/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loop-lit/hh2012-ex3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 18:02:20,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 18:02:20,440 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 18:02:20,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 18:02:20,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 18:02:20,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 18:02:20,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 18:02:20,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 18:02:20,464 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 18:02:20,464 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 18:02:20,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 18:02:20,465 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 18:02:20,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 18:02:20,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 18:02:20,466 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 18:02:20,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 18:02:20,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 18:02:20,467 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 18:02:20,467 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 18:02:20,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 18:02:20,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 18:02:20,468 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 18:02:20,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 18:02:20,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 18:02:20,469 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 18:02:20,470 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 18:02:20,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 18:02:20,470 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 18:02:20,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 18:02:20,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 18:02:20,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 18:02:20,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 18:02:20,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 18:02:20,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 18:02:20,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 18:02:20,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 18:02:20,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 18:02:20,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 18:02:20,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 18:02:20,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 18:02:20,473 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 18:02:20,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 18:02:20,473 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 18:02:20,473 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 18:02:20,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 18:02:20,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 18:02:20,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 18:02:20,684 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 18:02:20,684 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 18:02:20,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hh2012-ex3.i [2023-12-19 18:02:21,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 18:02:22,059 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 18:02:22,060 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hh2012-ex3.i [2023-12-19 18:02:22,067 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbee988b8/3063dad682014c16839a3a8a3ac15e6b/FLAGc21666158 [2023-12-19 18:02:22,078 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbee988b8/3063dad682014c16839a3a8a3ac15e6b [2023-12-19 18:02:22,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 18:02:22,081 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 18:02:22,082 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 18:02:22,082 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 18:02:22,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 18:02:22,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:02:22" (1/1) ... [2023-12-19 18:02:22,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@153941de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:22, skipping insertion in model container [2023-12-19 18:02:22,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:02:22" (1/1) ... [2023-12-19 18:02:22,112 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 18:02:22,239 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hh2012-ex3.i[799,812] [2023-12-19 18:02:22,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:02:22,257 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 18:02:22,267 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hh2012-ex3.i[799,812] [2023-12-19 18:02:22,271 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:02:22,281 INFO L206 MainTranslator]: Completed translation [2023-12-19 18:02:22,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:22 WrapperNode [2023-12-19 18:02:22,282 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 18:02:22,283 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 18:02:22,283 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 18:02:22,283 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 18:02:22,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:22" (1/1) ... [2023-12-19 18:02:22,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:22" (1/1) ... [2023-12-19 18:02:22,306 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-12-19 18:02:22,307 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 18:02:22,307 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 18:02:22,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 18:02:22,307 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 18:02:22,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:22" (1/1) ... [2023-12-19 18:02:22,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:22" (1/1) ... [2023-12-19 18:02:22,314 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:22" (1/1) ... [2023-12-19 18:02:22,322 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 18:02:22,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:22" (1/1) ... [2023-12-19 18:02:22,322 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:22" (1/1) ... [2023-12-19 18:02:22,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:22" (1/1) ... [2023-12-19 18:02:22,328 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:22" (1/1) ... [2023-12-19 18:02:22,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:22" (1/1) ... [2023-12-19 18:02:22,329 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:22" (1/1) ... [2023-12-19 18:02:22,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 18:02:22,331 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 18:02:22,331 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 18:02:22,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 18:02:22,334 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:22" (1/1) ... [2023-12-19 18:02:22,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 18:02:22,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:02:22,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 18:02:22,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 18:02:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 18:02:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 18:02:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 18:02:22,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 18:02:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-19 18:02:22,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-19 18:02:22,446 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 18:02:22,448 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 18:02:22,536 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 18:02:22,552 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 18:02:22,553 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 18:02:22,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:02:22 BoogieIcfgContainer [2023-12-19 18:02:22,553 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 18:02:22,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 18:02:22,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 18:02:22,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 18:02:22,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:02:22" (1/3) ... [2023-12-19 18:02:22,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac2063e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:02:22, skipping insertion in model container [2023-12-19 18:02:22,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:22" (2/3) ... [2023-12-19 18:02:22,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac2063e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:02:22, skipping insertion in model container [2023-12-19 18:02:22,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:02:22" (3/3) ... [2023-12-19 18:02:22,560 INFO L112 eAbstractionObserver]: Analyzing ICFG hh2012-ex3.i [2023-12-19 18:02:22,574 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 18:02:22,574 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 18:02:22,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 18:02:22,610 INFO L357 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@57130aef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 18:02:22,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 18:02:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 18:02:22,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-19 18:02:22,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:22,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:02:22,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:22,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:22,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1998107271, now seen corresponding path program 1 times [2023-12-19 18:02:22,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:22,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742147060] [2023-12-19 18:02:22,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:22,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:22,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:22,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742147060] [2023-12-19 18:02:22,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742147060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:02:22,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:02:22,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 18:02:22,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357637504] [2023-12-19 18:02:22,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:02:22,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 18:02:22,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:22,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 18:02:22,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 18:02:22,825 INFO L87 Difference]: Start difference. First operand has 20 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:22,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:22,901 INFO L93 Difference]: Finished difference Result 40 states and 72 transitions. [2023-12-19 18:02:22,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 18:02:22,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-19 18:02:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:22,908 INFO L225 Difference]: With dead ends: 40 [2023-12-19 18:02:22,908 INFO L226 Difference]: Without dead ends: 19 [2023-12-19 18:02:22,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 18:02:22,913 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:22,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 18:02:22,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-19 18:02:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-19 18:02:22,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 18:02:22,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2023-12-19 18:02:22,943 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 27 transitions. Word has length 7 [2023-12-19 18:02:22,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:22,944 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 27 transitions. [2023-12-19 18:02:22,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 27 transitions. [2023-12-19 18:02:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-19 18:02:22,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:22,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:02:22,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 18:02:22,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:22,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:22,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1996498557, now seen corresponding path program 1 times [2023-12-19 18:02:22,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:22,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417207000] [2023-12-19 18:02:22,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:22,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:23,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:23,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417207000] [2023-12-19 18:02:23,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417207000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:02:23,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:02:23,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 18:02:23,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704341618] [2023-12-19 18:02:23,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:02:23,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 18:02:23,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:23,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 18:02:23,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 18:02:23,081 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:23,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:23,175 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2023-12-19 18:02:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 18:02:23,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-19 18:02:23,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:23,178 INFO L225 Difference]: With dead ends: 25 [2023-12-19 18:02:23,178 INFO L226 Difference]: Without dead ends: 23 [2023-12-19 18:02:23,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 18:02:23,180 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:23,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 67 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 18:02:23,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-19 18:02:23,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-19 18:02:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 18:02:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2023-12-19 18:02:23,203 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 7 [2023-12-19 18:02:23,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:23,203 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2023-12-19 18:02:23,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:23,203 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2023-12-19 18:02:23,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-19 18:02:23,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:23,204 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:02:23,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 18:02:23,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:23,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:23,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2106031398, now seen corresponding path program 1 times [2023-12-19 18:02:23,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:23,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083785826] [2023-12-19 18:02:23,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:23,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:23,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 18:02:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:23,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:23,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083785826] [2023-12-19 18:02:23,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083785826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:02:23,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:02:23,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 18:02:23,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183179047] [2023-12-19 18:02:23,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:02:23,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 18:02:23,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:23,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 18:02:23,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 18:02:23,334 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-19 18:02:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:23,422 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2023-12-19 18:02:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 18:02:23,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-19 18:02:23,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:23,426 INFO L225 Difference]: With dead ends: 41 [2023-12-19 18:02:23,426 INFO L226 Difference]: Without dead ends: 39 [2023-12-19 18:02:23,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 18:02:23,430 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:23,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 95 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 18:02:23,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-19 18:02:23,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2023-12-19 18:02:23,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 18:02:23,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 49 transitions. [2023-12-19 18:02:23,440 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 49 transitions. Word has length 12 [2023-12-19 18:02:23,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:23,441 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 49 transitions. [2023-12-19 18:02:23,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-19 18:02:23,441 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 49 transitions. [2023-12-19 18:02:23,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-19 18:02:23,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:23,442 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:02:23,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 18:02:23,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:23,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:23,443 INFO L85 PathProgramCache]: Analyzing trace with hash -2121220317, now seen corresponding path program 1 times [2023-12-19 18:02:23,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:23,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571598515] [2023-12-19 18:02:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:23,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:23,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 18:02:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 18:02:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 18:02:23,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:23,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571598515] [2023-12-19 18:02:23,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571598515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:02:23,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:02:23,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 18:02:23,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871199420] [2023-12-19 18:02:23,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:02:23,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 18:02:23,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:23,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 18:02:23,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 18:02:23,563 INFO L87 Difference]: Start difference. First operand 36 states and 49 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 18:02:23,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:23,632 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2023-12-19 18:02:23,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 18:02:23,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-12-19 18:02:23,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:23,633 INFO L225 Difference]: With dead ends: 45 [2023-12-19 18:02:23,633 INFO L226 Difference]: Without dead ends: 43 [2023-12-19 18:02:23,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 18:02:23,642 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:23,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 81 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:02:23,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-19 18:02:23,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2023-12-19 18:02:23,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-19 18:02:23,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2023-12-19 18:02:23,655 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 17 [2023-12-19 18:02:23,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:23,656 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2023-12-19 18:02:23,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 18:02:23,657 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2023-12-19 18:02:23,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-19 18:02:23,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:23,659 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:02:23,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 18:02:23,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:23,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:23,660 INFO L85 PathProgramCache]: Analyzing trace with hash 905923334, now seen corresponding path program 1 times [2023-12-19 18:02:23,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:23,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940422885] [2023-12-19 18:02:23,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:23,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:23,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 18:02:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:23,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 18:02:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:23,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 18:02:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 18:02:23,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:23,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940422885] [2023-12-19 18:02:23,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940422885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:02:23,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:02:23,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 18:02:23,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339687166] [2023-12-19 18:02:23,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:02:23,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 18:02:23,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:23,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 18:02:23,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 18:02:23,773 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-19 18:02:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:23,844 INFO L93 Difference]: Finished difference Result 88 states and 119 transitions. [2023-12-19 18:02:23,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 18:02:23,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-12-19 18:02:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:23,850 INFO L225 Difference]: With dead ends: 88 [2023-12-19 18:02:23,850 INFO L226 Difference]: Without dead ends: 55 [2023-12-19 18:02:23,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 18:02:23,853 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:23,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 79 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:02:23,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-19 18:02:23,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-12-19 18:02:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 18:02:23,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 75 transitions. [2023-12-19 18:02:23,873 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 75 transitions. Word has length 22 [2023-12-19 18:02:23,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:23,874 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 75 transitions. [2023-12-19 18:02:23,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-19 18:02:23,874 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 75 transitions. [2023-12-19 18:02:23,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 18:02:23,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:23,875 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-19 18:02:23,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 18:02:23,875 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:23,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:23,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1205745070, now seen corresponding path program 1 times [2023-12-19 18:02:23,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:23,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725866207] [2023-12-19 18:02:23,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:23,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:23,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 18:02:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:23,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 18:02:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 18:02:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 18:02:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 18:02:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 18:02:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 18:02:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-19 18:02:24,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:24,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725866207] [2023-12-19 18:02:24,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725866207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:02:24,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:02:24,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 18:02:24,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003330928] [2023-12-19 18:02:24,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:02:24,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 18:02:24,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:24,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 18:02:24,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 18:02:24,042 INFO L87 Difference]: Start difference. First operand 55 states and 75 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 18:02:24,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:24,096 INFO L93 Difference]: Finished difference Result 61 states and 80 transitions. [2023-12-19 18:02:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 18:02:24,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-12-19 18:02:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:24,098 INFO L225 Difference]: With dead ends: 61 [2023-12-19 18:02:24,099 INFO L226 Difference]: Without dead ends: 59 [2023-12-19 18:02:24,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 18:02:24,100 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:24,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 62 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:02:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-19 18:02:24,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-19 18:02:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 18:02:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2023-12-19 18:02:24,120 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 43 [2023-12-19 18:02:24,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:24,120 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2023-12-19 18:02:24,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 18:02:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2023-12-19 18:02:24,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-19 18:02:24,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:24,123 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:02:24,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 18:02:24,123 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:24,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:24,124 INFO L85 PathProgramCache]: Analyzing trace with hash 296191259, now seen corresponding path program 1 times [2023-12-19 18:02:24,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:24,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844799448] [2023-12-19 18:02:24,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:24,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 18:02:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 18:02:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 18:02:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 18:02:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 18:02:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 18:02:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 18:02:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-19 18:02:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 18:02:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 18:02:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 18:02:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 18:02:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 18:02:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 18:02:24,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:24,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844799448] [2023-12-19 18:02:24,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844799448] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:02:24,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562293945] [2023-12-19 18:02:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:24,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:24,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:02:24,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:02:24,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 18:02:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:24,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 18:02:24,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:02:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 184 proven. 7 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-19 18:02:24,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:02:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 18:02:24,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562293945] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:02:24,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:02:24,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-12-19 18:02:24,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502735692] [2023-12-19 18:02:24,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:02:24,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 18:02:24,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:24,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 18:02:24,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-19 18:02:24,537 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-12-19 18:02:24,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:24,589 INFO L93 Difference]: Finished difference Result 125 states and 174 transitions. [2023-12-19 18:02:24,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 18:02:24,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 77 [2023-12-19 18:02:24,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:24,592 INFO L225 Difference]: With dead ends: 125 [2023-12-19 18:02:24,592 INFO L226 Difference]: Without dead ends: 79 [2023-12-19 18:02:24,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-19 18:02:24,596 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:24,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:02:24,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-19 18:02:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-19 18:02:24,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 states have internal predecessors, (36), 39 states have call successors, (39), 6 states have call predecessors, (39), 6 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-19 18:02:24,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 114 transitions. [2023-12-19 18:02:24,614 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 114 transitions. Word has length 77 [2023-12-19 18:02:24,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:24,614 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 114 transitions. [2023-12-19 18:02:24,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-12-19 18:02:24,614 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 114 transitions. [2023-12-19 18:02:24,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 18:02:24,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:24,616 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:02:24,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 18:02:24,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:24,822 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:24,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:24,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1649128037, now seen corresponding path program 2 times [2023-12-19 18:02:24,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:24,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990650436] [2023-12-19 18:02:24,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:24,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 18:02:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 18:02:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 18:02:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 18:02:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 18:02:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 18:02:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 18:02:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-19 18:02:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 18:02:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 18:02:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 18:02:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 18:02:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 18:02:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 18:02:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 18:02:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 18:02:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 18:02:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 18:02:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 18:02:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 18:02:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 18:02:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2023-12-19 18:02:25,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:25,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990650436] [2023-12-19 18:02:25,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990650436] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:02:25,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313234488] [2023-12-19 18:02:25,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:02:25,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:25,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:02:25,127 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:02:25,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 18:02:25,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:02:25,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:02:25,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 18:02:25,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:02:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 49 proven. 41 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-19 18:02:25,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:02:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2023-12-19 18:02:25,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313234488] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 18:02:25,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 18:02:25,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 13] total 22 [2023-12-19 18:02:25,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718146874] [2023-12-19 18:02:25,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:02:25,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 18:02:25,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:25,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 18:02:25,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2023-12-19 18:02:25,683 INFO L87 Difference]: Start difference. First operand 79 states and 114 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 18:02:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:25,749 INFO L93 Difference]: Finished difference Result 85 states and 119 transitions. [2023-12-19 18:02:25,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 18:02:25,750 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 119 [2023-12-19 18:02:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:25,751 INFO L225 Difference]: With dead ends: 85 [2023-12-19 18:02:25,751 INFO L226 Difference]: Without dead ends: 83 [2023-12-19 18:02:25,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 267 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2023-12-19 18:02:25,752 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:25,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 101 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:02:25,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-19 18:02:25,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-19 18:02:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 37 states have internal predecessors, (39), 39 states have call successors, (39), 7 states have call predecessors, (39), 7 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-19 18:02:25,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2023-12-19 18:02:25,765 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 119 [2023-12-19 18:02:25,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:25,765 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2023-12-19 18:02:25,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 18:02:25,766 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2023-12-19 18:02:25,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-19 18:02:25,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:25,767 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:02:25,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 18:02:25,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 18:02:25,974 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:25,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:25,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1418522574, now seen corresponding path program 3 times [2023-12-19 18:02:25,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:25,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200400084] [2023-12-19 18:02:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:25,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 18:02:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 18:02:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 18:02:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 18:02:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 18:02:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 18:02:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 18:02:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-19 18:02:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 18:02:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 18:02:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 18:02:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 18:02:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 18:02:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 18:02:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 18:02:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 18:02:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 18:02:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 18:02:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 18:02:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 18:02:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 18:02:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 18:02:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 48 proven. 48 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 18:02:26,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:26,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200400084] [2023-12-19 18:02:26,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200400084] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:02:26,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321290806] [2023-12-19 18:02:26,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 18:02:26,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:26,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:02:26,232 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:02:26,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 18:02:26,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-19 18:02:26,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:02:26,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 18:02:26,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:02:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2023-12-19 18:02:26,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 18:02:26,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321290806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:02:26,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 18:02:26,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-12-19 18:02:26,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627065563] [2023-12-19 18:02:26,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:02:26,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 18:02:26,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:26,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 18:02:26,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-12-19 18:02:26,376 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 18:02:26,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:26,424 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2023-12-19 18:02:26,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 18:02:26,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 124 [2023-12-19 18:02:26,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:26,427 INFO L225 Difference]: With dead ends: 97 [2023-12-19 18:02:26,427 INFO L226 Difference]: Without dead ends: 95 [2023-12-19 18:02:26,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-12-19 18:02:26,429 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:26,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 86 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:02:26,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-19 18:02:26,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-19 18:02:26,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 46 states have internal predecessors, (48), 39 states have call successors, (39), 10 states have call predecessors, (39), 10 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-19 18:02:26,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 126 transitions. [2023-12-19 18:02:26,449 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 126 transitions. Word has length 124 [2023-12-19 18:02:26,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:26,450 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 126 transitions. [2023-12-19 18:02:26,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 18:02:26,450 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 126 transitions. [2023-12-19 18:02:26,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 18:02:26,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:26,457 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 26, 6, 6, 6, 6, 6, 6, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:02:26,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 18:02:26,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:26,658 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:26,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:26,658 INFO L85 PathProgramCache]: Analyzing trace with hash 883710092, now seen corresponding path program 4 times [2023-12-19 18:02:26,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:26,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763400060] [2023-12-19 18:02:26,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:26,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-19 18:02:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 18:02:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 18:02:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 18:02:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-19 18:02:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 18:02:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 18:02:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-19 18:02:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-19 18:02:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 18:02:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 18:02:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 18:02:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 18:02:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 18:02:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 18:02:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 18:02:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 18:02:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 18:02:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 18:02:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 18:02:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 18:02:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 18:02:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 18:02:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 18:02:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-19 18:02:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-19 18:02:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 56 proven. 70 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2023-12-19 18:02:26,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:26,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763400060] [2023-12-19 18:02:26,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763400060] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:02:26,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810746884] [2023-12-19 18:02:26,939 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 18:02:26,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:26,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:02:26,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:02:26,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 18:02:27,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 18:02:27,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:02:27,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 18:02:27,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:02:27,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 97 proven. 76 refuted. 0 times theorem prover too weak. 1256 trivial. 0 not checked. [2023-12-19 18:02:27,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:02:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 1339 trivial. 0 not checked. [2023-12-19 18:02:27,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810746884] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 18:02:27,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 18:02:27,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 10] total 20 [2023-12-19 18:02:27,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117580134] [2023-12-19 18:02:27,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:02:27,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 18:02:27,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:27,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 18:02:27,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-12-19 18:02:27,263 INFO L87 Difference]: Start difference. First operand 95 states and 126 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 18:02:27,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:27,308 INFO L93 Difference]: Finished difference Result 95 states and 126 transitions. [2023-12-19 18:02:27,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 18:02:27,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 145 [2023-12-19 18:02:27,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:27,309 INFO L225 Difference]: With dead ends: 95 [2023-12-19 18:02:27,309 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 18:02:27,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-19 18:02:27,310 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:27,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 55 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:02:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 18:02:27,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 18:02:27,311 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) [2023-12-19 18:02:27,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 18:02:27,311 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 145 [2023-12-19 18:02:27,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:27,312 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 18:02:27,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 18:02:27,312 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 18:02:27,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 18:02:27,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 18:02:27,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 18:02:27,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:27,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 18:02:27,834 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-19 18:02:27,835 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-12-19 18:02:27,835 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~j~0#1| 4) (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| (+ 3 |ULTIMATE.start_main_~j~0#1|)) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~i~0#1|)) [2023-12-19 18:02:27,835 INFO L895 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~j~0#1| 4) (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| (+ 3 |ULTIMATE.start_main_~j~0#1|)) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~i~0#1|)) [2023-12-19 18:02:27,835 INFO L895 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~j~0#1| 4) (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| (+ 3 |ULTIMATE.start_main_~j~0#1|)) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~i~0#1|)) [2023-12-19 18:02:27,835 INFO L895 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~j~0#1| 4) (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| (+ 3 |ULTIMATE.start_main_~j~0#1|)) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~i~0#1|)) [2023-12-19 18:02:27,835 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-19 18:02:27,836 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~j~0#1| 4) (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| (+ 3 |ULTIMATE.start_main_~j~0#1|)) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~i~0#1|)) [2023-12-19 18:02:27,836 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~j~0#1| 4) (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| (+ 3 |ULTIMATE.start_main_~j~0#1|)) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~i~0#1|)) [2023-12-19 18:02:27,836 INFO L895 garLoopResultBuilder]: At program point L24(lines 18 25) the Hoare annotation is: (or (and (<= |ULTIMATE.start_main_~i~0#1| 3) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~j~0#1| 0)) (and (<= |ULTIMATE.start_main_~j~0#1| 4) (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| (+ 3 |ULTIMATE.start_main_~j~0#1|)) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~i~0#1|))) [2023-12-19 18:02:27,836 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~j~0#1| 4) (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| (+ 3 |ULTIMATE.start_main_~j~0#1|)) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~i~0#1|)) [2023-12-19 18:02:27,836 INFO L895 garLoopResultBuilder]: At program point L18-2(lines 18 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~j~0#1| 4) (<= 1 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| (+ 3 |ULTIMATE.start_main_~j~0#1|)) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~i~0#1|)) [2023-12-19 18:02:27,836 INFO L895 garLoopResultBuilder]: At program point L16-2(lines 16 31) the Hoare annotation is: (< 0 (+ |ULTIMATE.start_main_~i~0#1| 1)) [2023-12-19 18:02:27,836 INFO L899 garLoopResultBuilder]: For program point L16-3(lines 16 31) no Hoare annotation was computed. [2023-12-19 18:02:27,836 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2023-12-19 18:02:27,836 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2023-12-19 18:02:27,837 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2023-12-19 18:02:27,837 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2023-12-19 18:02:27,837 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true [2023-12-19 18:02:27,837 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-12-19 18:02:27,839 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1] [2023-12-19 18:02:27,841 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 18:02:27,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 06:02:27 BoogieIcfgContainer [2023-12-19 18:02:27,852 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 18:02:27,853 INFO L158 Benchmark]: Toolchain (without parser) took 5771.07ms. Allocated memory was 202.4MB in the beginning and 243.3MB in the end (delta: 40.9MB). Free memory was 157.9MB in the beginning and 151.7MB in the end (delta: 6.3MB). Peak memory consumption was 48.0MB. Max. memory is 8.0GB. [2023-12-19 18:02:27,853 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 202.4MB. Free memory is still 160.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 18:02:27,853 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.88ms. Allocated memory is still 202.4MB. Free memory was 157.6MB in the beginning and 147.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 18:02:27,853 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.11ms. Allocated memory is still 202.4MB. Free memory was 147.1MB in the beginning and 145.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 18:02:27,853 INFO L158 Benchmark]: Boogie Preprocessor took 23.09ms. Allocated memory is still 202.4MB. Free memory was 145.7MB in the beginning and 144.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 18:02:27,854 INFO L158 Benchmark]: RCFGBuilder took 222.47ms. Allocated memory is still 202.4MB. Free memory was 144.0MB in the beginning and 133.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 18:02:27,854 INFO L158 Benchmark]: TraceAbstraction took 5296.94ms. Allocated memory was 202.4MB in the beginning and 243.3MB in the end (delta: 40.9MB). Free memory was 133.1MB in the beginning and 151.7MB in the end (delta: -18.5MB). Peak memory consumption was 23.9MB. Max. memory is 8.0GB. [2023-12-19 18:02:27,856 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 202.4MB. Free memory is still 160.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.88ms. Allocated memory is still 202.4MB. Free memory was 157.6MB in the beginning and 147.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.11ms. Allocated memory is still 202.4MB. Free memory was 147.1MB in the beginning and 145.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.09ms. Allocated memory is still 202.4MB. Free memory was 145.7MB in the beginning and 144.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 222.47ms. Allocated memory is still 202.4MB. Free memory was 144.0MB in the beginning and 133.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 5296.94ms. Allocated memory was 202.4MB in the beginning and 243.3MB in the end (delta: 40.9MB). Free memory was 133.1MB in the beginning and 151.7MB in the end (delta: -18.5MB). Peak memory consumption was 23.9MB. 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: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 10, TraceHistogramMax: 27, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 769 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 558 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 414 IncrementalHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 211 mSDtfsCounter, 414 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1073 GetRequests, 980 SyntacticMatches, 5 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=9, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 83 PreInvPairs, 134 NumberOfFragments, 152 HoareAnnotationTreeSize, 83 FormulaSimplifications, 473 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FormulaSimplificationsInter, 540 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1038 NumberOfCodeBlocks, 933 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1362 ConstructedInterpolants, 0 QuantifiedInterpolants, 2210 SizeOfPredicates, 5 NumberOfNonLiveVariables, 764 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 10045/10307 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 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (0 < (i + 1)) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((i <= 3) && (0 <= i)) && (j == 0)) || ((((j <= 4) && (1 <= j)) && (i <= (3 + j))) && (j <= i))) RESULT: Ultimate proved your program to be correct! [2023-12-19 18:02:27,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...