 173.0MB. Free memory was 134.8MB in the beginning and 126.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 21652.11ms. Allocated memory was 173.0MB in the beginning and 333.4MB in the end (delta: 160.4MB). Free memory was 126.1MB in the beginning and 141.2MB in the end (delta: -15.2MB). Peak memory consumption was 145.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 21.5s, OverallIterations: 124, TraceHistogramMax: 1, PathProgramHistogramMax: 120, EmptinessCheckTime: 0.1s, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8969 SdHoareTripleChecker+Valid, 6.1s 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, 6.3s 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: 1.2s AutomataMinimizationTime, 124 MinimizatonAttempts, 38456 StatesRemovedByMinimization, 116 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.9s 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! [2022-03-01 17:07:24,324 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...