/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:54:38,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:54:38,159 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 19:54:38,164 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:54:38,164 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:54:38,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:54:38,193 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:54:38,194 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:54:38,194 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:54:38,197 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:54:38,197 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:54:38,198 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:54:38,198 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:54:38,199 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:54:38,199 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:54:38,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:54:38,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:54:38,200 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:54:38,200 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:54:38,201 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:54:38,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:54:38,202 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:54:38,202 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:54:38,202 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:54:38,202 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:54:38,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:54:38,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:54:38,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:54:38,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:54:38,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:54:38,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:54:38,204 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:54:38,204 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:54:38,204 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:54:38,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:54:38,204 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:54:38,205 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:54:38,205 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:54:38,205 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:54:38,205 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:54:38,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:54:38,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:54:38,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:54:38,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:54:38,482 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:54:38,482 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:54:38,483 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2023-12-16 19:54:39,729 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:54:39,914 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:54:39,914 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2023-12-16 19:54:39,934 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad0752a80/72b7b89ea4284b98b327da56abe0e790/FLAGfcdf6c84d [2023-12-16 19:54:39,946 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad0752a80/72b7b89ea4284b98b327da56abe0e790 [2023-12-16 19:54:39,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:54:39,950 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:54:39,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:54:39,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:54:39,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:54:39,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:54:39" (1/1) ... [2023-12-16 19:54:39,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5a210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:39, skipping insertion in model container [2023-12-16 19:54:39,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:54:39" (1/1) ... [2023-12-16 19:54:39,993 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:54:40,117 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1253,1266] [2023-12-16 19:54:40,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:54:40,210 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:54:40,221 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1253,1266] [2023-12-16 19:54:40,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:54:40,279 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:54:40,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:40 WrapperNode [2023-12-16 19:54:40,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:54:40,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:54:40,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:54:40,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:54:40,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:40" (1/1) ... [2023-12-16 19:54:40,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:40" (1/1) ... [2023-12-16 19:54:40,380 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 745 [2023-12-16 19:54:40,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:54:40,381 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:54:40,381 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:54:40,381 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:54:40,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:40" (1/1) ... [2023-12-16 19:54:40,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:40" (1/1) ... [2023-12-16 19:54:40,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:40" (1/1) ... [2023-12-16 19:54:40,440 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]. [2023-12-16 19:54:40,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:40" (1/1) ... [2023-12-16 19:54:40,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:40" (1/1) ... [2023-12-16 19:54:40,468 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:40" (1/1) ... [2023-12-16 19:54:40,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:40" (1/1) ... [2023-12-16 19:54:40,482 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:40" (1/1) ... [2023-12-16 19:54:40,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:40" (1/1) ... [2023-12-16 19:54:40,514 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:54:40,514 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:54:40,514 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:54:40,515 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:54:40,515 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:40" (1/1) ... [2023-12-16 19:54:40,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:54:40,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:54:40,580 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) [2023-12-16 19:54:40,623 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 [2023-12-16 19:54:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:54:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:54:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:54:40,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:54:40,762 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:54:40,764 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:54:41,422 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:54:41,460 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:54:41,461 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:54:41,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:54:41 BoogieIcfgContainer [2023-12-16 19:54:41,462 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:54:41,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:54:41,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:54:41,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:54:41,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:54:39" (1/3) ... [2023-12-16 19:54:41,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1c0135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:54:41, skipping insertion in model container [2023-12-16 19:54:41,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:40" (2/3) ... [2023-12-16 19:54:41,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1c0135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:54:41, skipping insertion in model container [2023-12-16 19:54:41,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:54:41" (3/3) ... [2023-12-16 19:54:41,470 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_ball2004_1.c [2023-12-16 19:54:41,483 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:54:41,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:54:41,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:54:41,530 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;@23c84fe8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:54:41,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:54:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 144 states have (on average 1.6666666666666667) internal successors, (240), 145 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:41,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 19:54:41,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:41,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:41,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:41,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:41,545 INFO L85 PathProgramCache]: Analyzing trace with hash -351371405, now seen corresponding path program 1 times [2023-12-16 19:54:41,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:41,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479917714] [2023-12-16 19:54:41,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:41,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:42,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:42,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479917714] [2023-12-16 19:54:42,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479917714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:42,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:42,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:42,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069144607] [2023-12-16 19:54:42,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:42,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:54:42,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:42,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:54:42,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:54:42,076 INFO L87 Difference]: Start difference. First operand has 146 states, 144 states have (on average 1.6666666666666667) internal successors, (240), 145 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:42,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:42,145 INFO L93 Difference]: Finished difference Result 264 states and 436 transitions. [2023-12-16 19:54:42,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:54:42,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-16 19:54:42,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:42,159 INFO L225 Difference]: With dead ends: 264 [2023-12-16 19:54:42,159 INFO L226 Difference]: Without dead ends: 146 [2023-12-16 19:54:42,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:54:42,165 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:42,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 694 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:54:42,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-16 19:54:42,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-12-16 19:54:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.6413793103448275) internal successors, (238), 145 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:42,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 238 transitions. [2023-12-16 19:54:42,231 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 238 transitions. Word has length 26 [2023-12-16 19:54:42,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:42,231 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 238 transitions. [2023-12-16 19:54:42,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:42,232 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 238 transitions. [2023-12-16 19:54:42,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 19:54:42,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:42,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:42,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:54:42,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:42,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:42,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1994113413, now seen corresponding path program 1 times [2023-12-16 19:54:42,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:42,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224720542] [2023-12-16 19:54:42,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:42,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:42,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:42,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224720542] [2023-12-16 19:54:42,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224720542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:42,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:42,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:42,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406588601] [2023-12-16 19:54:42,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:42,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:54:42,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:42,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:54:42,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:54:42,425 INFO L87 Difference]: Start difference. First operand 146 states and 238 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:42,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:42,453 INFO L93 Difference]: Finished difference Result 267 states and 434 transitions. [2023-12-16 19:54:42,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:54:42,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-16 19:54:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:42,455 INFO L225 Difference]: With dead ends: 267 [2023-12-16 19:54:42,455 INFO L226 Difference]: Without dead ends: 149 [2023-12-16 19:54:42,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:54:42,457 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:42,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 692 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:54:42,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-16 19:54:42,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2023-12-16 19:54:42,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.6326530612244898) internal successors, (240), 147 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:42,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 240 transitions. [2023-12-16 19:54:42,466 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 240 transitions. Word has length 27 [2023-12-16 19:54:42,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:42,467 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 240 transitions. [2023-12-16 19:54:42,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:42,467 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 240 transitions. [2023-12-16 19:54:42,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 19:54:42,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:42,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:42,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:54:42,471 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:42,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:42,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1042418609, now seen corresponding path program 1 times [2023-12-16 19:54:42,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:42,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66673901] [2023-12-16 19:54:42,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:42,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:42,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:42,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66673901] [2023-12-16 19:54:42,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66673901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:42,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:42,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:42,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355217533] [2023-12-16 19:54:42,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:42,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:54:42,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:42,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:54:42,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:54:42,621 INFO L87 Difference]: Start difference. First operand 148 states and 240 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:42,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:42,691 INFO L93 Difference]: Finished difference Result 381 states and 618 transitions. [2023-12-16 19:54:42,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:54:42,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-16 19:54:42,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:42,695 INFO L225 Difference]: With dead ends: 381 [2023-12-16 19:54:42,695 INFO L226 Difference]: Without dead ends: 261 [2023-12-16 19:54:42,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:54:42,701 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 763 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 678 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 [2023-12-16 19:54:42,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 678 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:54:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-16 19:54:42,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 150. [2023-12-16 19:54:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.6241610738255035) internal successors, (242), 149 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 242 transitions. [2023-12-16 19:54:42,718 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 242 transitions. Word has length 28 [2023-12-16 19:54:42,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:42,718 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 242 transitions. [2023-12-16 19:54:42,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:42,718 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 242 transitions. [2023-12-16 19:54:42,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-16 19:54:42,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:42,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:42,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:54:42,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:42,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:42,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1443627800, now seen corresponding path program 1 times [2023-12-16 19:54:42,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:42,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563888302] [2023-12-16 19:54:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:42,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:43,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:43,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563888302] [2023-12-16 19:54:43,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563888302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:43,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:43,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:43,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135172831] [2023-12-16 19:54:43,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:43,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:54:43,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:43,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:54:43,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:54:43,507 INFO L87 Difference]: Start difference. First operand 150 states and 242 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:43,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:43,584 INFO L93 Difference]: Finished difference Result 407 states and 655 transitions. [2023-12-16 19:54:43,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:54:43,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-16 19:54:43,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:43,586 INFO L225 Difference]: With dead ends: 407 [2023-12-16 19:54:43,586 INFO L226 Difference]: Without dead ends: 287 [2023-12-16 19:54:43,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:54:43,588 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 785 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:43,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 701 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:54:43,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-16 19:54:43,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 169. [2023-12-16 19:54:43,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.6011904761904763) internal successors, (269), 168 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:43,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 269 transitions. [2023-12-16 19:54:43,596 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 269 transitions. Word has length 105 [2023-12-16 19:54:43,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:43,597 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 269 transitions. [2023-12-16 19:54:43,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:43,597 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 269 transitions. [2023-12-16 19:54:43,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-16 19:54:43,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:43,599 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:43,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 19:54:43,600 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:43,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:43,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1925800384, now seen corresponding path program 1 times [2023-12-16 19:54:43,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:43,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52978086] [2023-12-16 19:54:43,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:43,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:44,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:44,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52978086] [2023-12-16 19:54:44,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52978086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:44,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:44,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:44,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632112519] [2023-12-16 19:54:44,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:44,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:54:44,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:44,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:54:44,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:54:44,313 INFO L87 Difference]: Start difference. First operand 169 states and 269 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:44,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:44,423 INFO L93 Difference]: Finished difference Result 425 states and 683 transitions. [2023-12-16 19:54:44,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:54:44,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-16 19:54:44,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:44,425 INFO L225 Difference]: With dead ends: 425 [2023-12-16 19:54:44,426 INFO L226 Difference]: Without dead ends: 305 [2023-12-16 19:54:44,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:54:44,427 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 798 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:44,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 720 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:54:44,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-16 19:54:44,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 187. [2023-12-16 19:54:44,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.596774193548387) internal successors, (297), 186 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 297 transitions. [2023-12-16 19:54:44,440 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 297 transitions. Word has length 106 [2023-12-16 19:54:44,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:44,441 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 297 transitions. [2023-12-16 19:54:44,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:44,441 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 297 transitions. [2023-12-16 19:54:44,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 19:54:44,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:44,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:44,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 19:54:44,447 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:44,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:44,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1215453436, now seen corresponding path program 1 times [2023-12-16 19:54:44,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:44,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361122325] [2023-12-16 19:54:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:44,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:45,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:45,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361122325] [2023-12-16 19:54:45,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361122325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:45,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:45,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:45,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817492327] [2023-12-16 19:54:45,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:45,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:54:45,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:45,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:54:45,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:54:45,243 INFO L87 Difference]: Start difference. First operand 187 states and 297 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:45,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:45,330 INFO L93 Difference]: Finished difference Result 467 states and 751 transitions. [2023-12-16 19:54:45,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:54:45,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-16 19:54:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:45,333 INFO L225 Difference]: With dead ends: 467 [2023-12-16 19:54:45,333 INFO L226 Difference]: Without dead ends: 347 [2023-12-16 19:54:45,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:54:45,334 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 838 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:45,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 784 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:54:45,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-16 19:54:45,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 228. [2023-12-16 19:54:45,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.60352422907489) internal successors, (364), 227 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:45,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 364 transitions. [2023-12-16 19:54:45,339 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 364 transitions. Word has length 107 [2023-12-16 19:54:45,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:45,339 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 364 transitions. [2023-12-16 19:54:45,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:45,340 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 364 transitions. [2023-12-16 19:54:45,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-16 19:54:45,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:45,341 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:45,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 19:54:45,341 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:45,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:45,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1825501998, now seen corresponding path program 1 times [2023-12-16 19:54:45,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:45,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764930182] [2023-12-16 19:54:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:45,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:45,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:45,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764930182] [2023-12-16 19:54:45,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764930182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:45,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:45,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:45,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902190245] [2023-12-16 19:54:45,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:45,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:54:45,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:45,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:54:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:54:45,952 INFO L87 Difference]: Start difference. First operand 228 states and 364 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:46,034 INFO L93 Difference]: Finished difference Result 466 states and 747 transitions. [2023-12-16 19:54:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:54:46,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-16 19:54:46,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:46,037 INFO L225 Difference]: With dead ends: 466 [2023-12-16 19:54:46,037 INFO L226 Difference]: Without dead ends: 332 [2023-12-16 19:54:46,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:54:46,039 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 820 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:46,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 760 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:54:46,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-16 19:54:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 228. [2023-12-16 19:54:46,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.5991189427312775) internal successors, (363), 227 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 363 transitions. [2023-12-16 19:54:46,045 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 363 transitions. Word has length 108 [2023-12-16 19:54:46,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:46,046 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 363 transitions. [2023-12-16 19:54:46,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:46,047 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 363 transitions. [2023-12-16 19:54:46,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-16 19:54:46,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:46,047 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:46,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 19:54:46,048 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:46,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:46,049 INFO L85 PathProgramCache]: Analyzing trace with hash 106821370, now seen corresponding path program 1 times [2023-12-16 19:54:46,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:46,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035489129] [2023-12-16 19:54:46,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:46,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:46,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:46,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:46,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035489129] [2023-12-16 19:54:46,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035489129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:46,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:46,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:54:46,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443465082] [2023-12-16 19:54:46,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:46,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:54:46,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:46,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:54:46,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:54:46,592 INFO L87 Difference]: Start difference. First operand 228 states and 363 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:46,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:46,731 INFO L93 Difference]: Finished difference Result 501 states and 805 transitions. [2023-12-16 19:54:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:54:46,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-16 19:54:46,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:46,733 INFO L225 Difference]: With dead ends: 501 [2023-12-16 19:54:46,733 INFO L226 Difference]: Without dead ends: 381 [2023-12-16 19:54:46,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-16 19:54:46,734 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 761 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:46,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1297 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:54:46,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-12-16 19:54:46,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 231. [2023-12-16 19:54:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.5956521739130434) internal successors, (367), 230 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:46,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 367 transitions. [2023-12-16 19:54:46,743 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 367 transitions. Word has length 109 [2023-12-16 19:54:46,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:46,744 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 367 transitions. [2023-12-16 19:54:46,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:46,744 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 367 transitions. [2023-12-16 19:54:46,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-16 19:54:46,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:46,746 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:46,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 19:54:46,746 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:46,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:46,747 INFO L85 PathProgramCache]: Analyzing trace with hash 808421244, now seen corresponding path program 1 times [2023-12-16 19:54:46,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:46,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316546577] [2023-12-16 19:54:46,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:46,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:47,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:47,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316546577] [2023-12-16 19:54:47,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316546577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:47,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:47,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:47,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122396315] [2023-12-16 19:54:47,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:47,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:54:47,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:47,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:54:47,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:54:47,297 INFO L87 Difference]: Start difference. First operand 231 states and 367 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:47,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:47,387 INFO L93 Difference]: Finished difference Result 484 states and 776 transitions. [2023-12-16 19:54:47,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:54:47,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-16 19:54:47,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:47,389 INFO L225 Difference]: With dead ends: 484 [2023-12-16 19:54:47,389 INFO L226 Difference]: Without dead ends: 364 [2023-12-16 19:54:47,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:54:47,390 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 847 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:47,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 806 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:54:47,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-12-16 19:54:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 245. [2023-12-16 19:54:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.5942622950819672) internal successors, (389), 244 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 389 transitions. [2023-12-16 19:54:47,408 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 389 transitions. Word has length 109 [2023-12-16 19:54:47,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:47,409 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 389 transitions. [2023-12-16 19:54:47,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:47,409 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 389 transitions. [2023-12-16 19:54:47,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 19:54:47,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:47,410 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:47,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 19:54:47,410 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:47,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:47,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1293498064, now seen corresponding path program 1 times [2023-12-16 19:54:47,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:47,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913185521] [2023-12-16 19:54:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:47,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:48,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:48,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913185521] [2023-12-16 19:54:48,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913185521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:48,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:48,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:54:48,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9812678] [2023-12-16 19:54:48,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:48,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:54:48,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:48,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:54:48,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:54:48,162 INFO L87 Difference]: Start difference. First operand 245 states and 389 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:48,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:48,298 INFO L93 Difference]: Finished difference Result 503 states and 806 transitions. [2023-12-16 19:54:48,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:54:48,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-12-16 19:54:48,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:48,300 INFO L225 Difference]: With dead ends: 503 [2023-12-16 19:54:48,300 INFO L226 Difference]: Without dead ends: 383 [2023-12-16 19:54:48,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-16 19:54:48,301 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 693 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:48,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1762 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:54:48,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-16 19:54:48,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 248. [2023-12-16 19:54:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.591093117408907) internal successors, (393), 247 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:48,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 393 transitions. [2023-12-16 19:54:48,310 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 393 transitions. Word has length 110 [2023-12-16 19:54:48,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:48,310 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 393 transitions. [2023-12-16 19:54:48,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:48,310 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 393 transitions. [2023-12-16 19:54:48,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 19:54:48,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:48,311 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:48,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 19:54:48,311 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:48,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:48,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1716199890, now seen corresponding path program 1 times [2023-12-16 19:54:48,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:48,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735182907] [2023-12-16 19:54:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:48,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:48,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:48,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735182907] [2023-12-16 19:54:48,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735182907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:48,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:48,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:54:48,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729306318] [2023-12-16 19:54:48,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:48,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:54:48,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:48,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:54:48,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:54:48,894 INFO L87 Difference]: Start difference. First operand 248 states and 393 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:48,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:48,973 INFO L93 Difference]: Finished difference Result 490 states and 779 transitions. [2023-12-16 19:54:48,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:54:48,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-12-16 19:54:48,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:48,975 INFO L225 Difference]: With dead ends: 490 [2023-12-16 19:54:48,975 INFO L226 Difference]: Without dead ends: 336 [2023-12-16 19:54:48,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:54:48,976 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 998 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:48,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 761 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:54:48,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-12-16 19:54:48,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 248. [2023-12-16 19:54:48,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.5870445344129556) internal successors, (392), 247 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 392 transitions. [2023-12-16 19:54:48,984 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 392 transitions. Word has length 110 [2023-12-16 19:54:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:48,984 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 392 transitions. [2023-12-16 19:54:48,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 392 transitions. [2023-12-16 19:54:48,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 19:54:48,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:48,985 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:48,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 19:54:48,985 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:48,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:48,986 INFO L85 PathProgramCache]: Analyzing trace with hash 818806612, now seen corresponding path program 1 times [2023-12-16 19:54:48,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:48,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484239018] [2023-12-16 19:54:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:48,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:50,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 19:54:50,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:50,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484239018] [2023-12-16 19:54:50,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484239018] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:54:50,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783350764] [2023-12-16 19:54:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:50,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:54:50,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:54:50,098 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) [2023-12-16 19:54:50,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 19:54:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:50,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-16 19:54:50,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:54:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:50,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:54:51,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:51,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783350764] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:54:51,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:54:51,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 13] total 30 [2023-12-16 19:54:51,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124742566] [2023-12-16 19:54:51,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:54:51,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-16 19:54:51,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:51,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-16 19:54:51,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2023-12-16 19:54:51,586 INFO L87 Difference]: Start difference. First operand 248 states and 392 transitions. Second operand has 31 states, 31 states have (on average 10.32258064516129) internal successors, (320), 30 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:52,531 INFO L93 Difference]: Finished difference Result 1104 states and 1761 transitions. [2023-12-16 19:54:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 19:54:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.32258064516129) internal successors, (320), 30 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-12-16 19:54:52,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:52,537 INFO L225 Difference]: With dead ends: 1104 [2023-12-16 19:54:52,537 INFO L226 Difference]: Without dead ends: 896 [2023-12-16 19:54:52,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=490, Invalid=2060, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 19:54:52,539 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 6996 mSDsluCounter, 3765 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6996 SdHoareTripleChecker+Valid, 3959 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:52,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6996 Valid, 3959 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 19:54:52,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2023-12-16 19:54:52,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 450. [2023-12-16 19:54:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.5835189309576838) internal successors, (711), 449 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 711 transitions. [2023-12-16 19:54:52,550 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 711 transitions. Word has length 110 [2023-12-16 19:54:52,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:52,550 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 711 transitions. [2023-12-16 19:54:52,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.32258064516129) internal successors, (320), 30 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 711 transitions. [2023-12-16 19:54:52,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-16 19:54:52,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:52,551 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:52,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 19:54:52,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 19:54:52,758 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:52,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:52,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1685045856, now seen corresponding path program 1 times [2023-12-16 19:54:52,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:52,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705343750] [2023-12-16 19:54:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:52,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:52,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:52,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:52,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705343750] [2023-12-16 19:54:52,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705343750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:52,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:52,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:54:52,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501200419] [2023-12-16 19:54:52,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:52,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:54:52,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:52,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:54:52,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:54:52,992 INFO L87 Difference]: Start difference. First operand 450 states and 711 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:53,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:53,040 INFO L93 Difference]: Finished difference Result 717 states and 1127 transitions. [2023-12-16 19:54:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:54:53,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-16 19:54:53,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:53,042 INFO L225 Difference]: With dead ends: 717 [2023-12-16 19:54:53,042 INFO L226 Difference]: Without dead ends: 507 [2023-12-16 19:54:53,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:54:53,044 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 749 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:53,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 688 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:54:53,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2023-12-16 19:54:53,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 448. [2023-12-16 19:54:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.5794183445190157) internal successors, (706), 447 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:53,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 706 transitions. [2023-12-16 19:54:53,053 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 706 transitions. Word has length 111 [2023-12-16 19:54:53,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:53,054 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 706 transitions. [2023-12-16 19:54:53,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:53,054 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 706 transitions. [2023-12-16 19:54:53,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-16 19:54:53,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:53,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:53,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 19:54:53,055 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:53,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:53,056 INFO L85 PathProgramCache]: Analyzing trace with hash -2056728442, now seen corresponding path program 1 times [2023-12-16 19:54:53,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:53,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735161796] [2023-12-16 19:54:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:53,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:53,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735161796] [2023-12-16 19:54:53,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735161796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:54:53,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:54:53,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:54:53,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400559928] [2023-12-16 19:54:53,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:54:53,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:54:53,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:53,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:54:53,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:54:53,294 INFO L87 Difference]: Start difference. First operand 448 states and 706 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:53,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:54:53,351 INFO L93 Difference]: Finished difference Result 591 states and 933 transitions. [2023-12-16 19:54:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:54:53,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-16 19:54:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:54:53,353 INFO L225 Difference]: With dead ends: 591 [2023-12-16 19:54:53,353 INFO L226 Difference]: Without dead ends: 380 [2023-12-16 19:54:53,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:54:53,353 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 721 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:54:53,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 910 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:54:53,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-16 19:54:53,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 357. [2023-12-16 19:54:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.5870786516853932) internal successors, (565), 356 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 565 transitions. [2023-12-16 19:54:53,361 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 565 transitions. Word has length 111 [2023-12-16 19:54:53,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:54:53,361 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 565 transitions. [2023-12-16 19:54:53,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:54:53,361 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 565 transitions. [2023-12-16 19:54:53,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-16 19:54:53,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:54:53,362 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:54:53,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 19:54:53,363 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:54:53,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:54:53,363 INFO L85 PathProgramCache]: Analyzing trace with hash -365117743, now seen corresponding path program 1 times [2023-12-16 19:54:53,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:54:53,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445326683] [2023-12-16 19:54:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:53,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:54:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 43 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:55,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:54:55,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445326683] [2023-12-16 19:54:55,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445326683] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:54:55,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876403356] [2023-12-16 19:54:55,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:54:55,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:54:55,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:54:55,777 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) [2023-12-16 19:54:55,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 19:54:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:54:56,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 116 conjunts are in the unsatisfiable core [2023-12-16 19:54:56,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:54:57,138 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 23 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:57,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:54:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 23 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:54:58,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876403356] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:54:58,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:54:58,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 12] total 35 [2023-12-16 19:54:58,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328210542] [2023-12-16 19:54:58,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:54:58,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-16 19:54:58,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:54:58,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-16 19:54:58,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1119, Unknown=0, NotChecked=0, Total=1260 [2023-12-16 19:54:58,401 INFO L87 Difference]: Start difference. First operand 357 states and 565 transitions. Second operand has 36 states, 36 states have (on average 15.027777777777779) internal successors, (541), 35 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:02,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:02,086 INFO L93 Difference]: Finished difference Result 2235 states and 3578 transitions. [2023-12-16 19:55:02,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-16 19:55:02,086 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 15.027777777777779) internal successors, (541), 35 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2023-12-16 19:55:02,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:02,093 INFO L225 Difference]: With dead ends: 2235 [2023-12-16 19:55:02,093 INFO L226 Difference]: Without dead ends: 1940 [2023-12-16 19:55:02,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 351 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2350 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1225, Invalid=7517, Unknown=0, NotChecked=0, Total=8742 [2023-12-16 19:55:02,096 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 9072 mSDsluCounter, 6342 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9072 SdHoareTripleChecker+Valid, 6740 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:02,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9072 Valid, 6740 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1896 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 19:55:02,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2023-12-16 19:55:02,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1117. [2023-12-16 19:55:02,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 1.57078853046595) internal successors, (1753), 1116 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:02,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1753 transitions. [2023-12-16 19:55:02,125 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1753 transitions. Word has length 188 [2023-12-16 19:55:02,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:02,126 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1753 transitions. [2023-12-16 19:55:02,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 15.027777777777779) internal successors, (541), 35 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:02,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1753 transitions. [2023-12-16 19:55:02,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-16 19:55:02,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:02,129 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:02,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 19:55:02,338 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,SelfDestructingSolverStorable14 [2023-12-16 19:55:02,338 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:02,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:02,339 INFO L85 PathProgramCache]: Analyzing trace with hash 153469965, now seen corresponding path program 1 times [2023-12-16 19:55:02,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:02,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116875805] [2023-12-16 19:55:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:02,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 34 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:04,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:04,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116875805] [2023-12-16 19:55:04,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116875805] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:55:04,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739268048] [2023-12-16 19:55:04,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:04,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:04,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:55:04,769 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) [2023-12-16 19:55:04,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 19:55:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:05,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-16 19:55:05,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:55:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-16 19:55:05,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:55:05,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739268048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:05,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:55:05,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2023-12-16 19:55:05,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363422274] [2023-12-16 19:55:05,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:05,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:55:05,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:05,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:55:05,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-12-16 19:55:05,249 INFO L87 Difference]: Start difference. First operand 1117 states and 1753 transitions. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:05,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:05,514 INFO L93 Difference]: Finished difference Result 2131 states and 3387 transitions. [2023-12-16 19:55:05,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 19:55:05,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2023-12-16 19:55:05,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:05,520 INFO L225 Difference]: With dead ends: 2131 [2023-12-16 19:55:05,520 INFO L226 Difference]: Without dead ends: 1736 [2023-12-16 19:55:05,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 190 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-12-16 19:55:05,522 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 422 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:05,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1617 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:55:05,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2023-12-16 19:55:05,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1177. [2023-12-16 19:55:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 1.5654761904761905) internal successors, (1841), 1176 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1841 transitions. [2023-12-16 19:55:05,548 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1841 transitions. Word has length 190 [2023-12-16 19:55:05,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:05,548 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1841 transitions. [2023-12-16 19:55:05,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:05,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1841 transitions. [2023-12-16 19:55:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-16 19:55:05,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:05,551 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:05,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 19:55:05,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:05,758 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:05,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:05,759 INFO L85 PathProgramCache]: Analyzing trace with hash -439389237, now seen corresponding path program 1 times [2023-12-16 19:55:05,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:05,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74557663] [2023-12-16 19:55:05,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:05,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-16 19:55:06,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:06,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74557663] [2023-12-16 19:55:06,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74557663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:06,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:55:06,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 19:55:06,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380688035] [2023-12-16 19:55:06,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:06,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:55:06,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:55:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:55:06,670 INFO L87 Difference]: Start difference. First operand 1177 states and 1841 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:06,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:06,761 INFO L93 Difference]: Finished difference Result 3881 states and 6077 transitions. [2023-12-16 19:55:06,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:55:06,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2023-12-16 19:55:06,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:06,773 INFO L225 Difference]: With dead ends: 3881 [2023-12-16 19:55:06,773 INFO L226 Difference]: Without dead ends: 3148 [2023-12-16 19:55:06,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:55:06,778 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 739 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:06,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1316 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:55:06,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2023-12-16 19:55:06,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 1195. [2023-12-16 19:55:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 1.559463986599665) internal successors, (1862), 1194 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:06,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1862 transitions. [2023-12-16 19:55:06,817 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1862 transitions. Word has length 190 [2023-12-16 19:55:06,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:06,817 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1862 transitions. [2023-12-16 19:55:06,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:06,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1862 transitions. [2023-12-16 19:55:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-16 19:55:06,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:06,820 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:06,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 19:55:06,820 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:06,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:06,821 INFO L85 PathProgramCache]: Analyzing trace with hash -50789091, now seen corresponding path program 1 times [2023-12-16 19:55:06,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:06,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513196574] [2023-12-16 19:55:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:06,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 19:55:08,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:08,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513196574] [2023-12-16 19:55:08,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513196574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:08,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:55:08,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 19:55:08,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554401616] [2023-12-16 19:55:08,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:08,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:55:08,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:08,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:55:08,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:55:08,381 INFO L87 Difference]: Start difference. First operand 1195 states and 1862 transitions. Second operand has 7 states, 7 states have (on average 26.428571428571427) internal successors, (185), 7 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:08,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:08,632 INFO L93 Difference]: Finished difference Result 3201 states and 5041 transitions. [2023-12-16 19:55:08,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 19:55:08,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.428571428571427) internal successors, (185), 7 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-12-16 19:55:08,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:08,640 INFO L225 Difference]: With dead ends: 3201 [2023-12-16 19:55:08,640 INFO L226 Difference]: Without dead ends: 2782 [2023-12-16 19:55:08,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-12-16 19:55:08,641 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 899 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:08,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1602 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:55:08,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2023-12-16 19:55:08,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 1493. [2023-12-16 19:55:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1492 states have (on average 1.5636729222520107) internal successors, (2333), 1492 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:08,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2333 transitions. [2023-12-16 19:55:08,668 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2333 transitions. Word has length 191 [2023-12-16 19:55:08,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:08,669 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 2333 transitions. [2023-12-16 19:55:08,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.428571428571427) internal successors, (185), 7 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:08,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2333 transitions. [2023-12-16 19:55:08,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-16 19:55:08,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:08,671 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:08,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 19:55:08,671 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:08,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:08,672 INFO L85 PathProgramCache]: Analyzing trace with hash -653564733, now seen corresponding path program 1 times [2023-12-16 19:55:08,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:08,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642610645] [2023-12-16 19:55:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:08,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:10,203 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 43 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:10,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:10,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642610645] [2023-12-16 19:55:10,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642610645] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:55:10,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162442664] [2023-12-16 19:55:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:10,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:10,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:55:10,227 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) [2023-12-16 19:55:10,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 19:55:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:10,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-16 19:55:10,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:55:10,770 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 19:55:10,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:55:10,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162442664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:10,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:55:10,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 19 [2023-12-16 19:55:10,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275401148] [2023-12-16 19:55:10,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:10,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 19:55:10,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:10,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 19:55:10,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-12-16 19:55:10,772 INFO L87 Difference]: Start difference. First operand 1493 states and 2333 transitions. Second operand has 10 states, 10 states have (on average 18.5) internal successors, (185), 10 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:11,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:11,197 INFO L93 Difference]: Finished difference Result 2239 states and 3526 transitions. [2023-12-16 19:55:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 19:55:11,197 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.5) internal successors, (185), 10 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-12-16 19:55:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:11,220 INFO L225 Difference]: With dead ends: 2239 [2023-12-16 19:55:11,220 INFO L226 Difference]: Without dead ends: 1866 [2023-12-16 19:55:11,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2023-12-16 19:55:11,222 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 722 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:11,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 2656 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:55:11,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2023-12-16 19:55:11,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1559. [2023-12-16 19:55:11,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1558 states have (on average 1.5629011553273426) internal successors, (2435), 1558 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:11,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2435 transitions. [2023-12-16 19:55:11,255 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2435 transitions. Word has length 191 [2023-12-16 19:55:11,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:11,256 INFO L495 AbstractCegarLoop]: Abstraction has 1559 states and 2435 transitions. [2023-12-16 19:55:11,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.5) internal successors, (185), 10 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:11,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2435 transitions. [2023-12-16 19:55:11,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-16 19:55:11,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:11,259 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:11,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 19:55:11,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:11,470 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:11,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:11,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1583197185, now seen corresponding path program 1 times [2023-12-16 19:55:11,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:11,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613905841] [2023-12-16 19:55:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:11,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 69 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:13,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:13,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613905841] [2023-12-16 19:55:13,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613905841] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:55:13,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127703372] [2023-12-16 19:55:13,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:13,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:13,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:55:13,206 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:55:13,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 19:55:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:13,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-16 19:55:13,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:55:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 79 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:13,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:55:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 79 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:14,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127703372] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:55:14,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:55:14,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13] total 33 [2023-12-16 19:55:14,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275162819] [2023-12-16 19:55:14,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:55:14,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-16 19:55:14,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:14,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-16 19:55:14,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 19:55:14,717 INFO L87 Difference]: Start difference. First operand 1559 states and 2435 transitions. Second operand has 34 states, 34 states have (on average 14.823529411764707) internal successors, (504), 33 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:16,929 INFO L93 Difference]: Finished difference Result 4087 states and 6375 transitions. [2023-12-16 19:55:16,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-16 19:55:16,930 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 14.823529411764707) internal successors, (504), 33 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-12-16 19:55:16,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:16,937 INFO L225 Difference]: With dead ends: 4087 [2023-12-16 19:55:16,937 INFO L226 Difference]: Without dead ends: 2593 [2023-12-16 19:55:16,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1303 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=904, Invalid=4646, Unknown=0, NotChecked=0, Total=5550 [2023-12-16 19:55:16,942 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 5096 mSDsluCounter, 5639 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5096 SdHoareTripleChecker+Valid, 5981 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:16,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5096 Valid, 5981 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 19:55:16,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2023-12-16 19:55:16,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 1457. [2023-12-16 19:55:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1456 states have (on average 1.54739010989011) internal successors, (2253), 1456 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2253 transitions. [2023-12-16 19:55:16,987 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2253 transitions. Word has length 191 [2023-12-16 19:55:16,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:16,987 INFO L495 AbstractCegarLoop]: Abstraction has 1457 states and 2253 transitions. [2023-12-16 19:55:16,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 14.823529411764707) internal successors, (504), 33 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2253 transitions. [2023-12-16 19:55:16,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-16 19:55:16,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:16,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:17,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 19:55:17,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:17,198 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:17,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:17,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1103973207, now seen corresponding path program 1 times [2023-12-16 19:55:17,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:17,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000831017] [2023-12-16 19:55:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:17,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:19,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:19,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000831017] [2023-12-16 19:55:19,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000831017] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:55:19,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748926061] [2023-12-16 19:55:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:19,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:19,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:55:19,446 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:55:19,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 19:55:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:19,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-16 19:55:19,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:55:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:20,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:55:21,237 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:21,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748926061] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:55:21,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:55:21,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 13] total 36 [2023-12-16 19:55:21,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383778868] [2023-12-16 19:55:21,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:55:21,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-16 19:55:21,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:21,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-16 19:55:21,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 19:55:21,240 INFO L87 Difference]: Start difference. First operand 1457 states and 2253 transitions. Second operand has 37 states, 37 states have (on average 14.054054054054054) internal successors, (520), 36 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:25,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:25,371 INFO L93 Difference]: Finished difference Result 4603 states and 7168 transitions. [2023-12-16 19:55:25,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-16 19:55:25,371 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 14.054054054054054) internal successors, (520), 36 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-12-16 19:55:25,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:25,380 INFO L225 Difference]: With dead ends: 4603 [2023-12-16 19:55:25,380 INFO L226 Difference]: Without dead ends: 3235 [2023-12-16 19:55:25,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 361 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1399, Invalid=5741, Unknown=0, NotChecked=0, Total=7140 [2023-12-16 19:55:25,384 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 5058 mSDsluCounter, 7723 mSDsCounter, 0 mSdLazyCounter, 2162 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5058 SdHoareTripleChecker+Valid, 8520 SdHoareTripleChecker+Invalid, 2188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:25,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5058 Valid, 8520 Invalid, 2188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2162 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 19:55:25,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2023-12-16 19:55:25,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 1593. [2023-12-16 19:55:25,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1592 states have (on average 1.5489949748743719) internal successors, (2466), 1592 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2466 transitions. [2023-12-16 19:55:25,421 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2466 transitions. Word has length 191 [2023-12-16 19:55:25,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:25,422 INFO L495 AbstractCegarLoop]: Abstraction has 1593 states and 2466 transitions. [2023-12-16 19:55:25,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 14.054054054054054) internal successors, (520), 36 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:55:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2466 transitions. [2023-12-16 19:55:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-16 19:55:25,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:25,425 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:25,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 19:55:25,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:25,642 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:25,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:25,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2040432783, now seen corresponding path program 1 times [2023-12-16 19:55:25,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:25,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847218554] [2023-12-16 19:55:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:25,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 84 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 19:55:27,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:27,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847218554] [2023-12-16 19:55:27,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847218554] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:55:27,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062502235] [2023-12-16 19:55:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:27,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:27,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:55:27,382 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:55:27,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 19:55:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:27,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 134 conjunts are in the unsatisfiable core [2023-12-16 19:55:27,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:55:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 41 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:28,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 19:55:29,906 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:55:29,913 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 19:55:29,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 19:55:29,949 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 19:55:30,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:55:30,114 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 193 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 43 known predicates. [2023-12-16 19:55:30,117 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:30,119 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:55:30,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:55:30 BoogieIcfgContainer [2023-12-16 19:55:30,121 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:55:30,121 INFO L158 Benchmark]: Toolchain (without parser) took 50171.21ms. Allocated memory was 343.9MB in the beginning and 1.3GB in the end (delta: 916.5MB). Free memory was 290.7MB in the beginning and 1.1GB in the end (delta: -781.1MB). Peak memory consumption was 136.8MB. Max. memory is 8.0GB. [2023-12-16 19:55:30,121 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 212.9MB. Free memory is still 161.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:55:30,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.01ms. Allocated memory is still 343.9MB. Free memory was 290.4MB in the beginning and 271.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-16 19:55:30,122 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.39ms. Allocated memory is still 343.9MB. Free memory was 271.5MB in the beginning and 301.5MB in the end (delta: -30.0MB). Peak memory consumption was 20.5MB. Max. memory is 8.0GB. [2023-12-16 19:55:30,122 INFO L158 Benchmark]: Boogie Preprocessor took 133.09ms. Allocated memory is still 343.9MB. Free memory was 301.5MB in the beginning and 292.6MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-16 19:55:30,122 INFO L158 Benchmark]: RCFGBuilder took 947.81ms. Allocated memory is still 343.9MB. Free memory was 292.6MB in the beginning and 214.0MB in the end (delta: 78.6MB). Peak memory consumption was 78.6MB. Max. memory is 8.0GB. [2023-12-16 19:55:30,122 INFO L158 Benchmark]: TraceAbstraction took 48657.11ms. Allocated memory was 343.9MB in the beginning and 1.3GB in the end (delta: 916.5MB). Free memory was 213.5MB in the beginning and 1.1GB in the end (delta: -858.4MB). Peak memory consumption was 58.6MB. Max. memory is 8.0GB. [2023-12-16 19:55:30,123 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 212.9MB. Free memory is still 161.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 328.01ms. Allocated memory is still 343.9MB. Free memory was 290.4MB in the beginning and 271.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 99.39ms. Allocated memory is still 343.9MB. Free memory was 271.5MB in the beginning and 301.5MB in the end (delta: -30.0MB). Peak memory consumption was 20.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 133.09ms. Allocated memory is still 343.9MB. Free memory was 301.5MB in the beginning and 292.6MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 947.81ms. Allocated memory is still 343.9MB. Free memory was 292.6MB in the beginning and 214.0MB in the end (delta: 78.6MB). Peak memory consumption was 78.6MB. Max. memory is 8.0GB. * TraceAbstraction took 48657.11ms. Allocated memory was 343.9MB in the beginning and 1.3GB in the end (delta: 916.5MB). Free memory was 213.5MB in the beginning and 1.1GB in the end (delta: -858.4MB). Peak memory consumption was 58.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 193 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 43 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 146 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.6s, OverallIterations: 22, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37779 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37779 mSDsluCounter, 43644 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36618 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7571 IncrementalHoareTripleChecker+Invalid, 7669 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 7026 mSDtfsCounter, 7571 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2118 GetRequests, 1676 SyntacticMatches, 6 SemanticMatches, 436 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5926 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1593occurred in iteration=21, InterpolantAutomatonStates: 294, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 21 MinimizatonAttempts, 9300 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 6.0s SatisfiabilityAnalysisTime, 21.6s InterpolantComputationTime, 3670 NumberOfCodeBlocks, 3670 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 4319 ConstructedInterpolants, 0 QuantifiedInterpolants, 31399 SizeOfPredicates, 138 NumberOfNonLiveVariables, 6995 ConjunctsInSsa, 367 ConjunctsInUnsatCore, 31 InterpolantComputations, 17 PerfectInterpolantSequences, 989/1426 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown